Understanding AGI and MAGI: A Quick Guide
Overview
AGI and MAGI sound like accounting trivia, but they quietly determine a lot: whether you can contribute to a Roth IRA, what you'll pay for Medicare, and which deductions phase out as your income rises. Two numbers, a wide range of consequences.
Because MAGI is calculated differently depending on which benefit or rule you're checking against, it's worth confirming the specific definition that applies to your situation rather than assuming one number fits every purpose.
What this checklist covers
- 1What's included in AGI
- 2What's included in MAGI
- 3How the 3.8% net investment income tax applies
Common questions

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Sourced from a licensed fpPathfinder reference guide. Page copy is original summary content.



