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IRMAA bracket optimizer

IRMAA is a cliff. One dollar over a threshold can cost $1,000-$5,000 in extra Medicare premiums per person, per year. This calculator shows your exact tier, your headroom to the next cliff, and the cost if you cross it.

MAGI = AGI + tax-exempt municipal bond interest

Your current tier
Current tier
Standard
Per-person surcharge
$0/yr
Total household surcharge
$0/yr

Headroom to next cliff

$ until next cliff
$56,000
Cost if you cross
+$2105/yr

Crossing the next cliff costs an extra $2105/year in Medicare premiums. If you can keep your MAGI under $266,000, you avoid this.

All 2026 IRMAA tiers (Joint)

TierMAGI capPart B add /moPart D add /moAnnual /person
Standard$212,000$0$0$0
Tier 1$266,000$74$14$1052
Tier 2$334,000$185$35$2644
Tier 3$400,000$296$57$4235
Tier 4$750,000$407$79$5826
Tier 5$444$86$6356

IRMAA uses a 2-year lookback. Your 2026 surcharge is based on your 2024 tax return. If you've recently retired or had a life-changing event, you can appeal via Form SSA-44. Detailed guide in Medicare Course Module 10.