The US income-driven repayment landscape has been rebuilt over eighteen months, and the part that matters most is not the new plan itself. It is the set of dates that will make a decision for you if you do not make one yourself.

The three dates: 1 July 2026 — RAP became available, and is the only IDR plan for loans taken from that date. 1 July 2027 — no new enrolments into PAYE. 1 July 2028 — PAYE and ICR sunset permanently, and borrowers still in them are moved to IBR or RAP. Default placement is RAP.

How the ground shifted

SAVE no longer exists. A federal appeals court judgment on 10 March 2026 vacated the 2023 rule that created it, ending the plan for everyone who had enrolled. That removed what had been the most generous option for a large number of borrowers, and forced a migration that is still working through the system.

RAP — the Repayment Assistance Plan — arrived on 1 July 2026 under the FY2025 reconciliation law. For loans disbursed on or after that date it is the only income-driven option. For older Direct Loans it is one choice among several, which is where the decision actually lies.

Why the default matters so much

We computed both plans across every income from $0 to $300,000 and twenty household types. The full study is here, and the summary is uncomfortable for anyone about to be auto-enrolled:

RAP produced the lower monthly payment in three of the twenty household types — and never by more than $50.50 a month. IBR won the other seventeen, and by as much as $554.50.

The mechanism is structural rather than incidental. IBR calculates payments on discretionary income — what remains after 150% of the federal poverty guideline for your household size is set aside. RAP calculates on total adjusted gross income, with a smaller per-dependent offset. Above roughly $100,000 the gap between the two settles at a constant: 1.5 × the poverty guideline × 10% ÷ 12.

Because RAP does not shelter a poverty-line amount before applying its rate, larger households are hit hardest — the poverty guideline rises with household size, so the amount IBR protects and RAP does not grows with every dependent.

Where RAP is genuinely better

It would be wrong to read this as "RAP is bad". It is better in specific, identifiable cases and those cases are worth knowing.

Very low incomes. RAP has a $10 minimum payment and its percentage scale starts at 0% below $10,000 of AGI. For a borrower earning very little, RAP can produce a lower payment than IBR's discretionary-income formula.

Interest treatment. RAP waives unpaid interest each month, so balances do not grow while you make qualifying payments. IBR has no equivalent subsidy after its limited initial period. A borrower who expects to be on an IDR plan for the full term, never paying the loan off in full, may prefer the plan that stops the balance compounding — even at a slightly higher monthly payment.

Forgiveness timeline. RAP forgives after 30 years. IBR forgives after 20 or 25 depending on when you borrowed. That is a point against RAP for most, but interacts with the interest waiver in ways that depend on your balance trajectory.

PSLF is the case where the arithmetic inverts

If you are pursuing Public Service Loan Forgiveness, the logic reverses entirely. You are aiming for 120 qualifying payments and then discharge, so the lowest possible monthly payment is the goal — every rupee, or dollar, paid above the minimum is money you did not need to pay.

Both RAP and IBR are PSLF-qualifying plans. So the choice reduces to whichever produces the smaller monthly payment for your circumstances, and for most borrowers our analysis says that is IBR. Run both before your employer certification, not after — our PSLF calculator projects the remaining qualifying payments.

What to do, and when

The one-line version: doing nothing is a choice, and on 1 July 2028 it selects RAP. For most borrowers our analysis found that is the more expensive outcome — by up to $554.50 a month. Deciding actively costs an hour. Deciding passively can cost considerably more than that.

Compare RAP against IBR → Read the full study PSLF Calculator