RAP vs IBR: which should you actually pick?
For most exiting SAVE borrowers this is the real decision — Standard is only for people who can comfortably pay the loan off. Here's how the two income-driven plans differ, and the five questions that decide it.
Last reviewed: August 2026
The head-to-head
| RAP | IBR | |
|---|---|---|
| Payment formula | 1–10% of total AGI ÷ 12, − $50 per dependent | 10% of income above 150% of poverty line (15% if you first borrowed before July 2014) |
| Minimum payment | $10/mo — never $0 | Can be $0 with low income |
| Forgiveness | 30 years (360 payments) | 20 years new IBR / 25 years old IBR |
| Prior IDR payments count? | Yes — months in qualifying repayment carry over | Yes |
| Balance growth | Impossible — unpaid interest waived + $50 principal match | Possible — unpaid interest accrues if payment < interest |
| PSLF eligible | Yes | Yes |
| Spouse income (filing separately) | Excluded | Excluded |
| Payment cap | None — 10% of AGI even at high income | Capped at your 10-year Standard payment |
Question 1: How close are you to a forgiveness finish line?
This is the biggest one. If you've already got 10–15 years of qualifying IDR payments behind you, IBR's 20/25-year clock could forgive your balance a decade sooner than RAP's 30-year clock. A borrower with 13 years of credit picks IBR and is 7 years from forgiveness; on RAP they'd be 17 years out. Check your official payment count on StudentAid.gov — it's the single most valuable number in this decision.
Question 2: Is your payment lower on RAP or IBR?
Rules of thumb that fall out of the math:
- Low income, no dependents: IBR often wins on payment (can be $0; RAP's floor is $10 — trivial, but IBR's protected income means $0 until ~$24k AGI).
- Low-to-middle income with kids: RAP usually wins. The $50-per-dependent deduction is worth more than IBR's bigger poverty-line protection at many family sizes.
- Middle income, single: close race — run the numbers. At $55k AGI, RAP ≈ $229 vs new-IBR ≈ $259. At $75k, RAP ≈ $438 vs IBR ≈ $426. It flips around the bracket edges.
- High income: IBR's cap at the 10-year Standard payment protects you; RAP's 10% of total AGI does not. High earners rarely want either — Standard is usually cheaper overall.
Don't guess — the calculator does the exact bracket math in five seconds.
Question 3: Are you going for PSLF?
Both plans qualify. Strategy: pick whichever gives the lowest monthly payment, because after 120 qualifying payments the rest is forgiven tax-free — every dollar you didn't pay is a dollar forgiven. Your 20-vs-30-year timeline doesn't matter for PSLF; only the 10-year mark does.
Question 4: Would your balance grow on IBR?
If your IBR payment is below monthly interest (common at lower incomes with larger balances), your balance climbs on IBR while it would shrink on RAP — up to $600/year of guaranteed principal reduction from the match. If you might leave IDR someday (marriage, income jump, refinance), an IBR balance that grew for years is a real cost, not a paper one.
Question 5: Do you value flexibility later?
One asymmetry worth knowing: switching between plans remains possible, but the old plans are disappearing (PAYE/ICR sunset by July 2028) and IBR is the only legacy IDR plan that survives long-term. RAP is the future default. If you're undecided and mid-career, IBR keeps the earlier forgiveness clock alive; you can generally still move to RAP later, while new legislation could tighten IBR access.
The short version
- Lots of prior IDR years? → IBR, chase the earlier forgiveness.
- Parent with modest income? → RAP is probably cheaper monthly, and your balance shrinks.
- PSLF? → whichever is lower monthly. Just stay in a qualifying plan.
- High earner, no forgiveness play? → neither. Standard (or aggressive paydown) costs least.
- Do nothing? → you get auto-enrolled in Standard and your payment may triple. Don't do nothing.