TopToolsAiEstimate your monthly US student loan payment and total interest paid, based on your loan balance, interest rate, and repayment term. A $40,000 loan at 6% interest over a standard 10-year term works out to roughly $444 a month, with total interest over the life of the loan adding up to about $13,300.
Last updated: 1 Sep 2026
How to use USA Student Loan Repayment Calculator
- Enter your loan balance, interest rate, and monthly payment.
- Click "Calculate" to see your payoff time and total interest paid.
Frequently asked questions
Does this factor in income-driven repayment plans?
No — this is a standard fixed-payment amortization. Income-driven plans calculate payments differently based on your income.
Can I see how much interest I'll pay in total?
Yes, the total interest over the full loan term is shown alongside your monthly payment.
Does this apply to federal or private loans?
The math works the same for both — just enter your actual balance and rate, whichever type of loan you have.
What happens if I refinance to a lower rate?
A lower rate reduces total interest paid, but refinancing federal loans with a private lender means losing federal protections like income-driven plans and forgiveness programs.
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