Advanced calculator · Free
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)
| Tier | MAGI cap | Part B add /mo | Part D add /mo | Annual /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.