Adjusted Gross Income appears on line 11 of Form 1040

Adjusted Gross Income (AGI) is on line 11 of the 2024 Form 1040. It sits between your total income (line 9) and your taxable income (line 15), because AGI is what you get after you subtract certain deductions from your total income but before you claim the standard or itemized deduction.

The IRS uses AGI to determine your tax bracket, whether you can claim certain credits, and whether you are subject to income limits on retirement contributions. Many state tax forms also reference your federal AGI, so finding it correctly matters for both your federal and state returns.

If you file electronically, tax software will calculate AGI automatically and show it on your return. If you file by hand, you will calculate it yourself by working through the lines in order.

Key Takeaways

  • AGI is printed on line 11 of Form 1040 and is used to determine tax brackets, credit limits, and retirement contribution may be able to access.
  • AGI is calculated by taking your total income (line 9) and subtracting specific deductions like educator expenses, student loan interest, and IRA contributions.
  • The deductions that reduce income to AGI are listed on Schedule 1 (Form 1040) if you have any; otherwise line 10 will be zero.
  • Your AGI is different from your taxable income because taxable income also accounts for your standard or itemized deduction.

How AGI is calculated on Form 1040

The math is straightforward: total income minus adjustments equals AGI. Line 9 shows your total income from all sources — wages, interest, dividends, capital gains, self-employment income, and other sources. Line 10 shows the total of your adjustments to income.

Those adjustments come from Schedule 1 (Form 1040), Part II. Common adjustments include educator expenses, student loan interest paid, contributions to a traditional IRA, self-employment tax deduction, and health insurance premiums paid by the self-employed. If you have no adjustments, line 10 is zero, and your AGI equals your total income.

Line 11 is straightforward the result: line 9 minus line 10. That number is your AGI for the year.

Why the IRS cares about AGI

AGI is the threshold the IRS uses to phase out tax credits and deductions. For example, the Earned Income Tax Credit, the Child Tax Credit, and the American Opportunity Credit all have income limits based on AGI. If your AGI exceeds the limit, the credit shrinks or disappears entirely.

AGI also determines whether you can deduct contributions to a Roth IRA, whether you can claim the student loan interest deduction, and whether you are subject to the Net Investment Income Tax. Lowering your AGI through adjustments like traditional IRA contributions can keep you under these thresholds and preserve credits you would otherwise lose.

Many states use your federal AGI as the starting point for their own state tax calculations, so the number matters beyond federal tax alone.

AGI versus taxable income

AGI and taxable income are not the same. After you calculate AGI on line 11, you then subtract either the standard deduction or your itemized deductions (whichever is larger) to arrive at taxable income on line 15. Taxable income is what you actually pay tax on.

The distinction matters because some income limits and credit calculations use AGI, while others use modified AGI (which may add back certain deductions). Always check the specific rule or form to see which version of income applies.

Where to find AGI if you filed in prior years

If you need to know your AGI from a prior year — for a mortgage process, a financial aid form, or to verify a payment — you can find it on the copy of your return you kept or on your IRS account transcript. The IRS provides a free transcript tool at IRS.gov where you can view your AGI, filing status, and other return information from the past three years without calling.

If you filed electronically, your tax software usually stores a copy of your return in your account. If you filed by mail, refer to the copy you kept before mailing the original.

Common mistakes when locating AGI

The most frequent error is confusing AGI with total income or taxable income. Total income (line 9) is larger because it has not yet had adjustments subtracted. Taxable income (line 15) is smaller because it has had the standard or itemized deduction subtracted. AGI sits in the middle.

Another mistake is looking at the wrong line number if you are using an older form. The line numbers have shifted over the years as the IRS has redesigned Form 1040. Always use the form for the tax year you are looking at, not a form from a different year.

When you need to report AGI to other agencies

Many programs and forms ask for your AGI: the Free process for Federal Student Aid (FAFSA), mortgage lenders, state tax returns, and income-based repayment plans for student loans. When you provide it, use the AGI from the most recent tax return you filed, not an estimate of the current year.

If you have not yet filed for the current year, use the AGI from the prior year. If the program asks for "modified AGI" or specifies a particular calculation, follow those instructions rather than using the line 11 figure, because some programs add back certain deductions for their own purposes.

Frequently Asked Questions

Is AGI the same as my gross income?

No. Gross income is your total income before any deductions. AGI is gross income minus specific adjustments like IRA contributions and student loan interest. AGI is smaller than gross income if you have any adjustments.

Can I lower my AGI to get a bigger tax credit?

Yes, by making adjustments that reduce AGI — such as contributing to a traditional IRA, paying student loan interest, or claiming educator expenses. These adjustments lower your AGI and may preserve credits that phase out at higher income levels. Consult a tax professional to see which adjustments fit your situation.

What if I made a mistake on line 11?

If you filed electronically, your tax software calculated AGI automatically, so errors are rare. If you filed by hand and made an error, you can file Form 1040-X (Amended U.S. Individual Income Tax Return) to correct it. The IRS will recalculate your tax based on the corrected AGI.

Do I need to report AGI on my state tax return?

Most states use your federal AGI as the starting point for state tax, so yes. Your state return will reference your federal AGI from line 11. Some states then make adjustments specific to state law, but they begin with the federal figure.

Where is AGI on the 1040-EZ or 1040-A?

The IRS discontinued Form 1040-EZ after 2017 and Form 1040-A after 2018. All filers now use Form 1040 or Form 1040-SR (for age 65 and older). AGI is on line 11 of both current forms.