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Married filing separately on RAP or IBR

For many couples it’s the biggest saving on the way out of SAVE, and the one fewest people calculate.

By the SAVE Plan Deadline editorial team · Updated

Short version: on both RAP and IBR, filing your taxes separately leaves your spouse’s income out and can cut your payment a lot. In exchange, filing separately usually costs more in taxes. The right call comes from comparing the two numbers.1

A worked example

Fictional couple: $120,000 joint AGI, $45,000 of it earned by the borrower; one child; $60,000 owed at 6.5%; the spouse has no federal loans.

  • Filing jointly, the lowest payment would be $659 a month (RAP $950, IBR $659).
  • Filing separately, it drops to $100 a month (RAP $100, IBR $105).
  • Difference: up to $6,702 a year in payments.

What filing separately costs

Filing separately can raise the household’s tax and rules out some breaks. For example, you can’t take the student loan interest deduction (up to $2,500) if you file as married filing separately.2 In community-property states the rules for splitting income are different. Before you decide, ask a tax preparer for the tax difference and compare it with the payment savings.

If you both have loans

If you file jointly and both have federal loans, the household payment is calculated on the joint AGI and split by what each of you owes. Our calculator does this when you enter your spouse’s balance.

Run your case

Choose "Married filing jointly" and enter your own AGI: you’ll see how much filing separately could save you.

Your numbers

Five quick answers. Nothing you type leaves this page.

$

Form 1040, line 11a on 2025 returns (line 11 on 2024). Filing jointly? Use the joint AGI.

$

All Direct Loans, from your studentaid.gov dashboard.

Children or others on your tax return.

Full-time for a government or nonprofit employer.

Refine your estimate: interest rate, state, loans before 2014, payments made
%

Not sure? Leave 6.5%.

Decides whether IBR takes 10% or 15%.

Optional. Months counted so far.

Where do I find my AGI? Form 1040 for 2025: adjusted gross income (AGI) is on line 11a

Your three lanes

Showing an example borrower: $55,000 income, single, $38,000 at 6.5%. Enter your numbers to see yours.

Lowest payment

RAP

Repayment Assistance Plan

$229/mo

Length
Forgiven after 30 yrs
Counts toward PSLF
Yes
Can switch later
Never back to IBR
Deadline to choose
Open any time

IBR

Income-Based Repayment

$259/mo

Length
Forgiven after 20 yrs
Counts toward PSLF
Yes
Can switch later
Yes, to RAP
Deadline to choose
Before July 1, 2028

Do nothing

Standard plan, assigned automatically

$431/mo

Length
Paid off in 10 yrs
Counts toward PSLF
Yes
Can switch later
Yes
Deadline to choose
Automatic after your deadline

Or $331/mo on Tiered Standard (15 yrs, no PSLF credit).

Estimates from the 2026 federal formulas. Your servicer calculates the official amount.

NEXT EXIT

Your exact plan, in writing

$29 one time

Which plan to pick and why, what you’ll pay in total, whether filing separately saves you money, PSLF, the steps on studentaid.gov, and ready letters if your servicer gets it wrong.

See the report

14-day money-back guarantee. Switching is free at studentaid.gov: we sell clarity, never the paperwork.

Sources

  1. Repayment Assistance Plan (RAP) explained Student Loan Planner
  2. Topic no. 456, Student loan interest deduction Internal Revenue Service · Official source