Adjusted gross income (AGI) is gross income minus certain adjustments. Learn how AGI is calculated, where to find it, and why it matters.
Adjusted gross income, usually shortened to AGI, is your total taxable income for the year minus specific adjustments allowed by federal tax law. It is an intermediate number on your federal return: AGI comes after total income but before the standard deduction or itemized deductions.
A tax return moves through several income measurements. You generally begin with taxable income from wages, self-employment, investments, rentals, retirement distributions, and other sources. After combining those amounts, you subtract qualifying adjustments to arrive at AGI. You then subtract deductions allowed below AGI to reach taxable income. Tax rates and credits are applied later to determine tax liability.
That sequence matters because AGI is not the amount deposited into your bank account, the amount shown on a single W-2, or the final amount on which all tax is calculated.
Start by adding the taxable amounts from all income sources that apply to you. For a business owner or independent contractor, the income included is generally net business profit after allowable business expenses, not every dollar of gross receipts.
Next, subtract the adjustments to income you are entitled to claim. These are sometimes called above-the-line deductions because they are taken before AGI is calculated. Many are reported on Schedule 1 of Form 1040.
This is not a complete list, and eligibility can depend on filing status, income, plan coverage, and other facts. Workplace retirement contributions may also reduce taxable wages before they reach your return, but they are not necessarily a separate Schedule 1 adjustment.
Assume a taxpayer has $72,000 of wages, $800 of taxable interest, and $7,200 of net profit from a side business. Total income is $80,000. The taxpayer qualifies for $2,000 of HSA deductions, a $500 deduction for one-half of self-employment tax, and $1,000 of student loan interest.
The $76,500 AGI is not yet taxable income. The taxpayer still may subtract the standard deduction or itemized deductions and any other applicable deduction allowed after AGI.
AGI appears near the bottom of the income section of Form 1040. On the 2025 Form 1040, AGI is calculated on line 11a and carried to line 11b before deductions. Older forms and general IRS guidance often refer to this location simply as line 11, so confirm the line label for the tax year you are reviewing.
AGI does not appear on Form W-2. A W-2 reports wages from one employer, while AGI combines the relevant income and adjustments from the entire return.
| Term | Meaning |
|---|---|
| Gross or total income | The taxable income starting point before adjustments to income. |
| Adjusted gross income (AGI) | Total income minus specific adjustments allowed before the standard or itemized deduction. |
| Modified adjusted gross income (MAGI) | AGI modified under the rules for a particular credit, deduction, account, tax, or government program. |
| Taxable income | The amount remaining after deductions allowed below AGI; generally the amount to which income tax rates apply. |
AGI is used throughout the tax system. It may affect whether a return must be filed, the amount of a deduction or credit, limits on certain losses, and eligibility for tax benefits. AGI also serves as the starting point for many state income tax returns.
Prior-year AGI has a separate administrative use: the IRS may ask for it to verify your identity when you electronically file. That does not make last year's AGI part of this year's tax calculation.
California resident returns begin with federal AGI and then apply California additions and subtractions, generally through Schedule CA (540), to reach California AGI. Because California does not conform to every federal rule, the California amount can differ even when the underlying income is the same.
A federal deduction should not automatically be assumed to produce the same California result. This is especially important when a return includes business income, retirement items, health savings accounts, depreciation, or other areas where federal and California treatment may diverge.
It may be worth reviewing projected AGI before year-end when you start self-employment, sell investments, take a large retirement distribution, become eligible for an HSA, make an IRA contribution, move between states, or approach an income limit for a credit or deduction. Timing matters because some planning choices must be made during the tax year, while others have later contribution deadlines.
Need help understanding the numbers on your return? Heath Income Tax prepares federal and California individual returns and offers year-round tax planning for clients in Santa Maria, across the Central Coast, and remotely.
Is AGI before or after the standard deduction?
Before. AGI is calculated before the standard deduction or itemized deductions are subtracted.
Can AGI be the same as gross income?
Yes. If you have no adjustments to income, your AGI may equal your total income.
Does a tax refund change AGI?
A federal income tax refund generally does not change the AGI calculation for the year in which it is received. State tax refunds can have separate federal treatment depending on prior deductions.
Can I find AGI on my W-2?
No. Your W-2 is one source document used to prepare the return; AGI is calculated after all relevant income and adjustments are combined.
The definitions and examples on this page are for informational purposes only and do not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making decisions based on this content.
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