What is the difference between a co-borrower and a cosigner on a personal loan?

Co-borrower: Both applicants apply together, both income and credit profiles are evaluated, both are listed as borrowers on the promissory note. The loan proceeds can be used by either or both borrowers. The loan appears on both credit reports from day one. Monthly payments made (or missed) by either party affect both credit scores. Co-borrowers are common for couples taking out a home improvement loan together or business partners financing shared expenses.

Cosigner: The primary borrower applies and intends to use the loan funds. The cosigner adds their creditworthiness as a backup guarantee. The cosigner does not typically receive or use the loan proceeds. The loan usually appears on both credit reports (varies by lender). The primary borrower manages payments, but missed payments damage the cosigner's credit as well as the primary borrower's. Cosigners are common when the primary borrower lacks sufficient credit history or income to qualify alone.

Legal liability: In both cases, the lender can pursue either party for the full outstanding balance if payments stop. The lender does not care about internal agreements between you and your co-borrower/cosigner about who 'really' owes the money.

Which should you choose: If both parties are using the loan funds and have income that should be counted (for a higher loan amount or better rate), use a co-borrower. If one person needs a credit or income boost to qualify but is the sole user of the funds, a cosigner is the right structure. Some lenders only offer one option or the other - check before applying.

Cosigner release vs. co-borrower removal: Some lenders allow cosigner release after 12-24 months of on-time payments. Removing a co-borrower is harder - typically requires refinancing the loan in only one borrower's name.