Choosing a repayment plan is the single most important financial decision a young physician makes. Choose correctly, and you pave the way for PSLF or efficient payoff. Choose incorrectly, and you might accidentally capitalize $40,000 of interest or disqualify yourself from forgiveness. [1]
The IDR Basics
Income-Driven Repayment (IDR) plans are designed to make federal student loan debt manageable by tying your monthly payment to your income, not your debt total.
The Golden Equation
*The "Percentage" varies by plan (10% to 20%).
*The "Poverty Deduction" varies by plan (150% to 225% of federal poverty line).
The SAVE Plan
Saving on a Valuable Education (formerly REPAYE)
SAVE is theoretically the most generous plan ever created, but it is currently embroiled in legal battles (as of 2025/2026). Assuming it survives, here is why it is usually the default choice for residents.
The Interest Subsidy
This is the killer feature. If your monthly payment doesn't cover the interest, the government waives 100% of the remaining interest. Your balance never grows.
The "No Cap" Trap
There is no ceiling on SAVE payments. If you make $500k as an attending, your payment calculates off $500k. It can easily exceed the Standard 10-Year amount.
The PAYE Plan
Pay As You Earn
PAYE is the "exclusive club" plan. You must be a "new borrower" (no loans before Oct 1, 2007) to qualify. It is being phased out for new enrollees, but if you are already in it, you can stay.
The Payment Cap
Unlike SAVE, PAYE has a Payment Cap. Your monthly payment can never exceed what you would have paid under the Standard 10-Year Plan.
Why this matters: For high-earning specialists (Neurosurgeons, Ortho, Cardio) seeking PSLF, this cap can save thousands per month in the final years of repayment.
IBR & ICR (The Dinosaurs)
These are older plans. You typically only use them if you don't qualify for SAVE or PAYE.
- IBR (Income-Based Repayment): The "Old" IBR (pre-2014 borrowers) requires 15% of discretionary income. The "New" IBR requires 10%. It usually has higher payments than SAVE.
- ICR (Income-Contingent Repayment): The most expensive plan (20% of income). The only reason to use this is if you have Parent PLUS Loans that you consolidated (it's the only IDR plan they qualify for without the "Double Consolidation" loophole).
Head-to-Head Comparison
| Feature | SAVE | PAYE | IBR (New) |
|---|---|---|---|
| Payment % | 10%* | 10% | 10% |
| Payment Cap? | NO | YES | YES |
| Interest Subsidy? | 100% | None | None |
| Spouse Income? | Excluded if MFS | Excluded if MFS | Excluded if MFS |
*SAVE is 5% for undergrad loans, 10% for grad loans (weighted average).
Tax Strategy: The Marriage Penalty
If you are married, your IDR payment depends heavily on how you file taxes.
Married Filing Jointly (MFJ)
The Pros: Lower tax rate, access to Roth IRA contributions, larger standard deduction.
The Cons: Your loan payment is calculated based on combined income. If your spouse earns $200k, your loan payment creates a massive "phantom tax" on their income.
Married Filing Separately (MFS)
The Pros: Loan payment calculates off your income only. Essential if spouse earns high income but has no loans.
The Cons: Higher tax bracket, lose student loan interest deduction, lose Roth IRA direct contribution (must use Backdoor).
Real-World Case Studies
Dr. Resident (PGY-1)
Best: SAVE- Income: $65,000
- Loan: $300,000 @ 6.5%
- Goal: PSLF
**By choosing SAVE, Dr. Resident saves over $16,000 in interest per year effectively reducing their debt load.
Dr. Attending (Cardiology)
Best: PAYE- Income: $450,000
- Loan: $200,000 @ 6.5%
- Goal: PSLF (3 years left)
**Because PAYE is capped at the standard amount, the high income does not hurt Dr. Attending. On SAVE, they would overpay by $1,200/mo.
Switching Plans: The Danger Zone
"I'll just start on SAVE and switch to PAYE later!"
Not so fast. Switching IDR plans is not like changing your Netflix subscription. It triggers administrative events.
Interest Capitalization (Legacy Rule)
Historically, leaving IBR or PAYE caused all your unpaid interest to "capitalize" (be added to your principal). New regulations (July 2023) have eliminated this for most plan switches, but always verify current rules before moving.
The "Processing Month" Forbearance
Switching plans takes 1-3 months. During this time, you are placed in "Administrative Forbearance." historically these months DID NOT COUNT for PSLF (though the new "Buyback" rule helps).
Recertification Strategy
You must prove your income every year.
When to use "Alternative Documentation" (Pay Stubs)
Usually, you link your IRS Tax Return. However, if your income has dropped significantly since you filed taxes (e.g., you transitioned from Attending to Fellow, or cut back hours), use pay stubs!
The Hack: If you use pay stubs, they look at "Gross Pay." Only use this if your current gross pay is lower than your last tax return's AGI. Otherwise, the tax return is always better because AGI includes deductions (403b, HSA) that lower your payment.
Common Questions
Which plan is best for PSLF?
Usually SAVE during residency (for the interest subsidy) and technically PAYE during practice (for the cap), BUT switching plans causes interest capitalization and admin headaches. Most doctors stick with one.
Can I switch from IBR to SAVE?
Yes, but leaving IBR specifically requires a payment of either the standard amount or $5 for one month to "exit" the plan. It's an administrative hurdle.
J.R. Dunigan, DO
•Family Medicine Physician & FounderI founded MedMoneyGuide to provide physicians with the unbiased, specialty-specific financial guidance I wish I had when starting my own career. As a practicing physician, my mission is to cut through the industry noise and empower healthcare professionals to negotiate better contracts, eliminate debt, and build lasting wealth with confidence.
Sources & Methodology
References used in this guide:
[1] Federal Student Aid. (2025). Income-Driven Repayment Plans.
Methodology: This guide breaks down complex federal regulations into actionable strategies for physicians. We synthesize official documentation and update details as new Department of Education rulings occur.
Disclaimer: This guide is for educational purposes only and does not constitute financial, legal, or tax advice. Please consult with a professional advisor regarding your specific situation.