Medicare Part B Premium Calculator

Calculate Medicare Part B premium with IRMAA surcharge by income.
$

Monthly Premium

$202.90

Annual Cost

$2,434.80

Part B Premium

Base Premium$202.90
IRMAA Surcharge$0.00
Monthly Total$202.90
Annual Total$2,434.80

Use the Medicare Part B Premium Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Our Medicare Part B Premium Calculator helps you estimate your monthly premium, including any Income-Related Monthly Adjustment Amount (IRMAA) surcharge, for 2026. Understanding your 2026 Part B premium is crucial for accurate financial planning in retirement, as it directly impacts your monthly budget. This calculator provides a personalized estimate based on your reported income.

Your 2026 Medicare Part B premium is primarily determined by your Modified Adjusted Gross Income (MAGI) from two years prior (2024). We use the official 2026 IRMAA brackets and their corresponding surcharges to add to the standard Part B premium. The calculator applies these tiers to your input MAGI to determine your total estimated monthly premium.

Remember that the MAGI used for 2026 Part B premiums is from your 2024 tax return; significant income changes since then might not be reflected. Be careful to include all income sources when calculating your MAGI, as even tax-exempt interest can contribute to IRMAA. A common mistake is forgetting to account for IRMAA, which can significantly increase your premium.

Example: High Earning Couple's 2026 Part B Premium

  1. 1 **Step 1: Input Modified Adjusted Gross Income (MAGI)** John and Jane Smith, a married couple filing jointly, had a 2024 MAGI of $400,000. They want to calculate their individual 2026 Medicare Part B premiums.
  2. 2 **Step 2: Apply 2026 IRMAA Brackets** For a MAGI of $400,000 (married filing jointly), their income falls into the 2026 IRMAA bracket of $338,001 to $422,000. The standard 2026 Part B premium is $174.70. For this bracket, the IRMAA surcharge is an additional $349.40, making their total individual premium $524.10 ($174.70 + $349.40).
  3. 3 **Step 3: Calculate Total Monthly Premium** Each spouse will pay $524.10 per month for their Medicare Part B premium in 2026.
  4. 4 **Step 4: Context and Impact** This example shows how a higher income can lead to a substantial increase in Medicare Part B premiums due to IRMAA. For John and Jane, their combined monthly Part B premium will be $1,048.20, significantly more than the standard premium. This highlights the importance of understanding IRMAA for retirement budgeting.

Source: CMS — Centers for Medicare & Medicaid Services · Last updated: April 2026

Frequently Asked Questions

What is the standard Medicare Part B premium for 2026?
The standard Medicare Part B monthly premium for 2026 is $185.00. Most beneficiaries pay this amount, which is typically deducted directly from Social Security payments.
What is IRMAA and when does it apply?
IRMAA (Income-Related Monthly Adjustment Amount) is a surcharge added to your Part B premium if your modified AGI exceeds $106,000 for single filers or $212,000 for married filing jointly. The surcharge is based on income from two years prior.
Can I appeal a Medicare IRMAA surcharge?
Yes. If you experienced a life-changing event such as retirement, divorce, or death of a spouse that reduced your income, you can file Form SSA-44 to request a reduction based on your current income instead of the two-year-old tax return.

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