Free student loan interest deduction calculator
Enter your student loan interest paid and MAGI — this student loan interest deduction calculator applies the 2024 phase-out ($75k–$90k single / $155k–$185k MFJ) to show your allowable above-the-line deduction, updated live, as you type.
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Estimated only. Actual withholding depends on your W-4 elections, filing status, and local laws. Consult your payroll provider for exact figures.
Results are estimates. Consult a professional.
How the student loan interest deduction calculator works
The student loan interest deduction lets you deduct up to $2,500 of interest paid on qualified student loans from your gross income — without itemizing. It is an above-the-line deduction, meaning it reduces your Adjusted Gross Income (AGI) and therefore benefits you even if you take the standard deduction.
The deduction phases out at higher Modified Adjusted Gross Income (MAGI) levels. The phase-out is proportional: as your MAGI climbs through the phase-out range, your maximum deduction shrinks linearly to zero. For 2024, those thresholds are unchanged from 2023 and are not inflation-adjusted under current law.
Worked example: partial deduction in the phase-out range
Taylor is single, paid $2,200 in qualified student loan interest during 2024, and has a MAGI of $82,000. The single phase-out runs from $75,000 to $90,000 (a $15,000 range). Taylor is $7,000 into the phase-out.
Deduction at key MAGI levels (assuming $2,500 interest paid)
The table below shows the allowable deduction at selected MAGI levels for single filers and married filers (MFJ), assuming the maximum $2,500 in qualifying interest was paid. The deduction is zero for MFS filers at any income level.
| MAGI | Single — deduction | MFJ — deduction |
|---|---|---|
| Below $75,000 / $155,000 | $2,500 | $2,500 |
| $78,000 / $161,000 | $2,000 | $2,250 |
| $82,500 / $170,000 | $1,250 | $1,667 |
| $87,000 / $179,500 | $500 | $875 |
| $90,000+ / $185,000+ | $0 | $0 |
2024 thresholds: single phase-out $75,000–$90,000; MFJ phase-out $155,000–$185,000. Source: IRS Rev. Proc. 2023-34.
Tips for the student loan interest deduction
The deduction is straightforward but a few eligibility details trip up filers every year. Review these before filing.
- Get your Form 1098-E — Loan servicers send a Form 1098-E if you paid $600 or more in interest. Even if you paid less, the interest is still deductible — you may need to pull the amount from your servicer's online account.
- Watch the MFS trap — Married filers who file separately cannot claim this deduction at all, even if they paid qualifying interest. If you are deciding whether to file jointly or separately, factor this in.
- Only qualified loans count — The loan must have been taken out solely to pay qualified higher education expenses for yourself, your spouse, or a dependent at the time you took out the loan. Personal loans or credit cards used for tuition do not qualify.
- Reduce MAGI to preserve the deduction — Pre-tax 401(k) contributions, HSA contributions, and SEP-IRA contributions all reduce MAGI. If you are near the $75,000 or $155,000 threshold, maximizing these can restore some or all of the deduction.
- Refinanced loans still qualify — Interest on a refinanced student loan counts, as long as the refinance was solely to repay one or more qualified student loans and the original loan met the education-expense test.
Accuracy and limitations
This calculator applies the 2024 phase-out thresholds ($75,000–$90,000 single; $155,000–$185,000 MFJ) to compute a proportional reduction in the $2,500 maximum deduction based on the MAGI you enter. It uses the statutory linear phase-out formula from IRS Publication 970.
The tool does not verify loan eligibility, distinguish between capitalized interest and paid interest, or account for student loan interest paid on behalf of someone else who is not your dependent. It also does not factor in state deductions, which vary by state. The deduction is reported on Schedule 1 (Form 1040), line 21. This calculator is a planning estimate — not tax advice.
Student loan interest deduction terms defined
About this student loan interest deduction calculator
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