Medicare Premium Calculator (IRMAA)
Calculate Medicare Part B and Part D premiums with IRMAA surcharges based on your income.
By Konstantin Iakovlev · Updated September 2026 · Source: CMS — 2026 Medicare Parts A & B Premiums and Deductibles
Monthly Premium
$202.90
Annual Cost
$2,434.80
Premium Breakdown
| Part B Standard Premium | $202.90 |
| Part B IRMAA Surcharge | $0.00 |
| Total Part B Monthly | $202.90 |
| Part D IRMAA Surcharge | $0.00 |
| Total Part D Monthly | $0.00 |
| Total Monthly Premium | $202.90 |
| Total Annual Cost | $2,434.80 |
IRMAA Thresholds (Single)
| Above $109,000.00 | +$81.20 Part B / +$14.50 Part D |
| Above $137,000.00 | +$202.90 Part B / +$37.50 Part D |
| Above $171,000.00 | +$324.60 Part B / +$60.40 Part D |
| Above $205,000.00 | +$446.30 Part B / +$83.30 Part D |
| $500,000.00 or more | +$487.00 Part B / +$91.00 Part D |
Use the Medicare Premium Calculator (IRMAA) 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
This calculator determines your Medicare Part B premium and any income-related surcharge on Part D, specifically accounting for the Income-Related Monthly Adjustment Amount (IRMAA). IRMAA can significantly increase your premiums if your income exceeds certain thresholds, making this crucial for accurate financial planning in retirement.
You enter your Modified Adjusted Gross Income (MAGI) from the tax return two years back, and the calculator compares it with the 2026 IRMAA brackets published by the Centers for Medicare & Medicaid Services (CMS) to find your surcharge. The Part D line shows only that surcharge; your drug plan's own premium comes on top of it.
Be sure to use your MAGI from the correct tax year (usually two years prior to the current Medicare enrollment year). Don't forget that IRMAA affects both Part B and Part D premiums, so factor in both surcharges for a complete picture.
Example: John's 2026 Medicare Premiums
- 1 John, single, had a 2024 Modified Adjusted Gross Income (MAGI) of $120,000. He wants to know his 2026 Medicare Part B and Part D premiums.
- 2 For 2026, a single individual with a MAGI above $109,000 and up to $137,000 falls into the first IRMAA bracket. This means John will pay the standard Part B premium ($202.90/month) plus an IRMAA of $81.20/month, and his Part D premium will have an additional IRMAA of $14.50/month.
- 3 John's total 2026 Medicare Part B premium will be $284.10/month ($202.90 + $81.20). His Part D premium will be his plan's base premium plus an additional $14.50/month due to IRMAA. The calculator's total, $298.60 a month or $3,583.20 a year, is Part B plus that $14.50 surcharge; his plan's own premium comes on top.
- 4 John's higher income significantly increases his Medicare costs. He should factor this additional expense into his retirement budget and consider strategies to manage his MAGI in future years.
Source: CMS — 2026 Medicare Parts A & B Premiums and Deductibles · Last updated: September 2026
Frequently Asked Questions
How much is the Medicare Part B premium for 2026?
What is IRMAA and how does it affect Medicare costs?
How can I reduce my Medicare IRMAA surcharge?
You might also need
HSA Calculator 2026 — Contribution Limits & Triple Tax Savings
Calculate HSA tax savings, investment growth, and projected balance at retirement. See the triple tax advantage in action. Based on 2026 IRS contribution limits.
BMI Calculator — Body Mass Index, Category & Healthy Range
Calculate your Body Mass Index (BMI) from height and weight. See your BMI category, healthy weight range, and what it means. Free, instant results with chart.
Calorie Calculator (TDEE)
Calculate daily calories for maintenance, weight loss, or gain using the Mifflin-St Jeor equation and your activity level.