Facts About Using a Co-Signer on a Mortgage

If you’re thinking about buying a home with a co-signer, be sure you know what that means for both you and them.

Do you need a co-signer to buy a home? To help you decide, let’s review the reasons you might use a co-signer, the types of co-signers, and the various requirements lenders have for allowing co-signers.

When to use a co-signer

Many young professionals ask their parents to co-sign while they’re ramping up their income. Other lesser-known but still common scenarios include:

• Divorcees use co-signers to help qualify for a home they’re taking over from ex-spouses.
• People taking career time off to go back to school use co-signers to help during this transitional phase.
• Self-employed borrowers whose tax returns don’t fully reflect their actual income use co-signers to bridge the gap.

Before using a co-signer, make sure all parties are clear on the end game. Will you ever be able to afford the home on your own? Is the co-signer expecting to retain an ownership percentage of the home?

Types of co-signers

There are two main types of co-signers: those that will live in the home, and those that will not. Lenders refer to these as occupant co-borrowers and non-occupant co-borrowers, respectively.

• Non-occupant co-borrowers are the more common category for co-signers, so the lender requirements summarized below are for non-occupant co-borrowers.
• Occupant co-borrowers who are co-signing on a new home can expect lenders to scrutinize the location and cost of their current home, and should also expect post-closing occupancy checks to verify they’ve actually moved into the new home.

Ownership considerations for co-signers

Lenders require that anyone on the loan must also be on the title to the home, so a co-signer will be considered an owner of the home.

If borrowers take title as joint tenants, the occupant and non-occupant co-borrowers will each have equal ownership shares to the property.

If borrowers take title as tenants in common, the occupant and non-occupant co-borrowers can define their individual ownership shares to the property.

Financial considerations for co-signers

Lenders allow occupant and non-occupant co-borrowers to have different ownership shares in the property because the Note (which is the contract for the loan) makes them both equally liable for the loan.

This means that if an occupant co-borrower is late on the mortgage, this will hurt their credit and the non-occupant co-borrower’s (aka the co-signer’s) credit.

Another co-signer risk is that the co-signed mortgage will often count against them when qualifying for personal, auto, business, and student loans in the future. But the co-signed mortgage can sometimes be excluded from future mortgage loan qualification calculations if the co-signer can provide documentation to prove two things to their new mortgage lender:

• The occupant co-borrower has been making the full mortgage payments on the co-signed loan for at least 12 months.
• There is no history of late payments on the co-signed loan.

Lender requirements for co-signers

Occupant co-borrowers must have skin in the game when using a co-signer, and lender rules vary based on loan type and down payment. Below are common lender requirements for co-signers. This list isn’t all-inclusive, and conditions vary by borrower, so find a local lender to advise on your situation.

• For conforming loans (up to $417,000, and high-balance conforming loans up to $625,500 by county), Fannie Mae and Freddie Mac will allow for the debt-to-income ratio (DTI) to be calculated by simply combining the incomes of the occupant and non-occupant co-borrower. This is known as a “blended ratio,” and is especially helpful when the co-signer has most of the income.
• Conforming loans will require at least a five-percent down payment to allow a co-signer.
• For conforming loans with less than 20 percent down, lenders will require at least five percent of the down payment come from the occupant co-borrower. Flexible programs like Fannie Mae HomeReady loan allow blended ratios for co-signers, and go further by allowing income of people who won’t even be on the loan but that will verify in writing that they’ll be living in the home with you for at least 12 months.
• Some jumbo loans above $417,000 (or above the conforming high-balance limit by county) will allow blended ratios for qualifying with co-signers. Your lender will advise based on your down payment, reserves left over after the loan closes, loan amount, credit score, and other components of your profile.
• Many jumbo loans allow for the occupant co-borrower’s DTI to go as high as 50 percent when using a co-signer, but in most of these cases, at least 10 percent of the down payment must come from the occupant co-borrower.
• Select jumbo loans allow for the occupant co-borrower’s DTI to go as high as 75 percent when using a co-signer, but there will be many other requirements, and the rates won’t be as competitive.

Related:

• What is a Mortgage?
• How Mortgage Strategy Differs for Millennials, Gen Xers, and Baby Boomers
• 5 Mortgage Misconceptions Set Straight

Note: The views and opinions expressed in this article are those of the author and do not necessarily reflect the opinion or position of Zillow.