Do you need a co-signer for a car loan?

What a co-signer changes, and what it does not

A co-signer adds their credit history to the file, which can move the rate down a tier or two. It does not replace your income: the lender still needs you to afford the payment. It does not erase a repossession or an unsettled deficiency. And it does not help much if the co-signer's own credit is only average.

What the co-signer is signing up for

Full liability. If you miss, they owe, and the missed payment lands on their report as well as yours. The loan also counts against their borrowing capacity for as long as it runs, which matters if they plan a mortgage. Say that out loud before you ask someone; it is the conversation that keeps families intact.

Alternatives that do the same job

Before you ask anyone, try these.

• A larger down payment. A thousand or two down does what a co-signer does for the rate, with nobody else on the hook.
• A slightly cheaper vehicle. Rate tiers move with the loan-to-value ratio.
• A shorter wait. Three more months on the job or one more season of clean payments can move a tier on its own.
• A co-borrower instead: a spouse who shares the car and the payment, with both incomes counted.

When a co-signer is the right call

A young buyer with a part-time job and a parent willing to sign. A newcomer whose spouse has Canadian credit. A buyer weeks out of a discharge who needs the car for a new job now. In those files a co-signer turns a maybe into a yes, and we will say so.