AGI is your total income minus specific deductions the IRS allows

AGI stands for Adjusted Gross Income. It is the number the IRS uses to determine how much tax you owe and whether you can claim certain tax credits or deductions. AGI appears on your tax return (Form 1040) and is calculated by taking your total income from all sources, then subtracting specific deductions called "above-the-line" deductions.

Your AGI is not the same as your gross income, and it is not the same as your taxable income. Gross income is everything you earn. AGI is what remains after you subtract certain allowed deductions. Your taxable income is what remains after you subtract either the standard deduction or itemized deductions from your AGI.

Many government assistance programs — housing vouchers, tax credits, Medicaid, student aid — use your AGI to determine whether you meet income limits. This makes AGI one of the most important numbers on your return.

Key Takeaways

  • AGI is your gross income minus specific deductions like student loan interest, educator expenses, and self-employment tax, and it appears on line 11 of Form 1040.
  • Your AGI determines whether you can claim the Earned Income Tax Credit, Child Tax Credit, and other tax credits that reduce what you owe.
  • Many assistance programs use your AGI to set income limits, so understanding your AGI helps you know what programs you may be able to use.
  • AGI is lower than gross income but usually higher than taxable income, because taxable income subtracts the standard or itemized deduction from AGI.

How AGI is calculated: the step-by-step process

Start with your total income from all sources. This includes wages from a W-2 job, self-employment income, interest, dividends, rental income, Social Security benefits (partially, in some cases), and unemployment benefits. Add all of these together to get your gross income.

Next, subtract the deductions the IRS calls "above-the-line" deductions. These are specific expenses the IRS allows you to subtract before calculating your AGI. Common above-the-line deductions include student loan interest (up to $2,500 per year), educator expenses (up to $300 per year for teachers who buy classroom supplies), self-employment tax (half of what you pay), contributions to a traditional IRA, and alimony paid. The complete list is on Schedule 1 of Form 1040.

The number you reach after subtracting these deductions is your AGI. On Form 1040, AGI appears on line 11. This is the number that matters for most tax credits, most assistance programs, and many other purposes.

Why AGI matters for tax credits and deductions

The IRS uses AGI to determine whether you can claim major tax credits. The Earned Income Tax Credit (EITC) has income limits based on AGI. The Child Tax Credit begins to reduce if your AGI exceeds a certain threshold. The American Opportunity Tax Credit for education expenses phases out at higher AGI levels. If your AGI is too high, you lose these credits even if you would otherwise may have access to.

Some deductions also depend on AGI. For example, you can only deduct medical expenses that exceed 7.5% of your AGI. You can only deduct casualty losses that exceed 10% of your AGI. If your AGI is high, these thresholds become harder to reach, and you may not be able to claim these deductions at all.

This is why lowering your AGI through above-the-line deductions can be valuable. Contributing to a traditional IRA or paying student loan interest reduces your AGI directly, which can make you may be able to access for credits you would otherwise lose.

AGI and government assistance programs

Housing assistance programs, Medicaid, SNAP (food assistance), and many other government programs use AGI to determine income limits. When you apply for these programs, you will usually need to provide your most recent tax return or a statement of your current income. The program will use your AGI (or sometimes gross income, depending on the program) to decide whether you meet the income threshold.

If you are close to an income limit, understanding what counts toward AGI can matter. For example, if you have self-employment income, you may be able to deduct half of your self-employment tax, which lowers your AGI. If you contribute to a traditional IRA, that contribution lowers your AGI. These moves can sometimes bring you under an income limit for an assistance program.

Always check the specific program's rules, because some programs use gross income instead of AGI, and some use a different calculation altogether. But AGI is the most common measure.

The difference between AGI, gross income, and taxable income

These three numbers appear on your tax return, and they are different. Gross income is everything you earn: wages, self-employment income, interest, dividends, rental income, and other sources. It is the starting point.

AGI is gross income minus above-the-line deductions. It is smaller than gross income. It is the number used for most tax credits and most assistance programs.

Taxable income is AGI minus either the standard deduction or your itemized deductions (whichever is larger). Taxable income is the number the IRS uses to calculate how much tax you actually owe. It is usually the smallest of the three numbers. On Form 1040, taxable income appears on line 15.

Example: You earn $50,000 in wages. You contribute $3,000 to a traditional IRA. Your gross income is $50,000. Your AGI is $47,000. If you take the standard deduction (which is $13,850 for a single filer in 2023), your taxable income is $33,150. The IRS calculates your tax on $33,150, not on $50,000.

Where to find your AGI on your tax return

If you file Form 1040 (the main individual income tax form), your AGI is on line 11. This is where the IRS prints it after you have entered all your income and above-the-line deductions.

If you filed a return in a previous year and need to find your AGI, you can look at the copy of the return you kept, or you can contact the IRS. The IRS can provide a transcript of your return that shows your AGI. You can order a transcript online at IRS.gov, by phone at 1-800-908-9946, or by mail using Form 4506-C.

Many assistance programs ask for your AGI from your most recent tax return. Having this number ready before you apply saves time.

How to lower your AGI

If your AGI is close to an income limit for a tax credit or assistance program, you may be able to lower it by claiming above-the-line deductions you have not yet used. Common ways to lower AGI include contributing to a traditional IRA (up to $6,500 per year for most people, or $7,500 if you are 50 or older), paying student loan interest (up to $2,500 per year), and claiming educator expenses if you are a teacher (up to $300 per year).

If you are self-employed, you can deduct half of your self-employment tax, business expenses, and contributions to a SEP-IRA or Solo 401(k). These deductions lower your AGI directly.

Timing matters. You must make these contributions or payments in the tax year you want to claim them. For example, if you want to lower your 2024 AGI, you must contribute to a traditional IRA by April 15, 2025 (the tax filing deadline). Contributions made after that date count toward the next year's AGI.

Frequently Asked Questions

Is AGI the same as my take-home pay?

No. AGI is a tax calculation that appears on your return. Take-home pay is what you actually receive in your paycheck after taxes, Social Security, Medicare, and other deductions are withheld. AGI is much higher than take-home pay because it does not account for taxes withheld or other payroll deductions.

Do I need to report AGI when I apply for housing assistance?

Most housing assistance programs ask for your income, and many use AGI from your tax return to verify it. Some programs ask for gross income instead. When you apply, the program will tell you what income figure they need. Bring your most recent tax return so you have the exact number.

Can my AGI be negative?

Yes, if your deductions exceed your gross income. This happens most often to self-employed people who have large business losses. A negative AGI means you owe no federal income tax and may be able to carry the loss forward to reduce AGI in future years.

What if I do not have a tax return to show my AGI?

If you did not file a tax return, you can calculate your AGI by adding up all your income from the past year and subtracting any above-the-line deductions. Write this down and bring it when you apply for assistance. Some programs will ask you to sign a statement under penalty of perjury confirming your income.

Does AGI include Social Security benefits?

Partially. Social Security benefits are included in AGI only if your "combined income" (adjusted gross income plus nontaxable interest plus half of Social Security benefits) exceeds certain thresholds. For most people receiving Social Security, the benefits are not included in AGI. The IRS Form 1040 instructions explain the exact calculation.