I am trying to calculate how much of my auto payments are going to go to the principle and how much will go to the interest because I'm taking a new job with a much higher salary and I want to increase my payments in order to pay the car off sooner or or possibly get the remaining amount owed down to an amount I can sell it for. The problem is when I look at the table on my loan companies website the amounts going to the principle and interest are all over the board. When I look at amortization tables show the amounts increasing/decreasing are not like that. The amount going to the principle increase as the loan ages while the amount going to the interest decreases. What am I missing here?