Glossary
MAGI (modified adjusted gross income)
AGI with certain items added back; used for Medicaid, ACA subsidies, and the senior deduction phase-out.
Modified adjusted gross income starts with AGI and adds back items such as untaxed foreign income, non-taxable Social Security, and tax-exempt interest. The exact add-backs vary by program.
For most filers with simple finances, MAGI equals AGI. The $6,000 senior deduction phases out at 6% of MAGI above $75,000 (single) or $150,000 (joint).