Does your spouse's income count toward your federal student loan payment?
Summary
On an income-driven plan, it depends on how you file taxes. A joint return means the plan uses your combined income, and a separate return means it uses only yours. If your spouse also has federal student loans, the payment figured on joint income is divided by each person's share of the combined debt.
Plan by plan
- Repayment Assistance Plan (RAP): joint income if you file jointly, your income alone if you file separately. Only the dependents on your own return count when you file separately.
- Income-Based Repayment (IBR) and Pay As You Earn (PAYE): the same joint-or-individual split. Both are closed to anyone with a loan disbursed on or after July 1, 2026.
- Income-Contingent Repayment (ICR): individual income if only one of you is on ICR, joint income if you both are. Married couples with Direct Loans can repay jointly under ICR until July 1, 2028, the date by which everyone on PAYE or ICR has to pick a new plan.
A couple with $100,000
StudentAid.gov works through this example on IBR at 10% of discretionary income. The couple has no children, lives in the contiguous 48 states, and earns $100,000 combined, $60,000 of it yours. You owe $60,000 in federal loans and your spouse owes $40,000.
| Filing status | Income used | Household IBR payment | Your payment |
|---|---|---|---|
| Joint, both have loans | $100,000 | $562.83 | $337.70 (60%) |
| Joint, only you have loans | $100,000 | $562.83 | $562.83 |
| Separate | $60,000 | n/a | $229.50 |
If your spouse enrolls in IBR too, they pay the other 40%, or $225.13. If they pick a different plan, your $337.70 stays the same.
RAP uses a flat percentage of adjusted gross income instead of discretionary income. At $100,000 the rate is 9%, which is $750 a month. At $60,000 it is 5%, or $250. StudentAid.gov says the joint figure is reduced when your spouse also has federal student loans, but it doesn't publish how the reduction is calculated.
What separate filing costs at tax time
The student loan interest deduction is off the table for a married-filing-separately return, according to the IRS. It tops out at $2,500, or at your actual interest if that was less. For 2026 it phases out between $85,000 and $100,000 of modified adjusted gross income, or $175,000 and $205,000 on a joint return. StudentAid.gov also lists the child care tax credit and the Earned Income Tax Credit among the benefits a separate return can cost you, and notes that separate filing can raise your income tax.
If you were already on an income-driven plan when you married, you don't have to wait for your annual recertification date. You can recertify early with the new family size and income.
Sources
- Federal Student Aid, studentaid.gov/articles/marriage-student-loans
- Federal Student Aid, studentaid.gov/announcements-events/big-updates/definitions
- IRS, irs.gov/taxtopics/tc456
- IRS, irs.gov/publications/p970
Written by Kaz (pen name). Figures are copied from the sources' published pages on the dates shown. We have not used these products. Corrections: contact form.