Helping your child buy a home can be a great way to give them a financial head start. If they have limited income, a shorter credit history, or trouble qualifying on their own, you may consider co-signing their mortgage.

Before you sign, though, it’s important to understand exactly what you’re agreeing to.

When you co-sign a mortgage, you aren’t simply telling the lender that you believe your child will make the payments. You’re taking on responsibility for the loan. Depending on the loan structure and program, your income, debts, credit history, and other financial information may be considered during the mortgage approval process.

That can help your child qualify, but it also creates some important considerations for you.

For example, the mortgage debt may affect your debt-to-income ratio and could make it harder to qualify for another loan of your own. If payments are missed, your credit could also be affected. And if your child eventually wants to refinance and remove you from the mortgage, they’ll typically need to qualify based on the lender’s requirements at that time.

Parents should also understand that being on the mortgage and having ownership of the property are not necessarily the same thing. How borrowers and owners are listed can have legal, financial, and tax implications, so those details should be discussed before closing.

It’s also worth exploring whether co-signing is actually necessary. Sometimes a borrower may qualify through a different loan program, with a larger down payment, by paying down certain debts, or after making a few adjustments to their financial profile.

The best approach is to look at the entire situation before anyone commits.

Co-signing can absolutely help a son or daughter become a homeowner, but it shouldn’t be treated as “just a signature.” Ask questions, understand how the loan could affect both parties, and make sure everyone knows what they’re responsible for before sitting down at the closing table.