Cosigner.
In plain English
A cosigner lends you their credit. The lender approves the loan based on the stronger credit profile, and in exchange the cosigner owes the debt exactly as much as the borrower does: missed payments hit both credit reports, collectors can pursue either person, and the full balance counts in the cosigner's debt-to-income ratio when they apply for their own credit. Some loans offer cosigner release after a run of on-time payments; many never do.
01Why it matters
Cosigning is routinely described as "just helping someone qualify," which understates it by the entire amount of the loan. Both parties deserve the real definition before signing.
02The math, step by step
A parent cosigns a $25,000 car loan. Two years later they apply for a mortgage: the car payment counts in their DTI even though they've never paid it. If the borrower misses month 30, the late mark lands on both reports and the lender can demand payment from the parent directly.
03What this is NOT
A cosigner is a co-borrower in every way that matters legally, usually without access to the car, the apartment, or the statements.
04Receipts
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Plain-English answers from our glossary. Receipts included. Never advice.
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