Student Loan Interest Deduction (2026)

Student loan interest: rare above-the-line break

Paying student loan interest can reduce adjusted gross income by up to $2,500 per year even if you take the 2026 standard deduction ($16,100 single, $32,200 joint). That is Schedule 1, not Schedule A—valuable for borrowers who do not itemize. Form 1098-E from servicers reports interest paid; not all 1098-E amounts qualify if loans were for non-education purposes or you are claimed as dependent.

This calculator applies the cap and income phaseout so you see deductible interest and tax savings at your marginal rate.

Stack with the education credits calculator carefully—same expenses cannot double-dip, but interest deduction coexists with tuition credits on different dollars.

$2,500 cap and phaseout

Deduct lesser of interest paid or $2,500. Modified AGI above phaseout threshold reduces deduction ratably to zero at upper limit. Single filers near six-figure MAGI and joint filers below $200,000 often still get partial or full deduction—enter MAGI in tool for 2026 thresholds from Rev. Proc.

Qualified loans and borrowers

Loans must pay qualified higher education expenses for eligible student (you, spouse, dependent while loan originated). You cannot deduct if filing status MFS (with exceptions), if someone else claims you as dependent, or if loan is from related party in disqualified cases.

Parent PLUS: parent borrower deducts on parent return if parent legally obligated. Child cannot deduct parent-paid interest on child’s obligation if child is not liable.

How to use the calculator

Step 1 — Enter 1098-E box 1 interest

Sum multiple servicers.

Step 2 — Enter MAGI and filing status

MAGI ≈ AGI for most without foreign income exclusions—tool may specify.

Step 3 — Read deductible amount and tax benefit

Benefit ≈ deduction × marginal federal rate.

Worked example (single, MAGI $70,000, $3,000 interest, 2026)

Deductible $2,500 (cap). Marginal rate 22% → ~$550 federal savings. Still owe principal; deduction softens interest cost slightly.

Same borrower MAGI $100,000 may hit phaseout—deduction partial or zero per 2026 tables.

Refinancing and consolidation

Refi with private lender still qualifies if original loans were education. Cash-out refi for non-education portion not qualified interest on excess.

Employer student loan assistance

Section 127 educational assistance and employer LRAP programs may exclude up to statutory amounts from income in qualifying years—separate from interest deduction; watch double benefit rules.

vs education credits

American Opportunity and Lifetime Learning credits reduce tax on tuition; loan interest deduction hits different line. Pay tuition with cash vs loans affects credit timing; interest deducts in years you pay interest.

Common mistakes

• Claiming interest while claimed as dependent on parent return
• Using 1098-E when loan paid non-qualified expenses
• Assuming principal payments are deductible
• Missing phaseout at moderate high incomes
• MFS filers expecting deduction when barred

Related tools

Education credits calculator, federal income tax calculator, tax refund estimator, dependent care credit calculator for young-parent stacking.

Additional planning notes for 2026

Tax software and professional preparers reconcile annual Form 1040 liability against W-2 withholding—not any single calculator snapshot. Use the interactive form above as a transparent starting point, then validate filing status, dependents, and pre-tax elections before you treat output as a filing estimate. Where this page references 2026 figures, they follow IRS Rev. Proc. 2025-32 and SSA wage base announcements unless noted otherwise.

Federal ordinary rates remain 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Employee FICA is 6.2% on wages up to $184,500 plus 1.45% Medicare on all covered wages. Additional Medicare Tax at 0.9% applies above $200,000 single / $250,000 joint / $125,000 MFS. Standard deduction amounts are $16,100 single and married filing separately, $24,150 head of household, and $32,200 married filing jointly.

State residency, local income taxes, and voluntary payroll deductions can move cash results without changing the federal concepts modeled here. When a scenario spans multiple jobs, side income, or mid-year life changes, pair this page with the federal income tax calculator, paycheck calculator, and tax refund estimator so withholding, liability, and refund expectations stay aligned.

Documentation matters at filing time: retain 1098 and 1098-E forms, charitable acknowledgments, medical receipts, mileage logs, and employer plan confirmations that support positions you claim. Rounding in browser tools may differ slightly from payroll systems that round per pay period.

Recordkeeping and next steps

Keep source documents that support inputs you enter—pay stubs, Form W-2, 1098 series forms, receipts, and employer benefit summaries. Calculators on this site show math in the open for learning; they do not e-file returns or transmit data to the IRS. When results look close to decision thresholds (itemizing vs standard deduction, credit phaseouts, or installment affordability), rerun the scenario with conservative and aggressive assumptions to see sensitivity.

If your fact pattern spans deductions and credits, run this tool first, then validate withholding with the W-4 calculator. Cap and phaseout figures can change after publication—verify against the IRS page cited in the methodology notes.

Verification checklist before filing

Before you rely on any estimate for a financial decision, reconcile these inputs against source documents: filing status on the return you will actually file, total wages from all W-2 box 1 amounts, pre-tax deferrals that reduce taxable wages, and any credits or deductions you qualify for beyond the simplified fields on this page. A single missing 1099 or an outdated W-4 at a second job can shift liability by more than rounding error in browser math.

If you itemize, confirm Schedule A components together—SALT capped at $10,000, mortgage interest limited on acquisition debt over $750,000 for post-2017 loans, medical expenses only above 7.5% of AGI, and charitable gifts within AGI-based caps. Standard deduction filers should still model above-the-line adjustments such as student loan interest up to $2,500 and HSA contributions where applicable.

Disclaimer

Educational estimate from IRS published phaseouts for 2026—not loan servicer or tax advice. Confirm 1098-E eligibility and MAGI on Form 1040 instructions.