Student Loan Interest Deduction Calculator
Calculate your above-the-line student loan interest deduction and the resulting tax savings.
How the Student Loan Interest Deduction Works
The student loan interest deduction (IRS Section 221) allows you to deduct up to $2,500 of student loan interest paid during the tax year from your gross income. Critical features: (1) Above-the-line — reduces AGI directly, available even if you take the standard deduction. (2) Phased out by income — fully available below $85,000 MAGI single / $170,000 MFJ, phases out to zero at $100,000 single / $200,000 MFJ. (3) Per return cap, not per loan or per filer — even with 5 loans, max $2,500 total. Source: IRS Section 221, Publication 970. Last updated: May 2026.
What Counts as 'Student Loan' for the Deduction?
Any loan used for qualifying education expenses for an eligible student: tuition, fees, books, room, board, transportation. Includes federal Stafford, Perkins, PLUS, FFEL, and PRIVATE student loans (as long as you can document the loan was used for qualifying expenses). Refinanced loans still qualify if the new loan is from a qualified lender. Does NOT include: loans from related parties (family), employer educational assistance plans, qualified retirement plan loans used for education.
Married Filing Separately Disqualification
If you file Married Filing Separately, you cannot claim the student loan interest deduction — full stop, no exceptions. This is a major hidden cost of MFS for couples where one spouse has substantial student debt. Always run the math: would joint filing's loss of certain MFS-favorable strategies be offset by gaining this deduction? Usually yes if the MFS spouse paid $1,500+ interest in the year.
PSLF and Income-Driven Repayment Coordination
If you're on Income-Driven Repayment (PAYE, IBR, SAVE, ICR) or pursuing Public Service Loan Forgiveness (PSLF), the interest deduction still applies to interest you actually paid. Forgiven balances (at end of 20-25 year IDR) are NOT taxable income for federal purposes through 2025 (extended by various COVID-era and OBBB provisions). PSLF forgiveness is always tax-free. State treatment varies — California, Indiana, Mississippi, and North Carolina tax forgiven amounts.
Frequently Asked Questions
Who can claim the student loan interest deduction?
The legally obligated borrower on the loan, who paid the interest, who has MAGI under $100K single / $200K MFJ, and who is not Married Filing Separately. The deduction is 'above the line' \u2014 no itemization required. You'd lose it filing MFS or above the phase-out.
Can my parents claim the deduction if they pay my loan?
Only if they're legally obligated on the loan. If parents are co-signers, either can claim (but not both). If parents pay your loan but aren't on it, NEITHER can claim \u2014 they can't (not the borrower), you can't (didn't pay). Solution: have parents gift the money to you, then you pay the loan.
What is Form 1098-E?
The annual form your loan servicer sends showing how much interest you paid that year. If your total interest paid was $600 or more, the servicer is required to send Form 1098-E. Below $600, you may need to log into your account to find the figure. Use the 1098-E amount on Schedule 1 line 21.
Can I deduct refinanced student loan interest?
Yes, as long as the refinanced loan was from a qualified lender and used to repay the original student loan(s). The refinanced loan retains its 'student loan' status for deduction purposes. SoFi, Earnest, CommonBond, and most major refi lenders all qualify.
Is forgiven student loan debt taxable?
Federally NOT taxable through 2025 (and likely 2026 pending). PSLF forgiveness is always tax-free. IDR forgiveness after 20-25 years is currently tax-free through end of 2025 per COVID-era ARP Act. After 2025, normal treatment may resume (taxable). State treatment varies \u2014 California, Indiana, Mississippi, North Carolina currently tax forgiveness.
Is the student loan interest deduction worth maxing out?
For most borrowers, yes. A $2,500 deduction at 22% federal saves $550. At 32% saves $800. Plus state tax (often). The deduction is automatic if you paid $2,500+ in interest. No special action required beyond entering the 1098-E amount in tax software.