Student Loan Payoff Calculator

About this calculator

This calculator works in reverse from a standard loan amortization schedule: instead of computing the payment from a fixed term, it takes your loan balance, interest rate, and a fixed payment amount you plan to make, then calculates how many months it will take to pay the balance down to zero as interest accrues on the shrinking balance each period.

This is especially useful for student loan borrowers considering paying more than the minimum required payment, since even a modest increase can cut years off the payoff timeline and substantially reduce total interest paid, thanks to how amortization front-loads interest on the earliest balance. This calculator takes your loan balance, interest rate, and fixed monthly payment to show how many months until the loan is paid off.