AGI Calculator
Calculate your Adjusted Gross Income (Form 1040, Line 11) for 2025-2026. AGI determines your eligibility for tax credits, deductions, and Roth IRA contributions.
Income Sources
Above-the-Line Deductions
Adjusted Gross Income (Line 11)
$83,234
for 2026 tax year
Income Breakdown
$30,000 - $5,000 expenses
Above-the-Line Deductions
Auto-calculated from Schedule SE
What Your AGI Affects
QBI Deduction (20%)
Full deduction available
Roth IRA Eligibility
Full contribution allowed
Premium Tax Credit
AGI between 100-400% of federal poverty level qualifies for marketplace subsidies
Earned Income Tax Credit
AGI exceeds EITC income limits
AGI vs. Taxable Income
AGI is not your taxable income. After calculating AGI, you subtract either the standard deduction ($15,700 for single in 2026) or itemized deductions to arrive at taxable income.
What is Adjusted Gross Income (AGI)?
Form 1040, Line 11
AGI is your total income minus specific above-the-line deductions. It appears on Line 11 of Form 1040.
Gateway Number
AGI determines eligibility for tax credits, deduction limits, Roth IRA contributions, and marketplace subsidies.
IRS Identity Verification
The IRS uses your prior-year AGI to verify your identity when you e-file your tax return.
Why AGI Matters for Self-Employed Workers
QBI Deduction Thresholds
The 20% Qualified Business Income deduction phases out for specified service businesses when taxable income exceeds $191,950 (single) or $383,900 (MFJ) in 2026.
Above-the-Line Deductions
Self-employed workers get exclusive deductions that reduce AGI: half of SE tax, health insurance premiums, and retirement contributions.
Estimated Tax Payments
Your AGI helps determine quarterly estimated tax payments. Underpayment penalties apply if you don't pay enough throughout the year.
AGI vs. MAGI: What's the Difference?
Adjusted Gross Income (AGI)
- Total income minus above-the-line deductions
- Found on Form 1040, Line 11
- Used for most tax credit calculations
- Required for IRS e-file identity verification
Modified AGI (MAGI)
- AGI plus certain deductions added back
- Adds back: student loan interest, tuition, foreign income
- Used for Roth IRA contribution limits
- Used for ACA premium tax credit eligibility
Official References
This calculator uses current IRS rules for computing AGI:
- IRC Section 62 - Adjusted Gross Income Defined
The statutory definition of AGI and all above-the-line deductions
- IRS Form 1040
U.S. Individual Income Tax Return - AGI is Line 11
- IRS Publication 17
Your Federal Income Tax - comprehensive guide to income and deductions
This calculator provides estimates. Your actual AGI may vary based on additional income sources and deductions not included here. Consult a tax professional for personalized advice.