Enter your loan balance, rate, income, and family size to compare the standard payment against an estimated income-driven repayment amount.
Income-driven repayment (IDR) sets your federal student loan payment as a percentage of your discretionary income rather than a fixed amortized amount tied strictly to your balance and term — so the payment rises and falls with your income and family size. Current federal plans include SAVE, PAYE, and IBR, among others, each using a slightly different discretionary-income formula and percentage.
A lower monthly payment based on income can stretch out how long interest keeps accruing on your balance, and in some cases the IDR payment may not even cover the interest generated that month, allowing the balance to grow rather than shrink. The tradeoff is affordability today versus total cost over the full life of the loan — which is exactly why comparing the two numbers side by side matters.
Many income-driven plans forgive any remaining balance after 20 to 25 years of qualifying payments, with the exact timeline depending on the specific plan and when the loan was originally borrowed. These rules are subject to ongoing legislative and legal changes, so always confirm the current terms directly with your loan servicer or at studentaid.gov rather than relying on any fixed number.
You apply through your loan servicer or directly at studentaid.gov, typically by providing income documentation such as a recent tax return or pay stubs. Most borrowers can switch plans or recertify their income annually as their circumstances change, so it's worth revisiting the choice periodically rather than treating it as permanent.
Worked example: a $40,000 loan at 6% has a standard 10-year payment of $444.08 a month. For a single borrower (family size 1) earning $45,000 AGI, the 2024 poverty guideline base is $15,060, so discretionary income is 45,000 − (15,060 × 2.25) = $11,115, and the estimated IDR payment at 10% of discretionary income is $92.63 a month — a savings of $351.46 a month, though likely at the cost of more total interest over a longer repayment period.
Just want a straightforward standard payment estimate? See the Student Loan Calculator.