Student Loan Payoff Calculator

How to use this calculator

Enter loan balance, interest rate, monthly payment, and extra payment. The tool estimates payoff months and interest paid.

When this calculator is useful

• Comparing payoff acceleration
• Planning around refinancing offers
• Understanding interest cost over time

Important limitations

Income-driven repayment, forgiveness programs, subsidized interest, and policy changes are not modeled.

For best results, run at least three cases: a conservative case, a middle case, and a stretch case. If a small change in inputs creates a big change in the answer, that is a sign the decision may be sensitive to rates, fees, timing, or market performance.