Modified Adjusted Gross Income

🇺🇸 Modified Adjusted Gross Income (MAGI) is a calculation that starts with one's Adjusted Gross Income and then applies various modifications to that amount.

There are multiple versions of MAGI, and one should take care to use the applicable modifications.

MAGI for Affordable Care Act purposes
See

MAGI for child tax credit / credit for other dependents
Child Tax Credit (CTC), Credit for Other dependents (ODC). See

MAGI for education credit purposes
See

MAGI for the FAFSA® form
FAFSA® (Free Application for Federal Student Aid) form. See

MAGI for traditional IRA purposes
See

MAGI for Roth IRA purposes
See

MAGI for net investment income tax
See Form 8960

MAGI for premium tax credit
See

MAGI for rental passive loss allowance
See

MAGI for student loan interest deductibility
See

MAGI for Medicare premiums (IRMAA tiers)
This MAGI is defined in 42 U.S.C. 1395r(i)(4), from the Social Security Act §1839. It is adjusted gross income as shown on the tax return plus tax-exempt interest and tax-exempt foreign earned income and foreign housing cost. Page 2 of mentions the tax-exempt interest but neglects to mention the necessary addition of the foreign items.