Student loan payoff calculator

Estimate how a fixed payment and an optional extra amount could change payoff time and interest.

Change the assumptions.

  • Loan balance
  • Interest rate (%)
  • Monthly payment
  • Extra each month

Open the interactive calculator to enter values. Calculations run in your browser. Editing inputs does not change the page URL. Share calculation includes your inputs after # in the shared link. This URL fragment is not sent in the page HTTP request. Anyone with the link can read its values. Avoid sharing sensitive financial information.

A fixed payment reveals the shape of the loan.

The estimate applies the selected interest rate monthly and subtracts the fixed payment plus any extra amount until the balance reaches zero.

This is a fixed-rate payoff illustration, not federal student-loan guidance. It does not model income-driven plans, forgiveness, capitalization, deferment, subsidies, fees, or servicer rules.

Before you use the number.

Does this model federal repayment plans?

No. It models a fixed-rate balance with a fixed monthly payment. Federal and private loan terms can work differently.

What does the extra payment do?

The extra amount is added to the monthly payment in the scenario. The result shows how that changes the estimated payoff period and interest.