🎓 Student Loan Calculator

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

✏️
Inputs
$
%
$
$
📊
Results
Monthly Payment
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).