ACA MAGI optimizer
Pre-Medicare healthcare costs depend almost entirely on your modified adjusted gross income. This calculator shows where your projected retirement MAGI lands across the four ACA zones (Medicaid floor, sweet spot, standard PTC, over-cliff).
Cost-sharing reductions (CSRs) lower your deductibles + copays in addition to PTC. Best balance of subsidies and plan quality.
FPL thresholds use 2025 HHS Poverty Guidelines (the relevant year for 2026 plan-year subsidies). Educational estimate; doesn't model state-by-state Medicaid eligibility nuances.
Create a free account and we'll plug your profile in automatically — and place this tool inside your full roadmap.
FAQ
- What counts as MAGI for ACA?
- AGI + tax-exempt interest + non-taxable Social Security. Includes Roth conversions, capital gains, dividends, IRA withdrawals, wages. Roth principal withdrawals do NOT add to MAGI.
- What is the 400% FPL cliff?
- Pre-2021, ACA Premium Tax Credits ended sharply at 400% FPL. ARPA (2021) and IRA (2022) softened this temporarily; if not extended past plan year 2025 the original cliff returns for 2026.
- What about IRMAA?
- IRMAA (Medicare Part B/D surcharge) starts at 65, based on MAGI from 2 years prior. So conversions in your early 60s can hit ACA subsidies today AND IRMAA at 65 — model both.
Related calculators
Educational guidance only. Not legal, tax, or individualized investment advice. We do not recommend individual securities or guarantee outcomes.