IBR vs PAYE vs RAP: Which Repayment Plan Saves You the Most?

Now I'll write the article.

If you graduated with federal student loans and tried to figure out income-driven repayment, you've probably stared at a government acronym soup — IBR, PAYE, REPAYE, SAVE, RAP — and wondered if you need a law degree just to pick a payment plan. You don't. This guide breaks down the three plans most borrowers are choosing between right now: IBR, PAYE, and the newer RAP (Repayment Assistance Plan). We'll show you the math, who qualifies for what, and which plan actually saves you the most money over time.

The Quick Version: What Each Plan Actually Is

All three plans are income-driven repayment (IDR) options for federal student loans. That means your monthly payment is tied to what you earn — not what you owe — and anything left over after a set number of years gets forgiven.

The core difference is how they calculate your payment, who can enroll, and how long until forgiveness kicks in.

IBR (Income-Based Repayment) — the oldest and most widely available of the three. Your payment is 10% of your discretionary income if you borrowed after July 1, 2014, or 15% if you borrowed before that date. Forgiveness after 20 or 25 years depending on when you borrowed.

PAYE (Pay As You Earn) — capped at 10% of discretionary income, with a hard ceiling so payments can never exceed what you'd owe on the standard 10-year plan. Forgiveness after 20 years. The catch: strict eligibility requirements, and as of late 2023, PAYE is no longer open for new enrollment.

RAP (Repayment Assistance Plan) — the proposed replacement for the now-defunct SAVE plan. RAP uses a tiered income table rather than a flat percentage, which means lower earners pay nothing, and higher earners gradually pay more. Still navigating regulatory and legal uncertainty as of mid-2025, but it's the plan most likely to replace SAVE if courts and Congress allow it.

How Your Monthly Payment Is Calculated

IBR Calculation

IBR uses "discretionary income," which the Department of Education defines as your adjusted gross income (AGI) minus 150% of the federal poverty guideline for your family size.

For a single borrower earning $55,000 in 2025 (approximate poverty line: $15,650):

150% of FPL = $23,475
Discretionary income = $55,000 − $23,475 = $31,525
IBR payment (new borrower, 10%) = $31,525 × 10% ÷ 12 = ~$263/month

If you borrowed before July 1, 2014:

Same discretionary income: $31,525
IBR payment (15%) = $31,525 × 15% ÷ 12 = ~$394/month

PAYE Calculation

PAYE uses the exact same discretionary income formula — AGI minus 150% of FPL — at 10%. So for that same $55,000 earner, PAYE = ~$263/month, identical to new-borrower IBR.

The meaningful difference is the payment cap: under PAYE, your payment can never exceed what you'd pay on a standard 10-year plan. IBR has a similar cap only for new borrowers. This matters if your income grows significantly — under PAYE, you're protected from ballooning payments even if you later earn a high salary.

The other difference: PAYE is only available if you had no outstanding federal loans before October 1, 2007, and you received at least one new direct loan after October 1, 2011. Many borrowers don't qualify. And since new enrollment closed, this plan is effectively a relic for current enrollees.

RAP Calculation

RAP works differently — it uses a graduated table based on income brackets, not a flat percentage of discretionary income.

Under the proposed RAP structure:

Income Level	Monthly Payment
Below 275% FPL (~$43,000 for single)	$0
275%–450% FPL (~$43,000–$70,000)	1%–8% of AGI, scaled by bracket
Above 450% FPL (~$70,000+)	Gradually increases toward standard equivalent

For our $55,000 earner, that income falls between 275% and 450% FPL, so they'd owe somewhere in the 4%–6% range — approximately $183–$275/month, potentially lower than IBR.

For someone earning $38,000 — below the $43,000 threshold — RAP payment: $0/month. Under IBR, they'd still owe about $146/month.

Real-World Example: $45,000 in Loans, $52,000 Salary

Meet Jordan. Single, no kids, public school teacher with $45,000 in federal direct loans at 6% interest.

Standard 10-year repayment: $500/month, total paid = $60,000

IBR (new borrower):

Discretionary income = $52,000 − $23,475 = $28,525
Monthly payment = $28,525 × 10% ÷ 12 = $238/month
After 20 years: remaining balance forgiven (taxable unless PSLF applies)
Total paid over 20 years: roughly $57,120 — but interest accumulates, so the forgiven amount could be substantial

PAYE (if eligible):

Same payment: $238/month for 20 years
Cap ensures payment doesn't exceed $500/month if income rises sharply
Same forgiveness timeline

RAP (proposed):

$52,000 is between 275%–450% FPL
Estimated payment: $195–$220/month
Potentially saves Jordan $18–$43/month compared to IBR
Forgiveness after 20 years (undergraduate loans)

PSLF wildcard: If Jordan works full-time at a qualifying nonprofit or government employer and makes 120 on-time payments (10 years), the remaining balance is forgiven tax-free under Public Service Loan Forgiveness — regardless of which IDR plan they're on. In that case, lower payments under RAP or IBR mean more money in Jordan's pocket each month with the same forgiveness outcome.

The Forgiveness Timeline: 20 vs. 25 Years

Plan	Undergraduate Loans	Graduate Loans
IBR (new borrower, post-2014)	20 years	20 years
IBR (old borrower, pre-2014)	25 years	25 years
PAYE	20 years	20 years
RAP (proposed)	20 years	25 years

The five-year difference on graduate loans matters more than it sounds. On a $100,000 balance that's been accruing interest, five extra years can add tens of thousands of dollars in payments — and the forgiven amount (which is currently taxable outside of PSLF) will be larger too.

Who Qualifies for Each Plan

IBR Eligibility

IBR is the most accessible plan:

Must demonstrate partial financial hardship — your calculated IBR payment must be lower than what you'd pay on the standard 10-year plan
Available for Direct Loans and FFEL program loans
Parent PLUS loans do not qualify (and can't be included in an IDR plan unless consolidated into a Direct Consolidation Loan)

PAYE Eligibility (Closed to New Enrollees)

If you're already on PAYE, you can stay. But as of 2023, the plan closed to new applicants. To have enrolled originally, you needed:

No outstanding federal loan balance before October 1, 2007
A qualifying Direct Loan disbursed after October 1, 2011
Demonstrable partial financial hardship

RAP Eligibility (Proposed)

RAP is designed to be broader than PAYE:

Open to all Direct Loan borrowers
No partial financial hardship requirement
Parent PLUS loans excluded (same as IBR and PAYE)
Graduate borrowers get a 25-year forgiveness timeline rather than 20

The Tax Bomb Problem

Outside of PSLF, forgiven balances under IBR, PAYE, and RAP are treated as taxable income in the year of forgiveness. If you have $60,000 forgiven in year 20, you could owe $13,000–$20,000 in federal taxes in that single year, depending on your tax bracket.

There's currently a federal tax exemption in place through 2025 under the American Rescue Plan. What happens after that is politically uncertain — it may extend, it may not. This is worth tracking if you're on a 20-year forgiveness track.

The only safe harbor: PSLF forgiveness is permanently tax-free by statute.

Which Plan Actually Saves You More?

There's no universal winner — it depends on three variables:

1. Your income trajectory. If you expect your salary to grow significantly (say, from $45,000 to $110,000 over 20 years), PAYE's hard payment cap is a real advantage. IBR without the cap could push your payments well above what's comfortable in your peak earning years.

2. Whether you have graduate debt. RAP's 25-year timeline for grad loans means more total payments compared to IBR's 20-year track for post-2014 borrowers. For grad-heavy debt loads, IBR can win.

3. Whether PSLF is in your future. If you're working toward PSLF, the lowest possible monthly payment is the winning move — more forgiveness, same 10-year timeline. That historically pointed to PAYE or REPAYE. Under RAP's proposed structure, payments for many mid-income borrowers would be lower than IBR — making RAP a potential PSLF optimizer.

Rule of thumb:

Low income (under ~$43,000) → RAP wins — $0 payment vs. something under IBR
Mid income ($43,000–$75,000), no PSLF → RAP or IBR are close; run the numbers for your specific salary
High income or income growth expected → PAYE's cap was valuable; IBR's cap (for new borrowers) offers partial protection
PSLF-eligible borrowers → Lowest payment plan wins; watch RAP's implementation closely

Key Takeaways

IBR is the most widely available IDR plan and remains open to new enrollees. New borrowers pay 10% of discretionary income; pre-2014 borrowers pay 15%.
PAYE is no longer available to new borrowers, but those already enrolled benefit from strict payment caps that protect against income growth.
RAP (proposed) uses a tiered income table that eliminates payments entirely for lower earners and scales gradually — a potential improvement for borrowers earning below $43,000.
All three plans use forgiveness after 20–25 years, but that forgiveness is taxable outside of PSLF.
PSLF remains the best deal in federal student loans — tax-free forgiveness after 10 years — and works with any of these IDR plans.
The student loan policy landscape is volatile. Check your loan servicer and StudentAid.gov for current enrollment status before switching plans.
Don't switch plans without running your numbers through the official Loan Simulator at StudentAid.gov.

Frequently Asked Questions

Can I switch from IBR to RAP if RAP becomes available?

Yes, generally. You can switch between IDR plans at any time. The complication: switching plans can reset certain payment counts or change how prior payments count toward forgiveness, so confirm with your loan servicer before making a move. PSLF credit for qualifying payments typically carries over regardless of which IDR plan you're on.

What happens to PAYE enrollees if the plan is phased out?

The Department of Education has not announced forced migration off PAYE for existing enrollees, but it's a real risk as the program winds down. If you're on PAYE and the plan is eliminated, you'd likely be transitioned to IBR or a successor plan. Monitor your servicer communications closely.

Is RAP actually available right now?

As of mid-2025, RAP is still in regulatory limbo. The SAVE plan — its predecessor — was blocked by federal courts. RAP was proposed as an alternative, but its rollout has been delayed by the ongoing legal and political battles over student loan policy. The safest current option for most borrowers remains IBR.

Does interest still accrue under these plans?

Under IBR and PAYE, if your monthly payment doesn't cover your accruing interest, the difference can be added to your balance — this is called negative amortization. One notable feature of the now-frozen SAVE plan was a full interest subsidy. RAP's proposed rules include a partial interest subsidy, but the specifics depend on the final regulatory language.

Will I owe taxes on forgiven student loan debt?

Potentially. The current federal tax exemption for forgiven student debt runs through the end of 2025. After that, forgiven balances could be treated as ordinary income. PSLF forgiveness is permanently excluded from federal tax. State income taxes are a separate question — some states tax forgiven debt even when the federal government doesn't. Consult a tax advisor as you approach your forgiveness window.