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Co-Signer: Definition & Example

Also called: Cosigner

Co-Signer definition: A co-signer is a person who signs a lease or loan with the primary applicant and becomes legally responsible for the debt if the primary applicant does not pay.
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What Is a Co-Signer?

A co-signer is a person who signs a lease or loan with the primary applicant and becomes legally responsible for the debt if the primary applicant does not pay.

What does co-signer mean?

A co-signer adds their income and credit history to an application that might not qualify on its own. Lenders and landlords accept a co-signer because it gives them a second person to collect from.

For loans, the Federal Trade Commission warns that a co-signer may have to pay the full amount owed, plus late fees or collection costs, and the loan can appear on the co-signer’s credit report. For leases, the co-signer’s liability depends on what they sign, but it commonly covers unpaid rent and damages for the full lease term.

The terms co-signer and guarantor are often used interchangeably. In rentals, a co-signer typically signs the lease itself, while a guarantor signs a separate guaranty. Both usually go through income and credit screening.

Co-signer example

A recent graduate wants to lease a car but has little credit history. Her aunt co-signs the loan. When the graduate misses two payments, the lender reports the late payments on both of their credit reports and asks the aunt to bring the account current.

Related terms

Co-signer FAQ

Does co-signing affect your credit?
It can. The debt may appear on the co-signer’s credit report, and missed payments by the primary borrower can lower the co-signer’s credit score.
Can a co-signer be removed from a lease?
Only if the landlord agrees, usually through a lease amendment or a new lease. Removing a co-signer normally requires the tenant to qualify alone.

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    What Is a Co-Signer? Definition & Example | Income Checker