Medicare Part D Premium Calculator
Calculate Medicare Part D IRMAA surcharge by income.
By Konstantin Iakovlev · Updated September 2026 · Source: Medicare.gov — How income affects your Medicare drug coverage premiums (2026)
Monthly Premium
$35.00
Annual Premium
$420.00
Part D Cost
| Plan Premium | $35.00 |
| IRMAA Surcharge | $0.00 |
| Monthly Total | $35.00 |
Planning a Roth conversion or a large sale? See how much income fits under the next IRMAA threshold: IRMAA calculator
Use the Medicare Part D 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
High earners enrolled in Medicare Part D pay more than the sticker premium, and this tool estimates that extra charge, the Income-Related Monthly Adjustment Amount (IRMAA), for 2026 based on your Modified Adjusted Gross Income (MAGI). Since the surcharge stacks on top of whatever your standard Part D plan already costs, seeing the number ahead of time lets you fold it into your budget instead of meeting it as an unwelcome surprise.
The Social Security Administration sets your 2026 Part D IRMAA from your MAGI two years back, typically your 2024 tax return, and applies it in tiers. Once your income clears a threshold, the surcharge goes directly to Medicare and climbs step by step as income rises. For 2026, the first tier kicks in when MAGI passes $109,000 for an individual or $218,000 for a couple married filing jointly, with each higher bracket adding more.
The output is an estimate; the SSA fixes your actual IRMAA from your official filings, so treat these numbers as a planning guide. Life events such as marriage, divorce, or a sharp change in earnings can shift your MAGI and the surcharge that follows it, which is worth revisiting when circumstances change. Lowballing your income on purpose tends to backfire, since the real figure can push you into a higher tier than expected.
Example: Individual with a MAGI of $130,000
- 1 Enter your 2024 Modified Adjusted Gross Income (MAGI). For this example, let's use $130,000. Set the filing status to 'Single'.
- 2 Based on the 2026 IRMAA thresholds, a MAGI of $130,000 for an individual falls into the tier above $109,000 and up to $137,000. For this tier, the estimated 2026 Part D IRMAA surcharge is $14.50 per month.
- 3 Your estimated 2026 Medicare Part D IRMAA surcharge is $14.50 per month. With the calculator's default $35 plan premium, the monthly total shows $49.50 and the annual premium $594.00.
- 4 This $14.50 per month will be added to your standard Medicare Part D plan premium. Over a year, this totals an additional $174.00 for your prescription drug coverage. This amount is paid directly to Medicare, not your Part D plan provider.
Source: Medicare.gov — How income affects your Medicare drug coverage premiums (2026) · Last updated: September 2026
Frequently Asked Questions
How much is the Medicare Part D IRMAA surcharge?
Is the Part D IRMAA based on current income?
Do Part D IRMAA surcharges change every year?
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.