🎓 Student Loan Calculator

Compare standard, graduated, extended, and income-driven repayment plans — see your monthly payment, total interest, and payoff timeline for each.

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Results
Monthly Payment
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Loan Balance—
Total Interest Paid—
Total Amount Repaid—
Payoff Timeline—
Interest Saved (extra pmt)—
Discretionary Income (IDR)—
Standard: M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1]
IDR: Payment = 10% × (Income − 150% FPL) ÷ 12

Income-Driven Repayment (IDR) caps payments at 10% of your discretionary income — earnings above ~150% of the Federal Poverty Level. Any balance remaining after 20–25 years may be forgiven (taxable income).