How are payments recalculated under the new repayment rules?

Last year, a quick income update cut my payment by half after I recertified.

Recalculations use your updated income, family size, and loan balance to compute discretionary income, then set the payment as a fixed percentage of that amount. The exact percentage and thresholds vary by plan. Recertification is annual or triggered by income changes, and changes take effect in the next billing cycle.

From helping borrowers navigate this stuff, I’ve seen the pattern play out: payments are recalculated whenever income or family size changes and at least annually through recertification. In practice, most programs use an income-driven framework: you submit updated income data and household size, the system recalculates your discretionary income, and the payment is set as a fixed percentage of that discretionary income for the coming period. Recalculation typically happens on your recertification date, with changes taking effect the next bill cycle. Inputs usually include adjusted gross income, family size, and the federal poverty guideline for your household; some plans also factor in loan type and capitalized interest. If your income rises, payments go up; if it falls or you’re between jobs, payments drop. Capitalization rules still bite: unpaid interest can be added to principal during deferment or under certain plans, lengthening your payoff. To stay on top, file recertifications on time, report life changes promptly, and run a quick check after you’re informed of the new payment.