Cosigning and co-borrowing: what you owe and how to get out

“If the borrower doesn’t pay the debt, you will have to.” That sentence comes from the federal Notice to Cosigner, and it’s as plain a summary of cosigning as you’ll find. The rest of the notice is mostly about how far that obligation reaches.

People usually cosign for someone they trust: a child, a partner, a sibling. Trust doesn’t change how the debt is reported or how the next lender will look at you. That’s what this page covers, along with the ways off a loan once you’re on it.

Cosigner, co-borrower and authorized user owe different things

The labels get used loosely, so it helps to sort them by who owes the money and who gets something out of it.

An authorized user can walk away from the account. A cosigner or co-borrower can’t, at least not without the lender’s say. If you’re being asked to guarantee a lease rather than a loan, read the guaranty itself; credit scores and renting covers how landlords use guarantors.

The notice the lender has to give you first

The FTC’s Credit Practices Rule (16 CFR 444.3) makes it an unfair practice for a covered lender or retail installment seller to obligate a cosigner without first telling them what they’re signing up for. The lender complies by handing you a separate document that contains only the Notice to Cosigner. Its key lines, word for word:

• “You may have to pay up to the full amount of the debt if the borrower does not pay.”
• “You may also have to pay late fees or collection costs, which increase this amount.”
• “The creditor can collect this debt from you without first trying to collect from the borrower.”
• “If this debt is ever in default, that fact may become a part of your credit record.”
• “This notice is not the contract that makes you liable for the debt.”

The notice also says the creditor can use the same collection methods against you that it can use against the borrower, “such as suing you, garnishing your wages, etc.” The FTC adds one gap: federal law doesn’t require the notice for real estate purchases, so a mortgage cosigner may never see it. Missing the notice doesn’t make the debt disappear. The contract you signed is what creates the obligation.

In most states, the FTC says, the lender doesn’t have to chase the borrower first. If a payment is missed, the creditor can come straight to you.

How a cosigned loan shows up on your credit report

The FTC says the creditor can report the loan to the credit bureaus as your debt. In practice, that means the account can appear on your report much as it does on the borrower’s: the lender, the original amount, the current balance, the monthly payment and the month-by-month payment history. Bureaus use a code (often called an ECOA code) to mark each person’s relationship to the account, but your scores still see the debt.

A few consequences follow from that:

• The borrower’s late payments can become yours. A 30-day late on a cosigned car loan can show on both reports. You may not hear about it from the borrower first.
• The balance counts. An installment loan you cosigned adds to the amounts you owe. A cosigned credit card balance can affect your utilization.
• It can help, too. If the borrower pays on time for years, that history appears on your report as well.

The FTC suggests asking the lender to send you copies of monthly statements or written notice of missed payments, and checking your own reports regularly. Free weekly reports at AnnualCreditReport.com make that easy.

Cosigning doesn’t give you a way to dispute the account off your report later. If the loan is yours by contract and reported correctly, it isn’t dispute material. What not to dispute explains why trying can backfire.

What a cosigned loan does to your next application

The FTC warns that lenders may count a cosigned loan against you when you apply for credit, even if the borrower is paying on time. The usual mechanism is your debt-to-income ratio (DTI): your monthly debt payments divided by your gross monthly income.

Example: say you earn $7,000 a month before taxes and apply for a mortgage with a projected housing payment of $1,900. Your own debts are a $400 car payment and $150 in card minimums. You also cosigned your son’s car loan, which has a $450 payment.

That 6.4-point difference can change how much house a lender will approve, or whether it approves at all, depending on its limits.

There’s a documented way around it for loans sold to Fannie Mae. Its Selling Guide (B3-6-05, dated 08/05/2026) lets the lender exclude a non-mortgage payment from your obligations when you’re obligated on the debt but someone else is actually repaying it. The lender needs the most recent 12 months of canceled checks or bank statements from the person paying, showing a 12-month history with no late payments. If even one of those payments was late, the exclusion is off the table. The rule doesn’t apply if the person paying is an interested party to your transaction. Cosigned mortgage payments have a separate test in the same section.

If you might buy a home in the next year, ask the borrower now to pay from their own account every month, so the 12-month record exists when you need it.

Getting off a cosigned loan

There is no unilateral exit. The FTC says a lender isn’t likely to release you, because doing so raises its risk, and any release needs both the lender and the borrower to agree. These are the realistic routes:

1. A cosigner release clause. Some loans, especially private student loans, advertise release after a run of on-time payments and a credit check on the borrower. The CFPB found in 2014 that most student loan servicers didn’t tell borrowers when they became eligible, so the borrower has to ask. Get the exact requirements in writing early, and make sure no payment is late.
2. Refinancing in the borrower’s name. Once the borrower qualifies alone, a new loan pays off the old one and your obligation ends with it.
3. Selling the asset and paying off the loan. Common with cars. The payoff closes the account for both of you.
4. Paying it off yourself. Not ideal, but it caps your exposure.

Private student loans carry one more risk worth knowing. The same 2014 CFPB report found that many contracts let the lender demand the full balance or place the loan in default if the cosigner dies or files for bankruptcy, even when the borrower is current. Read the loan agreement for that clause before you sign.

Closing the account doesn’t erase its history. The paid or refinanced loan stays on your report as a closed account, with whatever payment history it had.

A lender can’t demand a cosigner from a qualified applicant

Regulation B, which implements the Equal Credit Opportunity Act, limits when a creditor can demand an extra signer. Its official interpretation says it is impermissible for a creditor to require an applicant who is individually creditworthy to provide a cosigner. When an applicant does need support, the creditor may ask for a cosigner or guarantor, and a spouse may serve, but under 12 CFR 1002.7(d)(5) the creditor can’t require that the spouse be the one. If a lender tells a qualified applicant “we need your husband’s signature,” that’s worth questioning.

When marriages end, joint and cosigned debts don’t split themselves. Divorce, joint accounts and your credit covers what a divorce decree can and can’t change.

Before you sign

• Ask the borrower for a budget that shows how the payment fits, and decide whether you could cover it yourself for a year.
• Ask the lender for the total you could owe if the borrower defaults, including fees.
• Ask whether the loan has a cosigner release, and get the terms in writing.
• For a private student loan, check the contract for what happens if you die or file for bankruptcy.
• Arrange to get statements or missed-payment alerts sent to you, and check your reports often.
• If you plan to buy a home, set up a clean 12-month payment trail from the borrower’s own account.