Short Answer
For tax year 2026, the student loan interest deduction under IRC §221 lets you subtract up to $2,500 of interest you paid on qualified student loans as an above-the-line adjustment on Schedule 1 (Form 1040) line 21. You do not have to itemize. The full deduction is available if MAGI is at or below $85,000 (single/HOH/QSS) or $175,000 (MFJ). The deduction phases out across $85,000-$100,000 (single/HOH/QSS) or $175,000-$205,000 (MFJ) and is fully eliminated above those upper bounds. For 2025 the MFJ phase-out is $170,000-$200,000; the single/HOH/QSS range was unchanged at $85,000-$100,000. Married filing separately taxpayers cannot claim the deduction under §221(e)(2). Taxpayers who can be claimed as a dependent on someone else's return are barred under §221(c). Only the legally obligated borrower can deduct - though the IRS constructive payment rule allows interest paid by a parent on a non-dependent child's loan to be deducted by the child.
2026 and 2025 Student Loan Interest Deduction Parameters
IRC §221 Parameters by Tax Year and Filing Status
| Parameter | Tax Year 2026 | Tax Year 2025 |
|---|
| Maximum deduction (all statuses) | $2,500 | $2,500 |
| Single / HOH / QSS phase-out start | $85,000 | $85,000 |
| Single / HOH / QSS phase-out end | $100,000 | $100,000 |
| Single / HOH / QSS phase-out width | $15,000 | $15,000 |
| MFJ phase-out start | $175,000 | $170,000 |
| MFJ phase-out end | $205,000 | $200,000 |
| MFJ phase-out width | $30,000 | $30,000 |
| MFS | Ineligible under §221(e)(2) | Ineligible under §221(e)(2) |
| Form 1098-E reporting threshold | $600 interest paid | $600 interest paid |
| Schedule 1 line | Line 21 | Line 21 |
| Above-the-line / itemized | Above-the-line (Schedule 1) | Above-the-line (Schedule 1) |
The MFJ phase-out moved up by $5,000 from 2025 to 2026 (start) and another $5,000 at the upper bound, reflecting inflation indexing under IRC §221(b)(2)(C). The single/HOH/QSS phase-out range was unchanged from 2025 to 2026 because the IRS rounded the inflation-adjusted figures to the same $5,000 increment. The $2,500 maximum is not inflation-indexed and has been fixed since the deduction was made permanent by TCJA (P.L. 115-97). OBBBA (P.L. 119-21, signed July 4, 2025) did not modify §221.
How the Student Loan Interest Deduction Calculation Works
The §221 deduction follows a four-step computation. Each step is hard-coded into the Schedule 1 line 21 worksheet in the Form 1040 Instructions and Pub 970 Worksheet 4-1. For full eligibility rules and qualified loan definitions, see our Student Loan Interest Deduction Guide.
Step 1: Tentative Deduction Confirmed
Tentative Deduction = min($2,500, Total Interest Paid on Qualified Student Loans). The $2,500 cap is per return (not per loan and not per borrower). If you and your spouse file MFJ and both pay interest on separate loans, your combined deduction is still capped at $2,500. If you paid $4,000 of interest in the year, your tentative deduction is $2,500.
Step 2: Hard Eligibility Bars Confirmed
Two statutory bars zero out the deduction regardless of income or interest paid:
- MFS Bar (§221(e)(2)). Married filing separately taxpayers cannot claim the deduction at all.
- Dependent Bar (§221(c)). If you (or your spouse if MFJ) can be claimed as a dependent on someone else's return, the deduction is barred - even if that other person does not actually claim you. The bar attaches to claimability, not actual claim.
Additionally, the loan must be a qualified student loan under §221(d)(1) (solely for qualified higher education expenses for taxpayer/spouse/dependent at time of loan) and the taxpayer must be legally obligated on the loan.
Step 3: MAGI Phase-Out Confirmed
Phase-out applies across a $15,000 range (single/HOH/QSS) or $30,000 range (MFJ). Below the lower threshold: full deduction. Above the upper threshold: $0 deduction. Within the range, the reduction is proportional.
Formula: Excess MAGI = max(0, MAGI − Lower Threshold). Reduction Fraction = min(1, Excess MAGI ÷ Phase-Out Range Width). Phase-Out Reduction = Tentative Deduction × Reduction Fraction. Allowed Deduction = Tentative Deduction − Phase-Out Reduction.
Note on MAGI circularity: MAGI for §221 = AGI + foreign exclusions + the §221 deduction itself added back. The Schedule 1 line 21 worksheet handles this by computing the deduction with MAGI before any §221 reduction, so the deduction does not phase itself out further by reducing AGI. For most filers without foreign exclusions, MAGI ≈ AGI plus the deduction claimed (which is what you want).
Step 4: Tax Savings at Marginal Rate Confirmed
The deduction reduces AGI dollar-for-dollar. Federal income tax savings = Allowed Deduction × Marginal Federal Rate. A taxpayer in the 22% bracket who claims the full $2,500 saves $550 in federal income tax. Because the deduction reduces AGI (not just taxable income), it can also reduce state income tax in conforming states, push the taxpayer below an income threshold for other AGI-dependent benefits (PTC, EITC AGI cap, IRA deductibility), and reduce the §221 phase-out itself slightly in iterative passes - though the IRS worksheet does not require the iteration.
MAGI Phase-Out Walkthrough
The MAGI phase-out reduces the tentative $2,500 deduction proportionally within the phase-out range. The table below shows a Single filer with $2,500 of interest paid across the 2026 phase-out range. MFJ filers replace $85K-$100K with $175K-$205K and the $15K range with $30K.
2026 Phase-Out Examples (Single Filer, $2,500 Interest Paid)
| MAGI | Excess MAGI | Reduction Fraction | Reduction | Allowed Deduction |
|---|
| $70,000 | $0 (below threshold) | 0% | $0 | $2,500 |
| $85,000 | $0 (at threshold) | 0% | $0 | $2,500 |
| $88,000 | $3,000 | 20% | $500 | $2,000 |
| $92,500 | $7,500 | 50% | $1,250 | $1,250 |
| $97,000 | $12,000 | 80% | $2,000 | $500 |
| $100,000+ | $15,000+ | 100% | $2,500 | $0 (eliminated) |
A Single filer whose MAGI is exactly $92,500 - midway through the phase-out - gets exactly half the deduction. The same arithmetic applies for MFJ filers using $175K-$205K (2026) or $170K-$200K (2025): MFJ midpoint of $190K (2026) or $185K (2025) yields $1,250 allowed. Note that the phase-out reduction is on the tentative deduction (the lesser of $2,500 or interest paid), not on the actual interest amount. A taxpayer who paid only $400 of interest has a $400 tentative deduction; the phase-out reduces THAT $400, not $2,500.
Frequently Asked Questions
What is the student loan interest deduction for 2026?
The student loan interest deduction under IRC §221 lets you subtract up to $2,500 of student loan interest you paid during 2026 from your gross income as an above-the-line adjustment on Schedule 1 line 21. You do not have to itemize. The full deduction is available if your modified adjusted gross income (MAGI) is at or below $85,000 (single, head of household, or qualifying surviving spouse) or $175,000 (married filing jointly). The deduction phases out across $85,000-$100,000 (single/HOH/QSS) or $175,000-$205,000 (MFJ), and is completely eliminated above $100,000 single/HOH/QSS or $205,000 MFJ. Married filing separately taxpayers cannot claim the deduction. Taxpayers who can be claimed as a dependent on someone else's return also cannot claim it.
What is the 2025 student loan interest deduction MAGI phase-out?
For tax year 2025 (per Rev. Proc. 2024-40), the $2,500 maximum deduction begins to phase out for single, head of household, or qualifying surviving spouse filers when MAGI exceeds $85,000 and is completely eliminated at $100,000. For married filing jointly, the phase-out runs from $170,000 to $200,000 MAGI. The 2025 single/HOH/QSS phase-out is identical to the 2026 phase-out (both start at $85,000 and end at $100,000), but the MFJ phase-out moved from $170,000-$200,000 in 2025 to $175,000-$205,000 in 2026 per Rev. Proc. 2025-32 §4.29. The $2,500 maximum and the MFS bar apply to both years.
Is the student loan interest deduction above-the-line or itemized?
The student loan interest deduction is above-the-line. You claim it on Schedule 1 (Form 1040) line 21 as an adjustment to income. You do not need to itemize on Schedule A to take it - it reduces your AGI directly. This makes it valuable for taxpayers who take the standard deduction (which is most filers). The above-the-line treatment also means the deduction reduces your AGI, which can help with other AGI-dependent thresholds like the medical expense floor under §213, the SALT cap, and the §221 phase-out itself (though the §221 worksheet adds the deduction back to compute MAGI to avoid circularity).
Can married filing separately taxpayers claim the student loan interest deduction?
No. Under IRC §221(e)(2), married filing separately taxpayers cannot claim the student loan interest deduction. This is a hard statutory bar that applies regardless of income, interest paid, or who is on the loan. Separated spouses who want to preserve the deduction need to either file MFJ or qualify for head of household status under IRC §7703(b) by living apart for the last six months of the tax year while maintaining a household for a qualifying child. A taxpayer who files MFS and claims §221 on Schedule 1 will have the deduction disallowed on matching review.
Can I deduct student loan interest if I am claimed as a dependent?
No. Under IRC §221(c), you cannot claim the student loan interest deduction if you (or your spouse if filing jointly) can be claimed as a dependent on someone else's return - even if that person does not actually claim you. The legal obligation rule reinforces this: only the person legally obligated on the loan can deduct the interest, but if that person is a claimable dependent, the deduction is barred entirely. The deduction does not transfer to the parent unless the parent is legally obligated on the loan. The most common pattern: a recent college graduate who lives with parents post-graduation. If the parents could claim the graduate as a qualifying child (under age 24 + full-time student + support test) or qualifying relative, the graduate cannot deduct interest on their own student loans.
What if my parent pays my student loan interest?
Per IRS Publication 970, when someone other than the legally obligated borrower pays the interest, the payment is treated as if the lender first paid the borrower (creating a non-taxable gift) and then the borrower paid the lender. So if your parent pays $2,000 of interest on a loan you are legally obligated on, and you are NOT claimable as a dependent on the parent's return, you can deduct up to $2,500 (or the $2,000 paid, whichever is less) on your own return - even though you did not write the check. The parent cannot deduct interest on a loan they are not legally obligated on. This constructive payment rule is critical for recent graduates whose parents help with payments. The parent gets no deduction; the child does.
What is a qualified student loan for §221 purposes?
Under IRC §221(d)(1), a qualified student loan is a loan you took out solely to pay qualified higher education expenses for yourself, your spouse, or a person who was your dependent when you took out the loan. The expenses must have been paid or incurred within a reasonable period of time before or after the loan. The student must have been enrolled at an eligible educational institution (Title IV institution under the Higher Education Act). Federal student loans (Direct Loans, FFEL, Perkins), private student loans, and refinanced student loans qualify - as long as the loan was used solely for qualified higher education expenses. Mixed-use loans (where you used the proceeds for non-education purposes) do not qualify. Loans from related parties under IRC §267(b) or §707(b)(1) and loans from a qualified employer plan are explicitly excluded.
What is Form 1098-E and when do I get one?
Form 1098-E (Student Loan Interest Statement) is issued by your loan servicer to report student loan interest you paid during the year. You will receive a 1098-E if you paid $600 or more of interest on a qualified student loan in the tax year. If you paid less than $600 of interest, the servicer is not required to issue a 1098-E - but you can still deduct the interest if you can substantiate the amount from your servicer account or payment records. The 1098-E reports interest in Box 1, plus loan origination fees and capitalized interest that may be deductible per Notice 2004-58. The 1098-E is informational only - it is NOT attached to your return - but the IRS matches the amount you claim on Schedule 1 line 21 to the aggregate 1098-Es reported under your SSN.
Does an origination fee count as deductible interest?
Yes. Per IRS Notice 2004-58 and Pub 970, loan origination fees paid on a qualified student loan are treated as interest for §221 purposes - but they are deducted over the life of the loan, not all in the first year. Voluntarily prepaid interest also counts. Capitalized interest (interest added to your principal during deferment, then accruing additional interest) is deductible in the year you actually pay it, even though it represents interest from an earlier period. Late payment fees, collection fees, and processing fees do NOT count as interest. The Form 1098-E usually splits Box 1 to show whether loan origination fees and capitalized interest are included.
Did OBBBA change the student loan interest deduction for 2026?
No. The One Big Beautiful Bill Act (P.L. 119-21, signed July 4, 2025) did not modify IRC §221. The $2,500 maximum, the MFS bar under §221(e)(2), the dependent bar under §221(c), and the phase-out structure remain unchanged. Rev. Proc. 2025-32 §4.29 set the 2026 MFJ phase-out at $175,000-$205,000 (up from $170,000-$200,000 in 2025 per Rev. Proc. 2024-40); the single/HOH/QSS phase-out was unchanged at $85,000-$100,000 for both years. Separately, OBBBA §70124 extended the §108(f)(5) exclusion for discharged student loan debt through 2028, but that exclusion governs loan forgiveness taxability, not §221 interest deductibility.
What to Do Next
If You Are a Recent Graduate Below the Phase-Out
Default to taking the deduction up to the lesser of $2,500 or your actual interest paid. Confirm you are not claimable as a dependent on your parent's return - if you graduated under age 24 and lived at home for more than half the year, run the dependency tests carefully. Use the Filing Status Calculator to confirm whether HOH or Single applies.
If Your MAGI Is Near the Phase-Out
Every $1,000 of AGI reduction inside the phase-out range recovers $167 of the deduction (single/HOH/QSS) or $83 (MFJ). Maximize traditional 401(k) contributions, HSA contributions (see the HSA Contribution Calculator), and traditional IRA deductibility where eligible. These above-the-line deductions stack and can recover several hundred dollars of federal tax savings.
If You Are Married Filing Separately
MFS = zero deduction under §221(e)(2). Model the MFJ vs MFS comparison both with and without §221. If MFS is required for liability reasons (innocent spouse, support order), the deduction is forfeited. Otherwise, file MFJ - or qualify for HOH under §7703(b) if separated for more than half the year with a qualifying child.
If Your Parents Are Helping with Payments
If you are not a claimable dependent on their return, the constructive payment rule lets you deduct parent-paid interest as your own. Document the payment as a gift via a simple letter or memo. The annual gift exclusion ($19,000 per parent per recipient in 2026) covers nearly any reasonable interest payment. Read the full guide for the substantiation pattern.