What it means
Only the person legally obligated on the loan can deduct its interest, even if someone else helps with payments, so a parent paying a child's loan cannot claim the deduction merely by paying. An eligible obligated borrower may deduct qualifying interest paid on their behalf, treated as received and then paid by them.
The deduction covers interest, not principal, and the IRS counts both required and voluntarily prepaid interest, so the annual deduction is the lesser of $2,500 or the interest actually paid. Because it is an adjustment to income, it reduces income before the choice between the standard deduction and itemising, so a borrower can take the standard deduction and still claim it.
Eligibility has several gates: the filer must be legally obligated on a qualified student loan, cannot file as married filing separately, and must have modified adjusted gross income (MAGI, adjusted gross income with certain items added back) below the annually set limit. Neither the filer nor a spouse on a joint return can be claimed as someone else's dependent.
A qualified student loan is one taken out solely to pay qualified higher education expenses. The expenses must be for the filer, a spouse, or a person who was a dependent when the loan was taken out, for an eligible student during an academic period, within a reasonable time around the borrowing.
The phaseout is income-based and the thresholds are set annually. For tax year 2025, the single-filer phaseout ran from $85,000 to $100,000 of MAGI, and anyone planning around the deduction should check the figures for the relevant year rather than relying on a remembered number.
As income moves through the range, the deduction shrinks in proportion until it disappears. Interaction with other education tax benefits needs care: the same interest cannot be deducted twice, and tax-free employer assistance can change eligibility.
Loans refinanced or consolidated keep their qualified status only under the rules in Publication 970, so checking the publication is safer than assuming a refinanced loan still qualifies. Paperwork is simple: a borrower who pays $600 or more of interest in a year should receive Form 1098-E from the loan holder, though the deduction does not depend on receiving the form if the interest was actually paid.
The deduction reduces taxable income, not tax dollar for dollar, so its value equals the deducted amount times the filer's marginal rate. Publication 970 contains the worksheet used when special income exclusions apply.
In practice
Real-world examples.
Example
A fictional borrower pays $1,800 of student loan interest in the year. The deduction is $1,800, the lesser of that amount and $2,500. At a 22% marginal rate the tax saving is $396.
Example
A fictional filer takes the standard deduction and assumes no further deductions apply. The student loan interest deduction still works, because it is an adjustment to income rather than an itemised deduction. The filer simply claims it on the return alongside the standard deduction.
Example
A fictional graduate is claimed as a dependent on a parent's return. She cannot take the deduction for that year, whatever interest she paid on her own loans. Her parents also cannot claim it, because they are not legally obligated on her loan.
Formula
Calculation
Deduction = lesser of $2,500 or student loan interest actually paid, reduced in proportion within the income phaseout. Illustrative tax saving = deduction x marginal rate.
Worked example 1: a borrower pays $2,900 of interest, so the deduction is capped at $2,500. At a 22% marginal rate the tax saving is $2,500 x 22% = $550.
Worked example 2 (assumed phaseout range of $85,000 to $100,000): a single filer with MAGI of $92,500 is halfway through the range, since ($92,500 - $85,000) / $15,000 = 50%. The deduction is $2,500 x (1 - 50%) = $1,250, and at a 22% rate the saving is $1,250 x 22% = $275.
Figures are fictional and simplified. Phaseout thresholds are set annually, and Publication 970's worksheet governs special cases such as foreign earned income.Case study
Seen in the real world.
This case study is fictional and illustrative. A recent graduate pays $2,900 of interest and plans to deduct the full amount against her salary. Reading the IRS guidance on the deduction (Topic 456), she caps the deduction at $2,500 and checks her MAGI against the current year's phaseout range. She also confirms her filing status qualifies and that no one claims her as a dependent.
She claims $2,500 as an adjustment to income while taking the standard deduction. Her saving is the deduction times her marginal rate, not the full $2,500. Her loan servicer sends Form 1098-E in January showing the interest paid, and she keeps it with her records. The next year she changes jobs and her income rises, so she checks the new phaseout range before assuming she still qualifies for the full amount.
Watch out
Common mistakes.
- Deducting principal payments, or deducting the full interest amount even when it exceeds the $2,500 cap.
- Assuming itemising is required; this is an adjustment to income.
- Using a prior year's phaseout thresholds instead of the annually set limits.
Questions
People also ask.
How much can be deducted?
The lesser of $2,500 or the interest actually paid on a qualified student loan during the year, subject to the annual income phaseout.
Do you need to itemise?
No. The deduction is an adjustment to income, so it works alongside the standard deduction and does not require itemising.
What form reports the interest?
Form 1098-E, issued when $600 or more of interest was paid in the year.
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