Quick Answer
AGI is your total income minus specific "above-the-line" deductions like IRA contributions and student loan interest. It appears on line 11 of Form 1040 and determines eligibility for most tax benefits. For example, someone earning $70,000 who contributes $6,000 to an IRA has an AGI of $64,000.
Best Answer
Robert Kim, Tax Return Analyst
Best for people who are new to filing taxes and need a complete explanation of AGI
AGI = Your income minus specific deductions
Adjusted Gross Income (AGI) is your total income for the year, minus certain deductions that the IRS allows you to subtract "above-the-line" (before calculating your standard or itemized deductions). Think of AGI as your "adjusted" income that determines what tax benefits you qualify for.
How AGI is calculated (Form 1040)
Step 1: Total Income (Line 9)
Add up all your income sources:
Step 2: Above-the-line deductions (Line 10)
Subtract these specific deductions:
Step 3: Calculate AGI (Line 11)
AGI = Total Income (Line 9) - Adjustments (Line 10)
Real example: Jennifer's AGI calculation
Jennifer's 2026 tax return:
Jennifer's AGI (Line 11): $71,000 - $10,200 = $60,800
Why AGI matters more than your salary
Your AGI, not your gross salary, determines eligibility for:
Tax Credits:
Deductions:
Other Benefits:
AGI vs. other income terms
Strategies to lower your AGI
Maximize above-the-line deductions:
Example impact: If Jennifer contributes the maximum $7,000 to her IRA instead of $6,000, her AGI drops to $59,800. This could:
What you should do
Find your AGI on line 11 of your most recent tax return. This number is also your "Prior Year AGI" needed to e-file next year's return. Use our Refund Estimator to see how different AGI levels affect your tax liability and refund.
Key takeaway: Your AGI (line 11) determines eligibility for most tax benefits. Lowering AGI through IRA contributions, HSA contributions, and student loan interest can unlock significant tax savings.
*Sources: [IRS Publication 17](https://www.irs.gov/pub/irs-pdf/p17.pdf), [IRS Publication 501](https://www.irs.gov/pub/irs-pdf/p501.pdf)*
Key Takeaway: Your AGI determines eligibility for most tax benefits. Lowering AGI through IRA, HSA, and student loan interest deductions can unlock significant tax savings.
2026 Above-the-line deduction limits that reduce AGI
| Deduction Type | Limit (Under 50) | Limit (50+) | Income Restrictions |
|---|---|---|---|
| Traditional IRA | $7,000 | $8,000 | Phases out with 401(k) |
| HSA (Self-only) | $4,300 | $4,300 | Must have HDHP |
| HSA (Family) | $8,550 | $8,550 | Must have HDHP |
| Student Loan Interest | $2,500 | $2,500 | Phases out at $85K AGI |
| SEP-IRA (Self-employed) | 25% of net SE income | 25% of net SE income | Max $69,000 |
More Perspectives
Diana Flores, Tax Credits & Amendments Specialist
Best for employees who primarily have W-2 income and take the standard deduction
AGI for straightforward W-2 employees
If you're a W-2 employee with straightforward finances, your AGI calculation is simpler but still important for maximizing tax benefits.
Your likely AGI scenario
For most W-2 employees, AGI equals your W-2 wages minus any of these common adjustments:
Example: Tom's simple AGI
Tom works as an accountant earning $58,000 per year:
This $4,800 AGI reduction could qualify Tom for credits he wouldn't get at the higher income level.
Why this matters for W-2 employees
Child Tax Credit: Phases out at $200,000 AGI (single). Even if you earn $210,000, maximizing above-the-line deductions could keep you eligible.
Education Credits: The American Opportunity Credit phases out starting at $80,000 AGI (single). A teacher earning $85,000 who contributes $7,000 to an IRA drops to $78,000 AGI and qualifies for the full $2,500 credit.
Roth IRA eligibility: Contribution limits start at $138,000 AGI (single). Reducing AGI through traditional IRA or HSA contributions can preserve Roth IRA eligibility.
Quick AGI optimization for W-2 employees
1. Maximize employer 401(k) match (this reduces your W-2 wages, lowering line 1a)
2. Contribute to traditional IRA if you don't have a 401(k) or want additional tax reduction
3. Use HSA if eligible — triple tax advantage and reduces AGI
4. Pay student loan interest — automatic deduction up to $2,500
Key takeaway: Even W-2 employees can significantly reduce AGI through IRA and HSA contributions, potentially unlocking thousands in additional tax credits.
Key Takeaway: Even W-2 employees can significantly reduce AGI through IRA and HSA contributions, potentially unlocking thousands in additional tax credits.
Robert Kim, Tax Return Analyst
Best for taxpayers with W-2 income plus freelance, investment, or other income streams
AGI with multiple income streams
When you have multiple income sources — W-2 wages, freelance income, investments, rental property — understanding AGI becomes more important because you have more opportunities to reduce it.
Complex income, more AGI reduction opportunities
Self-employment income adds deductions:
Investment income considerations:
Example: Maria's complex AGI
Maria has multiple income sources in 2026:
Income:
Above-the-line deductions:
Maria's AGI: $64,200 - $12,673 = $51,527
Maria reduced her AGI by nearly $13,000, dropping from the 22% tax bracket to the 12% bracket for most of her income.
Strategic AGI planning with multiple incomes
Time income recognition: If you're self-employed, you can sometimes delay invoicing until January to push income to the next tax year.
Maximize business retirement contributions: SEP-IRAs allow contributions up to 25% of net SE income (up to $69,000 for 2026).
Harvest investment losses: Capital losses offset capital gains and up to $3,000 of ordinary income per year.
Consider business structure: S-Corp election can reduce self-employment tax, though it complicates AGI calculations.
Key takeaway: Multiple income sources create more AGI reduction opportunities through business deductions, higher retirement contribution limits, and strategic income timing.
Key Takeaway: Multiple income sources create more AGI reduction opportunities through business deductions, higher retirement contribution limits, and strategic income timing.
Sources
- IRS Publication 17 — Your Federal Income Tax (Individual Tax Guide)
- IRS Publication 501 — Dependents, Standard Deduction, and Filing Information
Related Questions
Reviewed by Robert Kim, Tax Return Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.