Write off up to $2,500 of the student loan interest you paid — even if you claim the standard deduction, because it is an above-the-line adjustment to income. Enter your balance, rate, payment, and MAGI to see your deductible amount and the tax it saves, model the interest you actually pay, or explore the full MAGI phase-out range.
| Deduction Step | Amount | How It's Calculated |
|---|---|---|
| Interest paid (12 payments) | $0.00 | Sum of monthly interest |
| Qualifying interest (capped at $2,500) | $0.00 | min(interest, $2,500) |
| Phase-out limit at your MAGI | $0.00 | $2,500 × (1 − phase-out fraction) |
| Allowed deduction | $0.00 | min(qualifying, phase-out limit) |
| Marginal federal tax rate | 0% | 2025 bracket for your MAGI |
| Estimated tax saved | $0.00 | Allowed deduction × marginal rate |
Situation: Single filer, $30,000 loan at 5.5% APR, $350/month payment, MAGI of $70,000 — well below the $85,000 phase-out start.
Calculation: The 12 amortized payments contain about $1,584.73 of interest — under the $2,500 cap — so the full amount qualifies and no phase-out reduction applies. Tax saved = $1,584.73 × 22% = $348.64.
Situation: Same loan, but MAGI is $92,500 — exactly halfway between $85,000 and $100,000, so the fraction is 7,500 ÷ 15,000 = 50%.
Calculation: Limit = $2,500 × (1 − 0.50) = $1,250. Allowed = min($1,584.73, $1,250) = $1,250. Tax saved = $1,250 × 22% = $275.00, a $73.64 haircut.
Situation: A joint couple with $55,000 of loans at 6.5% paying $900/month, and MAGI of $120,000.
Calculation: Their 12 payments hold about $3,490 of interest, so qualifying interest caps at $2,500. MAGI of $120,000 is below the $175,000 MFJ start, so the full cap is allowed and tax saved = $2,500 × 22% = $550.00.
A single filer pays $900 of interest but has MAGI of $100,000 or more. At the top of the range the limit is $0, so the deduction disappears entirely.
Interest Paid = interest portion of the year's payments (Box 1 of Form 1098-E)
Phase-out Start = $85,000 (single/HOH) or $175,000 (MFJ)
Phase-out Range = $15,000 (single/HOH) or $25,000 (MFJ)
Marginal Rate = 10%, 12%, 22%, 24%, 32%, 35%, or 37%
| Taxable Income (Single) | Marginal Rate |
|---|---|
| $0 – $11,925 | 10% |
| $11,926 – $48,475 | 12% |
| $48,476 – $103,350 | 22% |
| $103,351 – $197,300 | 24% |
| $197,301 – $250,525 | 32% |
| $250,526 – $626,350 | 35% |
| Over $626,350 | 37% |
Top-of-range brackets are adjusted annually for inflation. The 2025 standard deduction is $15,000 (single), $22,500 (head of household), and $30,000 (married filing jointly).
1. Keep every Form 1098-E — Box 1 is the deductible interest; never self-report principal.
2. Pay interest with after-tax money — employer or 529 payments do not qualify.
Automatically limits qualifying interest to the $2,500 annual maximum before any phase-out is applied.
Amortizes your real payment stream so you see the true interest-versus-principal split, not a guess.
Shows the allowed deduction at every MAGI band for single, head-of-household, and joint filers.
Reduces adjusted gross income, so it works even when you take the standard deduction.
The student loan interest deduction is an above-the-line adjustment to income, so it lowers your adjusted gross income before your standard or itemized deduction is applied. Borrowers who take the standard deduction still get this break, and you claim it on Schedule 1 of Form 1040 without ever itemizing.
It covers up to $2,500 of interest on qualified education loans, and only the interest portion — never principal. If a parent, employer, or 529 plan made the payment, that interest is generally not deductible by you. Your servicer reports the figure in Box 1 of Form 1098-E. Borrowers who file married filing separately, or who are claimable as a dependent, cannot claim it at all.
The deduction does not vanish at a cliff — it fades out ratably across a defined income band. For single and head-of-household filers the band runs from $85,000 to $100,000 of MAGI (a $15,000 range). For married filing jointly filers it runs from $175,000 to $200,000 (a $25,000 range). Every dollar above the start reduces the $2,500 cap proportionally, and reaching the top of the range eliminates it entirely.
Single filer at $92,500 MAGI: (92,500 − 85,000) ÷ 15,000 = 0.50, so the limit is $2,500 × 0.50 = $1,250.
Joint filer at $187,500 MAGI: (187,500 − 175,000) ÷ 25,000 = 0.50, so the limit is $2,500 × 0.50 = $1,250.
Single filer at $100,000 MAGI or higher: the fraction reaches 1.0 and the limit is $0.
Because the test is MAGI, pre-tax contributions matter. A 401(k) deferral or HSA contribution lowers MAGI, so a borrower just above $85,000 may preserve a partial deduction before year-end.
On a standard amortizing loan the interest charge is calculated against the outstanding balance every month. Early in repayment the balance is highest, so the interest share of each payment is largest — which is why new graduates pay the most deductible interest in their first years. Amortization Mode lays out every payment for the first 12 to 60 months, and the effect works in your favor too: paying extra cuts future interest, and the interest saved dwarfs the small deduction you give up.
⚠️ Disclaimer: This calculator provides estimates for educational purposes only, assuming a standard amortizing education loan with a fixed rate. Figures reflect 2025 federal rules — the $2,500 cap, the $85,000–$100,000 and $175,000–$200,000 MAGI phase-out ranges, and the 10%–37% brackets — and may change with legislation or inflation indexing. Your actual deduction depends on the interest in Box 1 of Form 1098-E and your true MAGI. This is not tax advice; consult a qualified tax professional.