Cosigning a Loan: Risks, Benefits, and What You Need to Know

Cosigning a loan means you agree to take on legal responsibility for someone else's debt. When you cosign, you promise the lender that if the primary borrower can't make payments, you will.

A cosigner is typically someone with a strong credit history and stable income who helps a borrower qualify for financing they wouldn't get on their own. The borrower might need a cosigner because they have limited credit history, a low credit score, or insufficient income to meet the lender's requirements.

According to the FTC, cosigning is not just a formality. You are putting your own finances and credit on the line. If the borrower defaults, the lender can come after you for the full balance, plus late fees and collection costs, without even trying to collect from the borrower first.

When a borrower applies for a loan with a cosigner, both parties submit personal and financial information to the lender. The lender evaluates both credit profiles to make the lending decision.

The lender runs a hard credit inquiry on both the borrower and cosigner. This can temporarily lower both credit scores by a few points. If approved, the loan terms (interest rate, repayment schedule, loan amount) are based on the combined creditworthiness of both applicants.

Both the borrower and cosigner sign the loan agreement. Once signed, the borrower receives the funds. The primary borrower is expected to make all monthly payments, but if they miss even a single payment, the cosigner becomes responsible.

An important distinction: the cosigner does not receive any of the loan funds and has no ownership rights to whatever the loan pays for. Your only role is to guarantee repayment.

You can cosign several types of loans. Each comes with different levels of risk and commitment.

Personal loans are one of the most common types of cosigned loans. Borrowers with thin credit files or low scores often need a cosigner to qualify or to get a lower interest rate. Cosigning a loan with bad credit is one of the primary reasons people seek cosigners in the first place. Personal loan terms typically range from 2 to 7 years.

Auto loans are another frequent use case. Parents commonly cosign car loans for children who are buying their first vehicle. These loans are secured by the car itself, which provides some protection but also means the vehicle can be repossessed if payments stop.

Student loans represent a significant cosigning category. Private student loans often require a cosigner for borrowers under 21 or those without established credit. Federal student loans do not require cosigners, with the exception of Parent PLUS loans.

Mortgage loans carry the highest stakes. Cosigning a home loan means you're guaranteeing a debt that could be hundreds of thousands of dollars over 15 to 30 years. Cosigning a mortgage also increases your debt-to-income ratio, which can make it harder for you to qualify for your own mortgage later.

Rental agreements are another area where cosigning is common. While not technically a loan, parents frequently cosign apartment leases for children who don't meet income requirements on their own.

The FTC warns that depending on the type of loan, as many as 75% of cosigned loans end up in default. That statistic alone should make any potential cosigner think carefully before signing.

You are 100% liable for the debt. If the borrower stops paying, the lender can come directly to you for the entire remaining balance. They don't have to try collecting from the borrower first. They can also charge you late fees, collection costs, and attorney's fees.

Your credit score is at risk. The cosigned loan appears on your credit report. Late payments, missed payments, and defaults will damage your credit just as much as the borrower's. Even if you had a perfect credit history, one cosigned loan gone wrong can tank your score.

Your debt-to-income ratio increases. Lenders count the full monthly payment of the cosigned loan as your debt obligation, even if you're not the one making payments. This can prevent you from qualifying for your own mortgage, car loan, or credit card. For someone earning $5,000 per month, every $100 in cosigned loan payments adds roughly 2% to your DTI ratio.

Removing yourself is extremely difficult. You generally cannot remove yourself as a cosigner without the lender's permission. The CFPB reports that 9 out of 10 cosigner release applications on student loans are rejected. Your main options are having the borrower refinance the loan independently or paying off the remaining balance yourself.

Relationships can suffer. Money disputes strain even the closest relationships. When a family member or friend can't keep up with payments on a loan you cosigned, the financial stress often turns personal.

Yes, cosigning a loan affects your credit in several ways, and the impact can be positive or negative depending entirely on how the borrower handles payments.

Hard credit inquiry. When you apply as a cosigner, the lender pulls your credit report. This hard inquiry can temporarily lower your score by 5 to 10 points. The effect fades within a few months and drops off your report after two years.

New account on your report. The cosigned loan appears as an active account on your credit report. This increases your total debt load and can lower your credit utilization ratio if it's a revolving account like a credit card.

Payment history (for better or worse). If the borrower makes every payment on time, your credit benefits. Payment history accounts for about 35% of your FICO score. But if the borrower misses payments, those late marks hit your credit report too. Even a single 30-day late payment can cause a significant score drop.

Debt-to-income ratio. While not part of your credit score, your DTI ratio matters when you apply for your own loans. The cosigned loan payment counts as your monthly obligation. Lenders typically want to see a total DTI below 43% to 50%, and the cosigned debt could push you over that threshold.

If you decide to cosign, take steps to minimize your risk.

Get copies of all loan documents. Make sure you have copies of every document related to the loan, including the promissory note, repayment schedule, and any notices the lender is required to send. Some states require lenders to notify cosigners before reporting negative information.

Ask the lender to notify you of missed payments. Request that the lender contact you immediately if the borrower misses a payment. Early warning gives you time to make the payment yourself before it hits your credit report. Most late payments aren't reported until they're 30 days past due.

Monitor the loan regularly. Don't assume everything is fine. Check the loan status at least monthly. Many lenders offer online portals where you can track payment activity.

Set aside an emergency fund. Before cosigning, make sure you could afford to make the loan payments if the borrower stops paying. If you can't cover the payments without financial hardship, cosigning is too risky.

Consider the total amount you could owe. Remember that you're not just on the hook for the principal. You could also be liable for interest, late fees, collection costs, and even attorney's fees if the lender sues.

Put agreements in writing. If you're cosigning for a family member or friend, consider creating a written agreement that outlines expectations: who makes payments, what happens if they can't, and a plan for eventually releasing you from the obligation.

Getting out of a cosigned loan is difficult but not impossible. Here are your options.

Cosigner release. Some lenders offer a cosigner release provision that allows you to be removed after certain conditions are met. Typically, the borrower needs to make 24 to 48 consecutive on-time payments and demonstrate they can handle the loan independently. Not all lenders offer this option, so check the loan agreement before signing.

Refinancing. The borrower can refinance the loan in their name only. This creates a new loan and eliminates your obligation on the original. For this to work, the borrower needs sufficient credit and income to qualify alone. This is often the most practical path to removal.

Paying off the loan. If you or the borrower can pay off the remaining balance, the loan closes and your obligation ends. Contact the lender for a payoff quote, which includes any remaining interest.

Negotiating with the lender. In some cases, you can contact the lender directly and request removal. This is more likely to succeed if the borrower has built a strong payment history and improved their credit since the loan originated. However, lenders have no obligation to agree.

If you want to help someone financially without taking on the full risk of cosigning, consider these alternatives.

Help build their credit first. Instead of cosigning, add them as an authorized user on your credit card. They'll benefit from your payment history without you taking on new debt. Over time, this can help them qualify for loans on their own.

Make a gift instead. If you can afford it, gifting money for a down payment or security deposit might be more practical. You avoid the ongoing liability, and the borrower gets immediate help.

Secured credit products. The borrower can apply for a secured credit card or a credit-builder loan. These products are designed for people with limited credit history and don't require a cosigner.

Federal student loans. For education expenses, federal student loans don't require cosigners and offer income-driven repayment plans and forgiveness options that private loans lack.

Lend the money yourself. If you have the resources, consider making a personal loan directly to the borrower. Put the terms in writing and set up automatic payments. This way, you control the terms and can be more flexible than a lender would be.

These terms sound similar but carry different levels of responsibility and rights.

A cosigner guarantees the loan but has no ownership rights. The cosigner doesn't receive any of the loan funds and is only called upon to pay if the primary borrower defaults. The loan appears on both credit reports from day one.

A co-borrower (also called a co-applicant or joint borrower) shares equal responsibility for the loan AND equal access to the funds or property. Both parties own the asset and both must make payments. This is common with married couples applying for a mortgage together.

A guarantor is similar to a cosigner but is typically used in rental agreements or business loans. The key difference: a guarantor is usually only contacted after the lender has exhausted all collection efforts against the primary borrower. A cosigner can be pursued immediately.

There is no universal credit score requirement for cosigners, but the whole point of having a cosigner is to strengthen the loan application. Most lenders look for cosigners with a credit score of at least 670, though a score of 700 or higher gives the borrower the best chance at approval and favorable rates.

Beyond your credit score, lenders also evaluate your income, employment stability, existing debt obligations, and overall financial picture. A high credit score alone won't help if your DTI ratio is already stretched thin.

For mortgage loans specifically, cosigners typically need a credit score of at least 620 for conventional loans and 580 for FHA loans. However, the higher the cosigner's score, the better the interest rate both parties receive.