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Prepaying a loan: Shouldn't the interest be recalculated like a shorter loan?
A few years ago I had a 5 year car loan. I wanted to prepay it after 2 years and I asked this question to the lender. I expected a reduction in the interest attached to the car loan since it didn't go the full 5 years. They basically told me I was crazy and the balance owed was the full amount of the 5 year car loan. This sounds like you either got a bad car loan (i.e. pay all the interest first before paying any principal), a crooked lender, or you were misunderstood.  Most consumer loans (both car loans and mortgages) reduce the amount of interest you pay (not the _percentage) as you pay down principal. The amount of interest of each payment is computed by multiplying the balance owed by the periodic interest rate (e.g. if your loan is at 12% annual interest you'll pay 1% of the remaining principal each month). Although that's the most common loan structure, there are others that are more complex and less friendly to the consumer. Typically those are used when credit is an issue and the lender wants to make sure they get as much interest up front as they can, and can recover the principal through a repossession or foreclosure. It sounds like you got a precomputed interest loan.  With these loans, the amount of interest you'd pay if you paid through the life of the loan is computed and added to the principal to get a total loan balance. You are required to pay back that entire amount, regardless of whether you pay early or not. You could still pay it early just to get that monkey off your back, but you may not save any interest.   You are not crazy to think that you should be able to save on interest, though, as that's how normal loans work.   Next time you need to borrow money, make sure you understand the terms of the loan (and if you don't, ask someone else to help you). Or just save up cash and don't borrow money ;)