Student Loan Calculator
Calculate your student loan payment and see how much time and interest an extra monthly payment can save.
Example student loan results
How this calculator works
The standard payment uses the usual loan formula for your balance, rate and term. With an extra payment, the new payment is the standard payment plus the extra, and we calculate how many months it takes to reach zero. Income-driven plans and forgiveness programs work differently and are not included.
FAQ
Do extra payments go to principal?
Usually, if you tell your servicer to apply them to principal. Check with your servicer.
Does this work for federal and private loans?
Yes for standard fixed-rate repayment. Income-driven plans are not covered.
Is the interest deductible?
Some student loan interest may be deductible, with income limits. Check IRS rules.
Rates and limits last updated: October 2026. This is an estimate for general information only, not financial, tax or legal advice.