A cosigner is a second person who agrees to take full legal responsibility for your loan. Their credit and income are added to the application, which can mean approval where you'd be declined on your own — or a meaningfully better rate.
Cosigner vs co-borrower
A cosigner is on the hook for the debt but has no ownership of what the loan paid for. A co-borrower is jointly liable AND jointly owns the asset (common on mortgages and auto loans between spouses).
Risks for the cosigner
The full loan appears on the cosigner's credit report and counts toward their DTI — which can block them from qualifying for their own credit. Late payments hurt both parties' scores. If the primary borrower defaults, the lender can pursue the cosigner for the full balance.
Cosigner release
Some lenders allow cosigner release after 12–48 months of on-time payments and a credit re-evaluation of the primary borrower. Always confirm release terms in writing before signing.
Frequently asked questions
Can a cosigner remove themselves from a loan?
Only with lender approval through a cosigner release, or by the primary borrower refinancing the loan in their name alone.