Adjusted Gross Income (AGI)
Category: Income & filing · Related form: Form 1040
Your total income minus specific “above-the-line” adjustments. AGI is the starting point for many credits, deduction phaseouts, and Medicare IRMAA brackets.
How Adjusted Gross Income (AGI) fits 2026 planning
Adjusted Gross Income (AGI) sits inside income reporting and filing-status choices that feed every later deduction, credit, and bracket calculation. For tax year 2026, US Tax Tools treats year-scoped constants (brackets, contribution limits, wage bases, credit schedules) as separate datasets — so explanations of Adjusted Gross Income (AGI) should be read with the same year selected in any linked calculator.
Category focus: Income & filing. Readers usually land on this page while comparing a paycheck estimate, a credit phaseout, or a retirement contribution room figure that depends on understanding Adjusted Gross Income (AGI) first.
Worked example
Wages of $90,000 plus $2,000 of deductible IRA contributions produce AGI of $88,000 before you apply the standard or itemized deduction.
Treat the example as a teaching sketch, not a filing position. Change filing status, state residency, or mid-year events and the same definition of Adjusted Gross Income (AGI) can produce a different cash outcome even when the glossary text stays the same.
What to watch for
Definitions of Adjusted Gross Income (AGI) can differ slightly across IRS publications, SSA rules, Marketplace subsidy worksheets, and state agencies. When two programs both say “income,” confirm which modification rules apply — MAGI for one credit is not always MAGI for another.
Legislation and inflation adjustments can move the dollar thresholds around Adjusted Gross Income (AGI) without renaming the concept. Prefer the effective date on the primary source (Rev. Proc., SSA notice, USDA table, or state DOR bulletin) over any blog summary — including this one if a later notice supersedes it.
On a filed return, Adjusted Gross Income (AGI) most often surfaces around Form 1040. Read the official IRS instructions for that form for the tax year you are filing — glossary pages summarize concepts; they do not replace line-by-line worksheets.
You may also see this concept labeled as AGI, adjusted gross income. Search engines and payroll portals sometimes use those aliases interchangeably with “Adjusted Gross Income (AGI).”
Next step
When you are ready to model numbers, open the Adjusted Gross Income (AGI) related calculator on US Tax Tools. Engines keep tax-year datasets separate so a 2025 habit does not silently reuse a 2026 constant.
Related reading: Tax insights for longer 2026 explainers, Methodology for how engines store cents and traces, and Disclaimer for educational-use limits.