You have to pay the minimum amount of your car loan so they get their interest that month but you can pay extra on the principal in most cases. What I did was say you are paying 300 a month and your statement indicates that 200 is interest and 100 is principal, I'd designate that another 50 or 100 was for principal. If they give you payment books, I'd take out my monthly payment and then write myself a note on the last payment that I put that amount on the last payment. If I gave an extra 100 and the principal was 100 at that time, I'd just fold over the last payment as that is in essence what I did. I hope that makes sense
