<prompt> Human: Ive seen a lot of posts about student loans and debt payoff, and I think people will find this useful. Like lots of graduates, I have a few loans with different principles and interest rates. If I wanted to pay more than the minimum payment, how should I spread the additional amount to optimize payback?There are a few payment strategies such as pay the highest interest rate loan first, but nothing that I could find truly optimized it. This program tries almost all pay schedules and determines which will give the minimum total amount.I dont have any ads or anything - just wanted to figure out this problem and help if I could. There are further explanationsinstructions on the site.loan-calcsLate long edit to try and explain in more detail why paying the highest interest rate isnt always the best solution. The program assumes a steady state payment strategy, so each loan is paid the same amount during the length of the loan. Whats minimized is the total payment on the loans and this benefit is a factor of principle and interest. If you pay off one loan quickly, the other loan is active for longer - thus youre making payments for a longer period.After a loan is payed off, it does not allocate that loans payment to the other loans. I chose to write it this way because that is what I planned to do with my finances. I cant speak to how the scenario plays out if the allocation is different, Ill only explain how the program works since this still might by how other people would like to use it.Using the scenario I mentioned in the comments with Loan 1 at 50k and 5, and Loan 2 at 75k and 4, here are the details using a constant payment on each loan with each strategy. I used this site to validate my results.I couldnt figure out the formatting to put it in the text and be readable - here is a picture of the data.The difference is 2,997 more paid if using High Interest strategy  <response>: Try unbury.me 