Can You Use a Co-Signer or Non-Occupant Co-Borrower for a Mortgage in Michigan? (2026)
Buying a home does not always mean qualifying for the mortgage entirely on your own.
Maybe your income is just a little short of what is needed to qualify for the home you want. Maybe you recently started your career and have strong future earning potential but not enough income today. Or perhaps a parent wants to help an adult child purchase their first home without actually living in the property.
In situations like these, adding another person to the mortgage may be an option.
But mortgage terminology can get confusing quickly.
Co-signer. Co-borrower. Non-occupant co-borrower.
People often use these terms interchangeably, but they do not necessarily mean the same thing. More importantly, adding another borrower to a mortgage creates real financial responsibility for that person.
Depending on the mortgage program and the circumstances, a qualified non-occupant borrower may be able to contribute income and financial strength to help the occupying borrower qualify. For example, Fannie Mae permits qualifying income from a non-occupant borrower when it meets the same income standards required for an occupying borrower.
That can be extremely useful.
It also doesn’t mean that simply finding someone with a good job and excellent credit automatically solves every mortgage qualification problem.
Let’s look at how it actually works.
What Is a Non-Occupant Co-Borrower?
A non-occupant co-borrower is someone who is a borrower on the mortgage but does not intend to live in the home as their primary residence.
A common example would be:
A parent helping an adult child purchase a home.
The child intends to live in the property.
The parent does not.
Both may be borrowers on the mortgage, and the parent’s qualifying income may potentially be considered when determining whether the borrowers qualify.
Under Fannie Mae’s current guidelines, a non-occupant borrower signs the mortgage note, has joint liability for the debt and may or may not have an ownership interest in the property.
That last part is important.
Being a borrower on someone else’s mortgage isn’t the same thing as simply providing a reference or saying, “I’ll help if they can’t make the payment.”
You’re legally taking responsibility for the mortgage debt.
What Is the Difference Between a Co-Signer and a Co-Borrower?
This is one of the first areas where borrowers get confused.
In everyday conversation, people often say:
“My dad is going to co-sign for me.”
What they may actually be describing is a non-occupant co-borrower.
Under Fannie Mae’s definitions, a co-signer or guarantor does not have an ownership interest in the property but signs the mortgage note and shares liability for the debt. A non-occupant borrower also signs the note and shares liability, but may or may not have an ownership interest in the property.
So there can be an important distinction between:
Occupying co-borrower:
Someone on the mortgage who will live in the home.
Non-occupant co-borrower:
Someone on the mortgage who will not live in the home.
Co-signer or guarantor:
Someone financially responsible for the mortgage but who generally does not have an ownership interest in the property.
The exact structure matters because different mortgage programs can have different rules.
For most homebuyers, the bigger question isn’t really what to call the person helping.
It’s:
Can their income and financial profile actually help me qualify?
Can a Non-Occupant Co-Borrower’s Income Help You Qualify?
Potentially, yes.
This is one of the primary reasons borrowers consider adding a non-occupant borrower.
Imagine a homebuyer earns $55,000 per year.
They have good credit, some savings and stable employment, but after considering the proposed mortgage payment and their existing monthly debts, their debt-to-income ratio for a mortgage is higher than the loan program allows.
Now suppose a parent with stable qualifying income agrees to become a non-occupant co-borrower.
Depending on the mortgage program and underwriting requirements, that parent’s income may be included in the qualification analysis.
That could potentially change the numbers significantly.
But there is another side to the equation.
The co-borrower’s debts generally matter too.
You don’t simply add someone’s income while ignoring their financial obligations.
If the person helping you has:
- A mortgage of their own
- Car payments
- Student loans
- Credit-card debt
- Personal loans
- Other recurring obligations
those liabilities may also need to be considered when determining qualification.
This is why adding a co-borrower with a high income doesn’t automatically improve a mortgage application.
We need to look at the entire financial picture.
How Debt-to-Income Ratio Works With a Co-Borrower
Your debt-to-income ratio, commonly called DTI, compares qualifying monthly debt obligations with qualifying monthly income.
For a simplified example, suppose an occupying borrower has:
Qualifying monthly income: $5,000
Total monthly obligations including the proposed housing payment: $2,600
That produces a DTI of approximately 52%.
Depending on the loan program, automated underwriting findings and the rest of the file, that could create a qualification problem.
Now suppose a parent is added as an eligible non-occupant co-borrower and has:
Qualifying monthly income: $6,000
Monthly debts: $1,500
The combined picture would look approximately like this:
Combined qualifying income: $11,000
Combined monthly obligations: $4,100
That would produce a combined DTI of approximately 37%.
The example is intentionally simplified—actual mortgage underwriting involves considerably more than dividing two numbers—but it demonstrates why a non-occupant co-borrower can sometimes make such a significant difference.
Their income can help.
But their liabilities come with them.
That’s why we don’t want to decide whether someone should be added to the loan until we’ve actually run the numbers.
Does a Co-Borrower Need Good Credit?
Credit matters for everyone applying for the mortgage.
Adding someone with excellent income but significant credit problems can create an entirely different underwriting issue.
Likewise, adding someone with excellent credit but very little qualifying income may not solve an income or DTI problem.
Mortgage qualification generally involves several pieces working together:
Income. Credit. Assets. Debts. Property. Loan program.
That’s also why someone who is trying to strengthen their mortgage application may want to understand how to improve their credit score before applying for a mortgage before assuming that adding another borrower is the only solution.
Sometimes the best answer is a co-borrower.
Sometimes it is a different mortgage program.
Sometimes paying off or restructuring a debt changes qualification.
And sometimes the borrower is closer to qualifying independently than they initially thought.
Do Non-Occupant Co-Borrowers Have to Be Related to You?
This depends on the mortgage program and specific transaction.
You should not assume that every mortgage program treats relationships the same way.
Conventional financing can provide considerable flexibility in certain non-occupant borrower situations. Freddie Mac, for example, states that it does not generally limit the number of borrowers on a mortgage or require borrowers to be related, although particular loan products can impose additional restrictions.
FHA financing has its own rules, particularly when the non-occupying borrower is or isn’t a family member.
This distinction can become especially important because the relationship between the borrowers may affect how much financing is available under FHA.
We’ll get into those differences in the next section.
Can Parents Help Their Children Qualify for a Mortgage?
Yes, and this is probably the most common real-world scenario we see when discussing non-occupant co-borrowers.
Imagine a first-time buyer who:
- Has established a career
- Has reasonable credit
- Has saved some money
- Can comfortably contribute toward the mortgage
- But doesn’t quite have enough qualifying income to purchase the home they’re considering
A parent may be willing to help.
There are several different ways parents sometimes assist with a home purchase.
They may provide gift funds toward the down payment or closing costs when permitted.
They may help reduce certain debts.
They may become a co-borrower.
Or a combination of strategies may be considered.
Those options aren’t interchangeable.
If the actual problem is insufficient cash to close, adding a parent’s income to the mortgage may not address the real issue.
If the problem is DTI, a gift of additional cash may not solve the qualification issue either.
The first step is identifying what is actually preventing the borrower from qualifying.
Then we can determine whether a non-occupant co-borrower is an appropriate solution.
A Co-Borrower Is Not Just “Helping You Get Approved”
This deserves its own section because it’s easy to underestimate.
If someone becomes jointly responsible for your mortgage, they aren’t simply lending you their credit score.
They are taking on a substantial financial obligation.
The mortgage may appear on their credit profile.
The payment history can affect them.
And the obligation may affect their ability to qualify for other financing in the future, although underwriting rules may sometimes allow an obligation to be treated differently when another party has been making the payments and applicable documentation requirements are satisfied.
So before a parent, family member or anyone else agrees to become a co-borrower, everyone should understand what that means.
This isn’t:
“Can Mom help me get approved?”
It’s:
“Does using Mom as a borrower make sense for both of us financially, and does the mortgage program allow the structure we’re considering?”
That’s a much better question.
FHA and Conventional Loans Don’t Treat Every Co-Borrower Situation the Same
This is where the subject gets particularly important.
A non-occupant co-borrower can potentially be used with both FHA loans and Conventional loans, but the guidelines aren’t identical.
The amount of financing available, the relationship between borrowers, the property, the underwriting method and other factors can affect what is allowed.
Even within Conventional financing, Fannie Mae and Freddie Mac guidelines aren’t identical in every circumstance. For example, Freddie Mac’s current general guidance for mortgages with a non-occupying borrower includes specific LTV limits depending on whether the loan receives an automated Accept result or is manually underwritten.
That means we shouldn’t start with:
“I need a co-signer.”
We should start with:
“Here’s my financial situation. What mortgage structures could allow me to qualify?”
Sometimes the answer will involve a non-occupant co-borrower.
Sometimes it won’t.
FHA Loans and Non-Occupant Co-Borrowers
FHA financing can be particularly useful when a family member wants to help someone qualify for a home.
A common example is a parent helping an adult child purchase their first house.
FHA allows certain non-occupying co-borrower arrangements, but there are important rules surrounding the relationship between the borrowers and the amount of financing available.
That means simply saying, “FHA allows co-signers” doesn’t tell the whole story.
The details matter.
Who Does FHA Consider a Family Member?
For FHA financing, the relationship between the occupying borrower and non-occupying borrower can make a significant difference.
HUD’s definition of a family member includes certain relationships by blood, marriage, adoption or law. This generally includes spouses, parents, children, siblings, grandparents, grandchildren, aunts, uncles, and certain in-law, step and foster relationships.
Why does this matter?
Because FHA can treat a transaction involving a family-member non-occupying borrower differently from one involving someone who isn’t considered family under FHA guidelines.
For example:
A father helping his daughter purchase her first home is different from a friend agreeing to become a non-occupying co-borrower.
Both situations may potentially be possible.
But they aren’t necessarily eligible for the same maximum financing.
How Much Can You Borrow With an FHA Non-Occupant Co-Borrower?
This is one of the most important FHA rules to understand.
When an FHA mortgage includes an eligible non-occupying co-borrower who is a family member, the transaction may potentially qualify for FHA’s maximum financing, assuming the borrowers and transaction otherwise meet FHA requirements.
That can potentially mean buying with FHA’s minimum required investment rather than making a large down payment.
However, when the non-occupying borrower is not a family member, FHA generally limits the mortgage to 75% loan-to-value.
In practical terms, that can mean approximately a 25% equity/down-payment requirement rather than the low-down-payment structure people normally associate with FHA.
There are exceptions and additional rules that can apply, so every transaction needs to be reviewed individually.
But this distinction illustrates why the relationship between borrowers matters so much.
If someone says:
“My friend will co-sign, so I’ll just use FHA with 3.5% down.”
We shouldn’t assume that’s going to work.
We need to determine exactly who the non-occupying borrower is and whether the proposed transaction satisfies FHA’s requirements.
Can You Use a Parent as an FHA Non-Occupant Co-Borrower?
Potentially, yes.
This is one of the scenarios where FHA can be particularly helpful.
Suppose a first-time buyer earns $48,000 per year and has:
- Good employment history
- Acceptable credit
- Some money saved
- Manageable consumer debt
- But not quite enough qualifying income for the proposed mortgage payment
A parent earns $90,000 per year, has acceptable credit and agrees to become a non-occupying co-borrower.
Depending on the complete financial picture, FHA may allow the parent’s qualifying income to be considered along with the occupying borrower’s income.
That could potentially bring the combined debt-to-income ratio within an acceptable range.
The parent doesn’t have to move into the home simply because they’re a borrower.
But they do become responsible for the mortgage.
That’s the tradeoff.
What If the Parent Already Owns a Home?
That’s extremely common.
A parent doesn’t necessarily have to sell their home simply because they’re helping a child qualify for another mortgage.
However, their existing financial obligations don’t disappear.
Suppose Dad has:
Gross qualifying income: $9,000 per month
But he also has:
- $2,000 monthly mortgage payment
- $550 vehicle payment
- $200 minimum credit-card payments
Those obligations may need to be included when determining the combined qualification.
This is why looking only at someone’s salary can be misleading.
Dad might make $108,000 per year, which sounds like a substantial amount of additional income.
But if he has substantial monthly obligations of his own, the benefit to the mortgage application could be much smaller than expected.
Again, we have to run the actual numbers.
Does FHA Combine Everyone’s Income and Debt?
Generally, the qualifying income and applicable liabilities of borrowers obligated on the mortgage are evaluated as part of the mortgage qualification.
This can be beneficial because the non-occupying co-borrower’s qualifying income may strengthen the file.
But it also means we’re evaluating their debts, credit and other relevant financial information.
Let’s use another simplified example.
The homebuyer has:
Monthly qualifying income: $4,500
Monthly debts including proposed housing: $2,400
The parent has:
Monthly qualifying income: $7,500
Monthly debts: $2,000
Together:
Combined income: $12,000
Combined obligations: $4,400
That creates a simplified combined DTI of approximately 36.7%.
Without the parent’s income, the occupying borrower would have been at approximately 53.3%.
That is a major difference.
Of course, actual FHA underwriting is more complex, and automated underwriting considers far more than one ratio.
But this demonstrates why non-occupant co-borrowers can be such a powerful qualification tool.
Can a Non-Occupant Co-Borrower Help With Bad Credit?
This is where borrowers sometimes misunderstand what a co-borrower can accomplish.
Adding someone with excellent credit does not simply erase another borrower’s credit history.
If the occupying borrower has:
- Recent late payments
- Collections
- Charge-offs
- Bankruptcy
- Foreclosure
- Significant delinquent debt
- Other serious credit issues
adding a parent with an 800 credit score doesn’t necessarily make those issues disappear.
Mortgage programs have borrower-level eligibility requirements.
The credit profiles of everyone involved still need to be evaluated.
If credit is the primary obstacle, the better strategy may be addressing the credit problem rather than assuming another borrower will fix it.
For borrowers rebuilding after a major credit event, understanding the rules for buying a home after bankruptcy in Michigan can also be important because required waiting periods and eligibility rules may still apply.
Conventional Loans and Non-Occupant Co-Borrowers
Conventional financing can also allow non-occupant borrowers.
This can provide another option when a buyer needs additional qualifying income but FHA isn’t necessarily the best mortgage for the transaction.
A Conventional mortgage may be attractive because of differences involving:
- Mortgage insurance
- Property requirements
- Loan limits
- Credit-based pricing
- Down-payment options
- Long-term mortgage costs
The fact that a borrower needs a non-occupant co-borrower doesn’t automatically mean FHA should be the first choice.
That’s why we’ve also written extensively about FHA vs. Conventional loans in Michigan.
We want to compare the entire mortgage structure.
Does a Conventional Non-Occupant Co-Borrower Have to Be a Family Member?
Not necessarily.
Conventional guidelines can provide more flexibility regarding the relationship between borrowers than FHA’s family-member rules.
That can make Conventional financing worth considering when the person helping isn’t a relative.
For example:
Maybe two people have been in a long-term relationship but aren’t married.
Maybe a close family friend wants to help.
Maybe another person has a legitimate financial interest in assisting the borrower.
The exact eligibility still depends on the applicable Conventional guidelines, underwriting and transaction structure.
But we don’t automatically rule out a Conventional mortgage simply because the non-occupying borrower isn’t a parent or other family member.
Does a Conventional Co-Borrower Need to Be on the Title?
This is another situation where terminology matters.
Being obligated on the mortgage note and having an ownership interest in the property are related issues, but they aren’t necessarily identical.
Depending on the loan structure and applicable guidelines, a non-occupant borrower may or may not have an ownership interest in the property.
This is something borrowers should understand before closing, particularly when parents are helping adult children.
Mortgage qualification is one issue.
Property ownership is another.
And there can potentially be legal, estate-planning and tax implications associated with ownership.
Those questions go beyond mortgage qualification and may warrant advice from the appropriate attorney or tax professional.
We can explain what the mortgage program requires.
We shouldn’t pretend that automatically answers every legal or tax question associated with adding someone to a property’s title.
FHA vs. Conventional With a Non-Occupant Co-Borrower
So which is better?
There isn’t one universal answer.
FHA may make more sense when:
The occupying borrower has a lower credit score, the transaction benefits from FHA’s underwriting flexibility, or an eligible family member is helping the borrower qualify while using a relatively small down payment.
Conventional may make more sense when:
The borrowers have stronger credit, Conventional mortgage insurance is more favorable, the non-occupying borrower relationship doesn’t fit neatly into FHA’s family rules, or the overall Conventional loan structure produces a better financial result.
This is exactly why we don’t want to choose a mortgage program based on one feature.
A borrower might technically qualify for both.
Then the question becomes:
Which one actually makes more financial sense?
That requires comparing the interest rate, mortgage insurance, down payment, closing costs, monthly payment and long-term cost—not simply whether both loans receive an approval.
What If the Co-Borrower Has Better Credit Than the Primary Borrower?
This is another common question.
Suppose the occupying borrower has a 650 credit score and their parent has an 800.
Can we simply use the parent’s 800 score for the mortgage?
Not necessarily.
Mortgage credit-score selection rules don’t generally work by simply choosing the highest score among everyone applying.
The credit profiles of all applicable borrowers matter, and the representative credit score used for qualification or pricing can depend on the loan program and underwriting rules.
So adding someone with excellent credit should not be viewed as a way to replace the occupying borrower’s credit profile.
Their stronger financial position may help the overall application.
But it doesn’t make the other borrower’s credit disappear.
What If the Co-Borrower Has Worse Credit?
This can create the opposite problem.
Imagine the occupying borrower has:
- 760 credit
- Stable employment
- Limited debt
They only need help because their income is slightly short.
A parent offers to help and has plenty of income—but their credit has significant recent problems.
Adding that parent could potentially create new qualification or pricing issues.
That’s why we should review the proposed co-borrower’s entire financial profile before adding them to the mortgage application.
Sometimes the person who seems like the obvious choice isn’t actually the best person to add.
Can a Co-Borrower Provide the Down Payment Too?
Potentially, depending on the mortgage program and structure.
But there is an important distinction between:
Borrower funds
and
Gift funds.
If someone is actually a borrower on the mortgage, their eligible assets may potentially be considered borrower funds subject to the applicable guidelines.
If someone isn’t a borrower but gives money to the buyer, those funds may need to satisfy the mortgage program’s gift requirements.
This is another reason not to casually move money between accounts before speaking with your mortgage professional.
A large deposit suddenly appearing in the buyer’s bank account can create documentation questions.
It’s much easier to structure the transaction correctly from the beginning than to explain a complicated trail of money afterward.
Should You Add a Co-Borrower Just to Qualify for a More Expensive House?
This deserves some caution.
Being able to qualify for a larger mortgage doesn’t automatically mean buying the more expensive home is the right decision.
A non-occupant co-borrower’s income may help satisfy mortgage underwriting requirements.
But if Mom or Dad isn’t actually contributing to the monthly payment, the occupying borrower still needs to be comfortable making that payment every month.
For example, suppose adding a parent allows a buyer to qualify for a $400,000 home instead of a $325,000 home.
That’s useful if the buyer’s real-world budget comfortably supports the larger payment and the qualification issue is primarily technical.
It’s a very different situation if the buyer already struggles to afford the smaller payment and is simply using someone else’s income to stretch into a much more expensive house.
Mortgage approval and personal affordability are not always the same thing.
We want both to make sense.
What Happens to the Co-Borrower After Closing?
This is where another very common question comes up:
“Can I just take my parent off the mortgage later?”
Usually, it isn’t as simple as calling the mortgage company and asking them to remove a borrower.
Once someone has signed the mortgage note, they remain responsible for that debt unless an acceptable legal process removes that obligation.
In many cases, that means the occupying borrower eventually needs to qualify for a mortgage refinance in their own name.
And that leads to several important questions:
When can you refinance?
Does the occupying borrower now have enough income to qualify independently?
What if rates are higher?
What happens if rates are lower?
Does removing someone from the mortgage also remove them from the property’s title?
Those are separate issues—and they’re important enough that we’ll cover them next.
How Does Being a Co-Borrower Affect Someone’s Ability to Get Another Mortgage?
This is one of the most important things to consider before someone agrees to help another person qualify for a mortgage.
Suppose a parent becomes a non-occupant co-borrower on their daughter’s mortgage.
Two years later, the parent wants to:
- Buy a vacation home
- Purchase an investment property
- Move into another primary residence
- Refinance their existing home
The daughter’s mortgage may now matter when the parent applies for financing.
Why?
Because the parent is legally obligated on that mortgage.
Even though they don’t live in the daughter’s house—and even if the daughter has made every payment—the debt may initially appear as an obligation when the parent’s DTI is calculated.
That doesn’t necessarily mean the entire mortgage payment will always have to count against them.
There can be an important exception.
Can Someone Else’s Mortgage Payment Be Excluded From Your DTI?
Potentially.
This is one of the most useful mortgage rules for someone who has co-signed or co-borrowed on another person’s debt.
Depending on the loan program and circumstances, an underwriter may be able to exclude a debt from a borrower’s DTI when another person is actually responsible for making the payments.
But documentation matters.
For Conventional financing, there are circumstances where a monthly obligation may potentially be excluded when another party has been making the payments and the applicable underwriting requirements are satisfied.
This can be extremely important.
Let’s go back to our example.
Dad helped his daughter buy a home two years ago.
The daughter’s mortgage payment is:
$2,200 per month.
Dad is now purchasing another home.
If that entire $2,200 payment has to be counted against Dad, it could significantly affect his ability to qualify.
But suppose the daughter has consistently made the mortgage payments from her own bank account for the required period and the documentation satisfies the applicable mortgage guidelines.
We may potentially be able to exclude that payment from Dad’s qualifying DTI.
That’s a very different outcome.
Don’t Assume the Mortgage Payment Will Automatically Be Excluded
This is where planning ahead matters.
Dad saying:
“My daughter makes the payment.”
isn’t necessarily enough.
Mortgage underwriting relies on documentation.
If Dad has actually been making the payments and his daughter reimburses him, that can be different from the daughter making the payments directly from her own account.
If payments bounce between several accounts, are made in cash or can’t be clearly documented, proving who has actually been responsible for the obligation can become more difficult.
This is why I tell borrowers not to wait until they’re applying for another mortgage to think about this.
If you’re becoming a co-borrower but someone else will actually make the payment, maintaining a clean, documentable payment history can become very valuable later.
What Happens If the Primary Borrower Makes a Late Payment?
This is one of the biggest risks of becoming a co-borrower.
If you’re obligated on the mortgage, the payment history can affect you too.
Suppose a parent helps their son qualify for a mortgage.
Everything goes perfectly for three years.
Then the son loses his job and misses a mortgage payment.
Dad may never have lived in the house.
Dad may never have made a mortgage payment.
Dad may not even have known the payment was late.
But Dad signed the mortgage note.
A late payment can potentially affect the credit profiles of the borrowers obligated on the loan.
That’s why agreeing to become a co-borrower requires a lot of trust.
You’re not merely helping someone qualify at closing.
You’re potentially tying part of your financial profile to how that mortgage is managed for years.
What If the Primary Borrower Stops Paying Completely?
This is the uncomfortable question that everyone should understand before closing.
If you’re a co-borrower, you don’t generally get to tell the mortgage servicer:
“That’s their house. I was only helping them qualify.”
You signed the loan.
If the mortgage isn’t paid, the lender or servicer can pursue the remedies available under the loan documents and applicable law.
The property could ultimately face foreclosure if the default isn’t resolved.
And the financial and credit consequences may affect the borrowers obligated on the mortgage.
That doesn’t mean using a non-occupant co-borrower is a bad idea.
Thousands of families help one another financially.
It simply means everyone should understand the responsibility they’re accepting.
Can You Remove a Co-Borrower From the Mortgage Later?
Possibly—but generally not simply because everyone agrees that it’s time.
One of the most common plans I hear is:
“My parents will help me qualify now, and we’ll take them off the mortgage in a year or two.”
That can be a reasonable long-term goal.
But the buyer should understand what will likely need to happen.
In many situations, removing the co-borrower from the mortgage requires the occupying borrower to refinance the existing loan into a new mortgage without that person.
At that point, the remaining borrower needs to qualify.
That means we may again evaluate:
- Income
- Employment
- Credit
- Debts
- Property value
- Equity
- Mortgage program
- Interest rates
So if Mom’s income was necessary to qualify for the original mortgage, the buyer needs to eventually reach a point where Mom’s income is no longer necessary.
When Does Refinancing to Remove a Co-Borrower Make Sense?
Imagine a buyer purchases a home at age 25.
Their income is $50,000, and their father helps them qualify.
Three years later, the buyer’s career has progressed and they now earn $78,000.
Their other debts have decreased.
Their credit has improved.
They may now be able to qualify independently.
That could be an excellent time to evaluate refinancing and removing Dad from the mortgage.
But we still need to look at the economics.
Suppose the original mortgage rate is 5.50%, but current rates are 7.00%.
Refinancing solely to remove Dad could significantly increase the buyer’s payment.
On the other hand, if the original rate is 7.00% and current rates have fallen to 5.75%, refinancing might accomplish two goals:
Remove Dad from the mortgage and reduce the interest rate.
That’s why the timing of a refinance matters.
We’ve covered this concept in more detail in our guide explaining when refinancing after buying at a higher rate actually makes sense.
Removing Someone From the Mortgage Is Different From Removing Them From the Title
This distinction is extremely important.
The mortgage note establishes responsibility for repaying the loan.
The title or deed deals with ownership of the property.
Those aren’t the same thing.
Depending on how the original transaction was structured, a non-occupant borrower may have an ownership interest in the home.
Refinancing a mortgage doesn’t automatically answer every question involving ownership.
Likewise, changing ownership doesn’t necessarily release someone from their responsibility for an existing mortgage.
If ownership needs to be changed, borrowers may need guidance from the title company or an appropriate Michigan attorney.
We can help structure the mortgage correctly.
Legal ownership questions should be handled by the professionals qualified to provide that advice.
What Happens If the Home Is Sold?
Selling the property is another way the existing mortgage obligation may ultimately be satisfied.
When the home is sold, the existing mortgage is generally paid off through the closing.
Once that debt has been paid in full, the co-borrower is no longer obligated on that particular mortgage.
That can make a sale simpler than trying to remove one borrower while keeping the existing loan in place.
Of course, selling the house solely to remove a co-borrower usually isn’t the goal.
But it illustrates an important point:
A co-borrower’s responsibility doesn’t necessarily last forever.
It generally lasts until the debt is paid off or the borrower is otherwise properly released from the obligation.
Can a Co-Borrower Help With the Down Payment but Not the Mortgage?
Absolutely—and sometimes that is the better solution.
Suppose the buyer has enough income to qualify for the mortgage independently.
Their problem is simply that they don’t have enough money for the down payment and closing costs.
In that situation, adding Mom or Dad to the mortgage may be unnecessary.
Depending on the loan program and circumstances, eligible gift funds may provide a much cleaner solution.
The parent helps financially.
The buyer qualifies for the mortgage independently.
And the parent doesn’t take on responsibility for a 30-year mortgage.
That’s why we need to identify the actual problem before choosing the solution.
If the problem is cash, we look at cash.
If the problem is income, we look at income.
If the problem is credit, we look at credit.
If the problem is DTI, we look at the debts and income creating the ratio.
Adding another borrower isn’t automatically the answer to all four.
Could Paying Off Debt Be Better Than Adding a Co-Borrower?
Sometimes, yes.
Consider a buyer who is barely over the acceptable DTI because of a $600 monthly car payment.
Their parent is considering becoming a non-occupant co-borrower.
Before doing that, we may want to determine whether addressing the car loan or another obligation produces a better result.
For example, depending on the balance, available assets and mortgage guidelines, reducing or eliminating a monthly obligation could potentially improve the buyer’s DTI enough to qualify independently.
That might be much cleaner than putting another person on the mortgage for years.
Again, the right answer depends on the numbers.
This is why understanding your debt-to-income ratio for a mortgage before house hunting can be so valuable.
What If the Borrower Just Needs a Little More Income?
Before adding another borrower, we should make sure we’re calculating the occupying borrower’s income correctly.
Mortgage qualifying income isn’t always as simple as looking at someone’s base salary.
A borrower may also receive:
- Overtime
- Bonuses
- Commission
- Shift differential
- Second-job income
- Retirement income
- Social Security income
- Rental income
- Other eligible recurring income
Whether those income sources can be used depends on the applicable guidelines and documentation.
A buyer who thinks they need a co-borrower may discover that they can actually qualify independently once all eligible income is properly analyzed.
That’s especially important for borrowers receiving overtime, bonus or commission income, where qualifying income can require a more detailed calculation than simply looking at the latest paycheck.
What About Someone Who Just Started a New Job?
This is another situation where borrowers sometimes assume they need a co-signer when they may not.
A buyer might say:
“I’ve only been at my new job for three months, so my dad needs to co-sign.”
Not necessarily.
Mortgage guidelines don’t universally require someone to have been at the exact same employer for two years.
Employment history, education, field of work, type of income and likelihood of continuance can all matter.
We’ve covered this separately in our guide to getting a mortgage after starting a new job.
Before adding another person to a mortgage, we should first determine whether the occupying borrower already qualifies under the applicable employment and income guidelines.
What About Self-Employed Borrowers?
Self-employed borrowers present another common scenario.
Someone may own a successful business and earn plenty of money in real life but show less qualifying income on their tax returns because of legitimate business deductions.
They may assume their only option is adding a co-borrower.
Again, maybe—but not necessarily.
We may first look at:
- Conventional self-employed income
- Business tax returns
- Personal tax returns
- K-1 income
- Business liquidity
- Bank statement loan programs
- Other Non-QM options
Depending on the situation, a bank statement loan may provide another way to document qualifying income without adding a parent or another person to the mortgage.
The goal isn’t simply to find a way to get the loan approved.
The goal is to determine which structure makes the most sense for the borrower.
When Is Using a Non-Occupant Co-Borrower a Good Strategy?
A non-occupant co-borrower can make a lot of sense when the primary borrower is financially responsible but needs additional qualifying strength.
For example:
A recent college graduate has started a strong career but hasn’t reached their future earning potential yet.
A first-time buyer has good credit and manageable debt but needs additional income to qualify.
A parent wants to help an adult child establish homeownership rather than simply providing cash.
A borrower’s income is temporarily lower than what is reasonably expected over the next several years.
In situations like these, a non-occupant co-borrower may provide a bridge between where the buyer is financially today and where they’re likely to be later.
When Might a Co-Borrower Be a Bad Idea?
There are also situations where I would want everyone to think carefully before moving forward.
For example:
The occupying borrower can’t realistically afford the payment without ongoing help.
The proposed co-borrower expects to apply for substantial financing soon.
The co-borrower has significant debts or credit problems.
The relationship between the borrowers isn’t financially stable.
Nobody has discussed what happens if the occupying borrower can’t make the payment.
The entire plan depends on refinancing the co-borrower off the mortgage within a very short period.
Those aren’t automatic deal-breakers.
But they’re reasons to slow down and look carefully at the structure.
A mortgage approval tells us the transaction satisfies the applicable underwriting requirements.
It doesn’t automatically tell us that every financial decision surrounding the transaction is a good one.
Get Pre-Approved Before Deciding You Need a Co-Signer
This is probably the biggest practical takeaway.
Don’t decide on your own that you need a co-signer before someone has actually reviewed your mortgage qualification.
I’ve seen borrowers assume they couldn’t qualify because:
Their credit score wasn’t high enough.
It was.
They hadn’t been at their job for two years.
They didn’t necessarily need to be.
Their student loans were too high.
The applicable mortgage calculation was different from what they expected.
They didn’t have 20% down.
They didn’t need it.
Their income wasn’t enough.
Once properly calculated, it was.
That’s why a real mortgage pre-approval should come before trying to restructure your finances or asking a family member to become responsible for your mortgage.
First, determine whether there’s actually a problem.
Then determine exactly what the problem is.
Only then should we decide whether adding a non-occupant co-borrower is the right solution.
What Documents Will a Non-Occupant Co-Borrower Need?
If someone does become a borrower on the mortgage, expect them to go through a real mortgage qualification process.
They may need to provide documentation such as:
- Income information
- Employment documentation
- Bank or asset statements when applicable
- Identification
- Credit authorization
- Information about existing mortgages and debts
- Other documents required by the loan program or underwriting
In other words, Mom isn’t simply signing one form at closing.
She’s applying for the mortgage too.
Her finances become part of the loan file.
That is something everyone should understand before beginning the process.
The Mortgage Still Has to Go Through Underwriting
Adding a non-occupant co-borrower doesn’t bypass normal mortgage underwriting.
The complete loan file still needs to satisfy the applicable requirements.
That includes reviewing the borrowers, income, assets, credit, liabilities and property.
An underwriter may request additional documentation or clarification during the process.
If you’re unfamiliar with that stage, our guide to mortgage underwriting and what Michigan homebuyers should expect explains what happens after the application moves into underwriting.
The presence of a co-borrower simply changes the financial structure being evaluated.
It doesn’t eliminate the evaluation.
The Best Co-Borrower Strategy Is Usually the Simplest One That Works
There is a tendency in mortgage financing to make things more complicated than necessary.
Sometimes adding a non-occupant co-borrower is exactly the right solution.
Other times, the borrower can qualify independently with a different loan program, proper income calculation, a slightly smaller purchase price, a debt adjustment or additional down-payment funds.
Our job isn’t to put as many people on the mortgage as possible.
It’s to find the cleanest mortgage structure that accomplishes the buyer’s goal without creating unnecessary financial obligations for someone else.
Real-World Examples of Using a Non-Occupant Co-Borrower
Mortgage guidelines make more sense when you see how they can work in actual situations.
The following examples are simplified, but they illustrate some of the most common reasons Michigan homebuyers consider using a co-signer or non-occupant co-borrower.
Scenario 1: A Parent Helps a First-Time Home Buyer Qualify
Sarah is buying her first home in Michigan.
She has:
- Stable employment
- Good credit
- Money saved for the purchase
- Limited consumer debt
The problem is income.
Sarah earns $52,000 per year, and the payment on the home she wants pushes her debt-to-income ratio above an acceptable level.
Her mother has stable income, good credit and relatively low monthly debt.
Instead of simply assuming Sarah can’t purchase the home, we could evaluate whether Mom can become an eligible non-occupant co-borrower.
If the loan program allows it, Mom’s qualifying income may be considered along with Sarah’s.
Sarah lives in the home.
Mom doesn’t.
But both become responsible for the mortgage.
This is one of the classic situations where a non-occupant co-borrower can potentially make sense.
Scenario 2: A Parent Offers to Co-Sign, but the Buyer Doesn’t Actually Need Them
Michael recently started a new job.
He earns $75,000 per year and assumes that because he hasn’t worked there for two years, he won’t qualify for a mortgage.
His father offers to co-sign.
Before adding Dad to the loan, we review Michael’s employment history, income structure and the applicable mortgage guidelines.
It turns out Michael may qualify independently.
In that situation, there may be no reason to put Dad on the mortgage.
Dad avoids taking on another substantial debt obligation, and Michael owns and finances the home independently.
This is exactly why borrowers should get properly pre-approved before deciding they need someone else on the loan.
Scenario 3: The Buyer Needs Cash, Not Income
Jennifer earns enough to qualify for the mortgage.
Her credit is strong.
Her DTI works.
Her issue is that she doesn’t have enough cash available for the down payment and closing costs.
Her parents are willing to help.
Instead of adding one of them as a co-borrower, we may be able to structure eligible gift funds depending on the loan program and transaction.
That solves the actual problem without unnecessarily making a parent responsible for the mortgage.
Again:
Income problem and cash problem are not the same thing.
The solution should match the problem.
Scenario 4: Adding Dad Actually Makes the Loan Worse
Chris needs additional income to qualify.
His father earns $120,000 per year, so everyone initially assumes Dad will easily solve the problem.
Then we review Dad’s financial profile.
Dad has:
- A large mortgage payment
- Two vehicle loans
- Significant revolving debt
- A second-home payment
Despite his strong income, his monthly obligations are substantial.
Once his income and debts are included, adding Dad doesn’t improve the combined qualification nearly as much as expected.
This is why we never want to say:
“Just add someone who makes more money.”
We have to calculate the complete picture.
Scenario 5: Mom Helps Today, but the Buyer Plans to Refinance Later
Emily buys her first home with her mother as a non-occupant co-borrower.
Emily is early in her career and expects her income to increase significantly.
Three years later:
- Her salary has increased
- Her credit has improved
- Her consumer debt has decreased
- She has built additional equity in the home
At that point, Emily may be able to qualify independently.
She could evaluate refinancing the mortgage into her own name, potentially releasing Mom from the mortgage obligation.
Whether that makes financial sense will also depend on the interest rate, closing costs and available loan terms at that time.
The important point is that “We’ll refinance Mom off later” should be a goal—not a guarantee.
Nobody knows today exactly what interest rates, property values, income or mortgage guidelines will look like several years from now.
Scenario 6: A Co-Borrower Wants to Buy Their Own Home Later
David helps his daughter buy a home as a non-occupant co-borrower.
Two years later, David decides to purchase another primary residence.
His daughter’s mortgage appears on his credit report because he’s obligated on the loan.
That could initially affect David’s DTI.
However, if his daughter has been making the mortgage payments herself and the situation satisfies the applicable mortgage guidelines and documentation requirements, there may be circumstances where that obligation can be excluded from David’s DTI.
This is why maintaining a clean paper trail can matter.
If someone else is supposed to make the mortgage payment, it’s generally much better to have a clear history demonstrating exactly who made those payments.
Scenario 7: The Buyer Has a Credit Problem, Not an Income Problem
Alex earns plenty of money to qualify.
His DTI is reasonable.
But his credit history includes recent significant derogatory events.
His uncle has excellent credit and offers to co-sign.
That doesn’t necessarily fix Alex’s problem.
Adding someone with better credit doesn’t erase the occupying borrower’s credit history or eliminate borrower-specific eligibility requirements.
The better strategy may be determining exactly what is preventing Alex from qualifying and what needs to happen before he becomes mortgage eligible.
This is another example of why adding a co-borrower shouldn’t be treated as a universal fix.
Common Mistakes When Using a Co-Signer or Non-Occupant Co-Borrower
Most problems aren’t caused by the concept of using a co-borrower.
They’re caused by misunderstanding what a co-borrower actually does.
Mistake #1: Assuming Good Credit Fixes Bad Credit
Adding someone with an 800 credit score doesn’t simply replace the other borrower’s credit.
Everyone’s applicable credit profile still matters.
Mistake #2: Looking at Income but Ignoring Debt
Someone earning $150,000 per year may sound like an ideal co-borrower.
But if that person also carries substantial monthly obligations, they may provide less qualifying benefit than expected.
Mistake #3: Assuming the Co-Borrower Can Be Removed Whenever You Want
Signing the mortgage creates a legal obligation.
Removing someone later may require refinancing or another permitted process.
Don’t build the entire purchase strategy around the assumption that someone will automatically be removed six months later.
Mistake #4: Moving Money Around Before Asking How It Should Be Structured
If parents are helping with funds, don’t randomly transfer money between accounts.
Determine whether the funds should be treated as borrower funds, gift funds or something else permitted under the applicable loan guidelines.
A clean transaction is easier to document.
Mistake #5: Assuming Every Loan Program Has the Same Rules
FHA and Conventional mortgages can treat non-occupant borrower situations differently.
The relationship between borrowers, occupancy, property type, LTV and other factors can matter.
Mistake #6: Using a Co-Borrower to Buy More House Than You Can Comfortably Afford
Qualifying and affordability aren’t identical.
If a parent isn’t going to help make the monthly payment, the occupying borrower should be comfortable carrying the payment themselves.
Mistake #7: Waiting Until You’ve Made an Offer to Figure This Out
This is one of the biggest mistakes.
If you may need a co-borrower, determine that during pre-approval—not after your purchase agreement is signed.
Changing borrowers or mortgage programs in the middle of a transaction can create unnecessary complications.
Questions to Ask Before Someone Co-Signs a Mortgage
Before adding another person to your mortgage, there are several questions worth answering.
Why do I need the co-borrower?
Is the problem income, DTI, credit, assets or something else?
Could I qualify under another mortgage program without them?
Sometimes FHA and Conventional financing produce very different qualification results.
Can I realistically afford the payment myself?
Especially if the co-borrower isn’t going to contribute toward the monthly housing expense.
Does the co-borrower expect to finance another property soon?
If so, we should discuss how this mortgage could affect that future application.
What happens if I make a late payment?
Everyone obligated on the mortgage should understand the potential consequences.
What’s our long-term plan?
Will the home eventually be sold? Is the goal to refinance once the occupying borrower’s income increases? Is the co-borrower comfortable remaining on the mortgage if refinancing doesn’t make sense?
Those conversations are much easier before closing than afterward.
Frequently Asked Questions About Co-Signers and Non-Occupant Co-Borrowers
Can my parents co-sign for my mortgage in Michigan?
Potentially, yes.
Parents are among the most common people to help an adult child qualify for a mortgage. Whether and how their income can be used depends on the loan program, underwriting requirements and complete financial profile of everyone involved.
Can my mom co-sign if she already owns a house?
Potentially.
Owning another home doesn’t automatically prevent someone from becoming a non-occupant co-borrower.
However, her existing mortgage and other applicable debts may need to be considered when calculating qualification.
Does a co-signer’s income count toward a mortgage?
It potentially can when the person is an eligible borrower under the applicable mortgage program and the income satisfies qualifying requirements.
But their applicable liabilities may also need to be counted.
Does a co-signer need good credit?
Credit matters.
Adding someone with strong income but problematic credit can create different underwriting challenges. The credit profiles of the borrowers need to be reviewed before deciding whether adding someone improves the application.
Can someone with an 800 credit score co-sign for someone with bad credit?
They may potentially be a borrower, but their 800 score doesn’t erase the other person’s credit history.
The occupying borrower still needs to satisfy the applicable mortgage eligibility requirements.
Does a non-occupant co-borrower have to be related to me?
Not always.
The answer depends heavily on the loan program.
Conventional financing can permit certain non-related non-occupant borrower arrangements. FHA has important rules involving family members and maximum financing, so the relationship can significantly affect how the loan is structured.
Can my boyfriend or girlfriend co-sign for my mortgage?
Potentially, depending on the loan program and transaction.
This is another situation where Conventional and FHA rules can differ, so we would want to review the relationship, occupancy and proposed mortgage structure before determining the best option.
Can a co-borrower live in another state?
The fact that a non-occupant co-borrower lives elsewhere doesn’t automatically mean they can’t participate in the mortgage.
After all, the entire point of a non-occupant borrower is that they aren’t going to occupy the subject property.
The complete transaction still needs to meet the applicable mortgage requirements.
Can a retired parent be a co-borrower?
Potentially.
Employment isn’t the only source of qualifying mortgage income.
Depending on the circumstances and documentation, eligible retirement, pension, Social Security and other qualifying income may potentially be used.
Can a co-borrower help me qualify for a larger mortgage?
Potentially, because additional qualifying income may improve the combined DTI.
But that doesn’t necessarily mean purchasing the most expensive home you can qualify for is a good financial decision.
The occupying borrower should still evaluate whether the payment fits comfortably within their actual budget.
Can I use a co-borrower with an FHA loan?
Yes, FHA permits eligible non-occupying co-borrower arrangements.
However, FHA has specific requirements, including rules involving the relationship between the borrowers and maximum financing.
Can I use a co-borrower with a Conventional loan?
Potentially, yes.
Conventional financing can permit non-occupant borrowers, subject to the applicable Fannie Mae or Freddie Mac guidelines and underwriting requirements.
Can I use a non-occupant co-borrower with a VA loan?
VA financing is different enough that I wouldn’t apply FHA or Conventional co-borrower rules to a VA transaction.
VA generally requires borrowers using the VA home loan benefit to meet VA occupancy and eligibility requirements, and certain joint-loan situations can have additional requirements.
If a Veteran needs another person’s income to qualify, we should evaluate the exact relationship and transaction rather than simply assuming a traditional non-occupant co-borrower structure will work.
Can a co-borrower help with the down payment?
Potentially.
The correct treatment of the funds depends on whether the person is actually a borrower, the loan program and how the transaction is structured.
If the person isn’t a borrower, eligible gift funds may sometimes be the more appropriate solution.
Will being a co-borrower affect my credit?
It can.
You’re obligated on the mortgage, and the loan may appear on your credit report. The payment history can therefore become important to your credit profile.
Will co-signing affect my ability to buy another house?
It can because you’re legally responsible for the mortgage.
However, depending on the mortgage program and documentation, there are situations where an obligation paid by another party may potentially be excluded from your qualifying DTI.
That should never be assumed in advance without reviewing the applicable guidelines.
How long does a co-signer have to stay on a mortgage?
There isn’t necessarily a predetermined date when someone automatically comes off the mortgage.
They generally remain obligated until the mortgage is paid off or they are properly released from the debt through an acceptable process, which may involve refinancing.
Can I refinance later and remove my co-borrower?
Potentially.
If you can qualify for the new mortgage independently at that time, refinancing may allow the existing mortgage to be paid off and replaced with a new loan without the original co-borrower.
Whether refinancing makes financial sense will depend on the rates, costs, equity and loan options available at that time.
Is a Co-Signer the Right Way to Help You Buy a Home?
Maybe.
But that’s not where I would start.
I would start by figuring out whether you actually need one.
A good mortgage pre-approval should tell us much more than whether a computer says approved or denied.
We want to understand:
- How much you qualify for
- What your payment may look like
- Which mortgage programs fit
- Whether your income is being calculated correctly
- How your debts affect qualification
- How much money you’ll need to close
- Whether adding another borrower actually improves the loan
Sometimes a non-occupant co-borrower is the piece that makes homeownership possible.
Other times, we discover a cleaner solution that allows the buyer to qualify independently.
At BrightSide Lending, we help homebuyers throughout Michigan evaluate Conventional, FHA, VA, USDA and other mortgage options and determine how to structure the financing around the borrower’s actual situation.
If you’re wondering whether you need a co-signer—or whether a parent or family member can help you qualify—the best time to figure that out is before you start making offers on homes.
That gives us time to compare the options, run the numbers and build the mortgage correctly from the beginning.
BrightSide Lending
307 East Street
Rochester, MI 48307
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