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Medicare Part B Premium Calculator

Estimate your 2026 Medicare Part B premium including IRMAA income surcharges by tax filing status and MAGI.

Short answer

Medicare Part B Premium Calculator

$185Estimated monthly Part B premium

IRMAA uses your MAGI from two years ago. A one-time income spike (Roth conversion, home sale) can push you into a higher tier for a full year — you can appeal with Form SSA-44 after a life-changing event like retirement.

How it's calculated: Standard premium — no income surcharge. Adjust the inputs below to recalculate for your own numbers.

Disclaimer: Estimates only — not insurance, tax, or legal advice. Actual premiums depend on underwriting, state, carrier, claims history, and plan details. Confirm numbers with a licensed agent, broker, or Healthcare.gov before acting.

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$95,000

IRMAA uses your tax return from two years ago.

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Formula used

Part B premium = standard × IRMAA tier

Everyone pays the standard premium; higher incomes pay income-related monthly adjustment amounts (IRMAA) on top. Brackets are cliffs — one dollar over a threshold costs the full higher tier for the whole year.

Premium = Standard premium × tier(MAGI from 2 years ago)
Standard premium (2026)
~$185/mo
Top IRMAA tier
3.4× standard
Income lookback
2 years
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How to manage IRMAA exposure

Because IRMAA looks back two years, retirement-income planning should start at 63. Strategies: spread Roth conversions across years, use qualified charitable distributions to keep MAGI down, and time capital gains. Crossing a tier by $1 raises the whole year's premium.

  • Appeal with SSA-44 after retirement, divorce, or death of a spouse.
  • Part D drug plans carry their own smaller IRMAA surcharge.
  • Bracket thresholds adjust with inflation — recheck each fall.

FAQ

What is the Medicare Part B premium for 2026?

The standard premium is roughly $185/month for most beneficiaries. Higher-income beneficiaries pay IRMAA surcharges that can take the total to $560+/month at the top tier.

What income does IRMAA use?

Modified adjusted gross income from your tax return two years prior — so 2026 premiums use your 2024 return. MAGI here includes tax-exempt interest.

Can I appeal an IRMAA surcharge?

Yes, if you had a life-changing event: retirement, marriage, divorce, death of a spouse, or loss of pension income. File Form SSA-44 with documentation — retirement is the most common successful appeal.

How this calculator is built

Independently maintained

Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.

Sourced from primary data

Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.

Last editorial review

Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.

Editorial standards

See our editorial policy and disclaimer. Results are estimates, not advice.

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