RAP vs IBR for physicians: which repayment plan actually wins in 2026?

If you trained before this summer, you're living through the biggest change to federal student loans in a generation. The 2025 federal law replaced the familiar income-driven plans with a new one called RAP — the Repayment Assistance Plan — that takes effect July 1, 2026. For most physicians, the practical question is simple to ask and surprisingly consequential to answer: should you be on RAP, or should you protect your access to the older Income-Based Repayment (IBR) plan?

The short version: for high-earning attendings, legacy IBR is often dramatically cheaper than RAP — but only if you first borrowed before July 1, 2026 and you don't trip the wire that strips your legacy eligibility. Here's why.

The one difference that matters most: the payment cap

Legacy IBR sets your payment at 10% of your discretionary income, but it caps that payment at what you'd owe on a standard 10-year plan. RAP has no such cap. Instead, RAP charges a percentage of your total income — scaling up to 10% above roughly $100,000 of income — with no ceiling.

For a resident earning a modest salary, the two plans produce similar low payments. But the moment you become an attending, the gap explodes. Consider a physician with around $200,000 of loans:

Why the cap flips the PSLF math too

If you're pursuing Public Service Loan Forgiveness, your goal during those 120 qualifying payments is to pay as little as possible, since the balance is forgiven tax-free at the end. The capped IBR payment means a high-earning attending often pays far less over the 10 years — and therefore has more forgiven — than they would on RAP. That's the opposite of intuition, and it's exactly the kind of thing a single-purpose calculator misses.

The trap: don't borrow again after July 1, 2026

Here's the wire to avoid. If you took out federal loans before July 1, 2026, you generally retain access to legacy plans like IBR. But taking out any new federal loan after that date can sweep all of your loans — old and new — onto RAP, permanently closing the door on the capped legacy plan. For physicians considering additional training, a fellowship loan, or consolidation, the timing of any new borrowing is now a high-stakes decision.

When RAP is actually the better choice

RAP isn't the villain. It waives unpaid interest each month, so your balance won't balloon from negative amortization, and it reduces your payment by $50 per month for each dependent child. For borrowers with lower attending incomes, larger families, or those who only began borrowing in the new regime, RAP can be the most affordable — and sometimes the only — income-driven option available.

So which one wins for you?

It comes down to four things: when you first borrowed, your balance, your projected attending income, and whether you'll work for a PSLF-qualifying employer. Those four variables interact in ways that are genuinely hard to eyeball — which is exactly why we built a free engine that runs the month-by-month math for your specific numbers and tells you the cheapest path, with the reasoning shown.

This article is educational and not financial, tax, or legal advice. The 2026 rules are still being implemented; verify details at studentaid.gov.