Start with your total income
Add taxable wages, salaries, tips, and self-employment income
Add interest, dividends, rental income, and other taxable income
Subtract above-the-line deductions
Subtract deductible IRA contributions
Subtract student loan interest
Subtract educator expenses
Subtract HSA contributions
Subtract self-employed health insurance premiums
Subtract half of self-employment tax
Subtract alimony paid if allowed for your tax year
Subtract certain retirement plan contributions if allowed
Subtract other eligible adjustments to income
The result is your adjusted gross income
Use your tax return forms to calculate it
On Form 1040, find AGI on the line labeled adjusted gross income