Student loans calculator
Student Loan Payment Calculator
The student loan calculator estimates monthly payment, payoff time and interest using balance, interest rate, repayment term and extra payments.
Calculator
Calculator
How this calculator works
The standard payment uses amortization. If extra monthly payments are added, the payoff estimate recalculates months and interest.
A borrower can test how adding $50 per month may reduce total interest and shorten payoff time.
Formula and methodology
The student loan estimate amortizes the balance and simulates payoff timing when extra payment is entered.
Blank, invalid or negative numeric entries are treated as zero to avoid broken or misleading NaN results. Dollar values are rounded for readability.
Before you use the result
- Use the estimate for planning, comparison and budgeting.
- Review official documents, lender quotes, employer payroll settings or licensed professional advice before making important financial decisions.
- State, city, employer, lender, insurance and personal rules can change the final result.
Sources and review
Last reviewed: August 8, 2026.
- Federal Student Aid loan repayment resources
See the calculator methodology and data sources pages.
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Frequently asked questions
Is the Student Loan Payment Calculator free?
Yes. It is free to use and runs in your browser.
Is this professional advice?
No. DailyToolDesk provides educational estimates only, not tax, legal, lending, investment or insurance advice.
Why can my real result be different?
Real outcomes can change because of state rules, employer settings, lender fees, credits, deductions, insurance underwriting, timing and personal circumstances.