Simple definition
Adjusted gross income, or AGI, is your total income for the year minus a handful of specific adjustments the tax rules allow — things like certain retirement contributions or student loan interest. Think of it as your income after a first round of trimming. It is the number your tax return builds on, and it decides whether you qualify for many credits and deductions.
Why it matters
AGI is one of the most important numbers on your tax return. Many credits, deductions, and benefit thresholds are tied to it, so a lower AGI can unlock savings. Knowing what raises or lowers it helps you make smarter money moves before the year ends.
Real-life example
Suppose you earn $60,000 in wages and also have $2,000 in interest income, for $62,000 total. If you contribute $5,000 to a traditional IRA that qualifies as an adjustment, your AGI drops to $57,000. That lower number is what many tax breaks are measured against.
Formula
Adjusted Gross Income = total income − adjustments
Common mistakes
- Confusing AGI with take-home pay — it is a tax figure, not your paycheck.
- Forgetting that some contributions and expenses lower your AGI as adjustments.
- Overlooking how a lower AGI can qualify you for credits you would otherwise lose.
- Mixing up AGI with taxable income, which comes after deductions are applied.
Pro tips
- Find your AGI on your tax return; it is often needed to verify a future filing.
- Contributing to a traditional retirement account may lower your AGI.
- Watch AGI thresholds late in the year — small moves can keep you under a limit.
- Keep last year's return handy; its AGI is used to e-file the next one.
Related Money Dictionary terms
- Gross IncomeYour total earnings before any taxes, retirement contributions, or other deductions are taken out of your paycheck.
- Taxable IncomeThe portion of your income left after deductions that the government actually applies tax rates to.
- Tax DeductionAn expense you can subtract from your income to lower the amount that gets taxed.
- Tax CreditA dollar-for-dollar reduction of the tax you owe, making it more valuable than a deduction of the same size.
- Earned Income Tax Credit (EITC)A refundable credit for low-to-moderate income workers that grows with earnings up to a limit, then phases out.
Frequently asked questions
What is the difference between AGI and taxable income?
AGI is your total income minus adjustments — an early step in the tax math. Taxable income comes later, after you subtract your standard or itemized deductions from AGI. In short, AGI is the starting point, and taxable income is closer to the amount your tax rates actually apply to.
How can I lower my AGI?
You can reduce AGI through specific adjustments the tax rules allow, such as contributions to certain retirement accounts or health savings accounts, and some student loan interest. These are subtracted before deductions. Lowering your AGI can also help you qualify for credits and deductions with income limits.
Where do I find my AGI?
Your AGI appears on your federal tax return from the prior year on a specific line of the main form. You often need it to verify your identity when e-filing the next year. If you cannot find your return, you can request a transcript from the IRS.
Knowing what Adjusted Gross Income (AGI) means is knowledge — the first half. A brick gets placed when you act on it: locate the AGI line on last year's tax return so you have it for your next filing.
Sources & references
More in Taxes
Plain-English education — not personalized legal, tax, or investment advice.