Above-the-Line Deduction
An above-the-line deduction is a tax deduction that a taxpayer may claim to reduce gross income and arrive at adjusted gross income (AGI) regardless of whether they itemize or claim the standard deduction. These deductions appear on Schedule 1 of Form 1040 and include items such as student loan interest, educator expenses, contributions to HSAs and traditional IRAs, and self-employment tax.
The phrase 'above the line' refers to the line on Form 1040 that represents adjusted gross income. Deductions taken before arriving at AGI — known formally as adjustments to income — are universally available to taxpayers who qualify, whether they ultimately claim the standard deduction or itemize on Schedule A. This makes above-the-line deductions generally more valuable than below-the-line (itemized) deductions for many taxpayers.
AGI itself serves as the baseline for a wide range of phase-outs, limitations, and eligibility thresholds throughout the tax code. A lower AGI can expand eligibility for credits such as the Earned Income Tax Credit, increase allowable IRA deduction amounts, reduce the taxable portion of Social Security benefits, and lower the threshold for deductible medical expenses. Because above-the-line deductions reduce AGI directly, they produce these secondary benefits in addition to the direct reduction in taxable income.
For 2025, the most commonly used above-the-line deductions include: the deduction for student loan interest (up to $2,500, subject to income phase-outs); the educator expense deduction ($300 per eligible educator); contributions to a Health Savings Account (HSA); contributions to a traditional IRA (up to $7,000, or $8,000 for those 50 and older, with phase-outs for those covered by a workplace plan); the self-employed health insurance deduction; and the deduction for one-half of self-employment tax.
For investors who are self-employed, contributions to a SEP-IRA or SIMPLE IRA are also above-the-line deductions and can be substantially larger than the traditional IRA limits — SEP-IRA contributions for 2025 can reach up to 25% of net self-employment income, to a maximum of $70,000.
The alimony deduction was eliminated for divorce or separation agreements executed after December 31, 2018, under the TCJA. Moving expense deductions are suspended for most taxpayers (except active-duty military members) through 2025.
Above-the-line deductions are reported on Schedule 1 (Additional Income and Adjustments) and the total flows to Form 1040. Because they reduce AGI, they represent some of the most structurally advantageous provisions available to U.S. taxpayers who qualify for them.