Medicare Calculator 2026 – Part B & D Premiums

Estimate monthly and annual Medicare costs, including 2026 income-related surcharges (IRMAA).

Income and coverage assumptions

Medicare Premium Year

The year premiums are paid. Medicare generally uses MAGI from two years earlier.

Modified Adjusted Gross Income (MAGI)

For 2026 premiums, Social Security generally uses MAGI from your 2024 federal tax return. Life-changing events may support a lower IRMAA determination.

$ USD

Tax Filing Status

IRMAA thresholds depend on the filing status on the tax return Medicare uses.

Part D Plan Premium

Your prescription drug plan premium. IRMAA is added to this amount and paid separately.

$ per month

Medigap or Medicare Advantage Premium

Optional planning input. Plan premiums vary by coverage, provider, location, and enrollee.

$ per month

—

Estimated total monthly Medicare premiums

Part B premium—

Part B IRMAA above standard—

Part D IRMAA surcharge—

Part D plan premium—

Supplemental / Advantage premium—

Annual total—

IRMAA tier—

Tax return year generally used—

Part A, deductibles, copays, coinsurance, penalties, and out-of-pocket care are not included.

IRMAA tier comparison

The displayed total combines Part B and the Part D IRMAA surcharge; it excludes your chosen Part D plan and supplemental premiums.

MAGI range	Part B	Part D IRMAA	B + D IRMAA
Income tiers	—	—	Enter your details above

How Medicare IRMAA works

Most people enrolled in Part B pay the standard premium. Higher-income beneficiaries pay an Income-Related Monthly Adjustment Amount for Part B and Part D. IRMAA uses modified adjusted gross income—adjusted gross income plus tax-exempt interest—from a prior federal tax return, generally two years earlier.

The 2026 standard Part B premium is $202.90 per month. This calculator applies the official 2026 filing-status thresholds and adds an optional Part D plan premium and Medigap or Medicare Advantage premium. It does not estimate deductibles, copays, coinsurance, late-enrollment penalties, or medical spending.

Planning Medicare with retirement income

Taxable withdrawals from a 401(k) or Traditional IRA, Roth conversions, capital gains, dividends, interest, pensions, and other income can affect MAGI and future IRMAA. Qualified Roth IRA withdrawals generally do not increase MAGI. Coordinate investment sales and account withdrawals across tax years rather than treating Medicare as an isolated premium.

If income fell because of an eligible life-changing event, you may ask Social Security to use more recent information. Review official 2026 Medicare premium and IRMAA amounts. Rules last verified July 16, 2026.

Frequently Asked Questions

Who is eligible for Medicare?

Americans 65+ are eligible for Medicare. Those under 65 qualify with certain disabilities, End-Stage Renal Disease, or ALS. Premium-free Part A requires 10+ years of Medicare tax contributions (40 quarters).

What are the parts of Medicare?

Part A covers hospital care; Part B covers outpatient/medical services; Part C (Medicare Advantage) are private plans combining A+B; Part D covers prescription drugs. Original Medicare = Part A + Part B.

What does Medicare cost in 2026?

The standard 2026 Part B premium is $202.90 per month. Higher-income beneficiaries pay Part B and Part D IRMAA, while Part D plan, Medicare Advantage, and Medigap premiums vary by plan. Most beneficiaries do not pay a Part A premium.

What is the difference between Medicare and Medicaid?

Medicare is federal insurance primarily for people 65+ regardless of income. Medicaid is a federal-state program for low-income individuals of all ages. Some people qualify for both (dual eligibility).

When should I enroll in Medicare?

Sign up during your Initial Enrollment Period — the 7-month window around your 65th birthday (3 months before through 3 months after). Late enrollment in Part B carries a 10% premium penalty per year delayed without qualifying coverage.

Medicare Calculator 2026 – Part B &amp; D Premiums

Income and coverage assumptions

Monthly premium breakdown

How Medicare IRMAA works

Planning Medicare with retirement income

Frequently Asked Questions

Medicare Calculator 2026 – Part B & D Premiums