Medicare Cost Estimator 2026
Medicare premiums are a major component of your healthcare costs in retirement. This estimator calculates your 2026 Medicare premiums for Parts A, B and D based on your income and coverage choices. Part A covers hospital care, Part B covers outpatient medical services, and Part D covers prescription drugs. Higher-income beneficiaries pay additional surcharges called IRMAA (Income-Related Monthly Adjustment Amount) based on your modified adjusted gross income from two years prior. Enter your filing status, 2024 income, Part A eligibility (based on quarters worked), and whether you'll enroll in Part D prescription drug coverage. The calculator displays your estimated monthly and annual Medicare costs. Reference tables show the complete 2026 IRMAA brackets for both single and joint filers, helping you understand how income thresholds affect your premiums and plan ahead for retirement income timing.
Estimated total monthly Medicare premium: $241.89 (Parts A + B + D). Annual estimate: $2,903.
2026 Medicare premium reference
Part B IRMAA brackets (single filer, 2024 MAGI)
| 2024 MAGI (single) | 2026 Part B premium |
|---|---|
| $109,000 or less | $202.90/month |
| $109,001 to $137,000 | $284.10/month |
| $137,001 to $171,000 | $405.80/month |
| $171,001 to $205,000 | $527.50/month |
| $205,001 to less than $500,000 | $649.20/month |
| $500,000 and above | $689.90/month |
For married filing jointly, the thresholds are doubled (e.g., $218,000 or less for the lowest bracket), with the top bracket starting at $750,000. Higher-income enrollees who have Part D also pay a Part D IRMAA surcharge, ranging from $14.50 to $91.00 per month in 2026 depending on the income tier. Source: CMS 2026 fact sheet.
Part A premiums (2026)
Most enrollees pay $0 for Part A if they or their spouse worked 40 or more quarters. Those with 30-39 quarters pay $311/month; fewer than 30 quarters, $565/month. The Part A inpatient deductible is $1,736 per benefit period in 2026. Source: Medicare.gov.
Medicare Advantage and Medigap
Medicare Advantage (Part C) replaces Parts A, B, and usually D with a single private plan. Many plans have $0 premiums but charge copays for services and restrict you to a provider network. Medigap (Medicare Supplement) policies work alongside Original Medicare to cover cost-sharing, but cannot be used with Medicare Advantage. Premiums for both vary widely by plan and location and cannot be estimated without plan-specific data.
Understanding the cost-sharing structure
Premiums are only part of your Medicare costs. You will also face deductibles and coinsurance when you use services.
Part A deductible ($1,736 in 2026) applies per benefit period (not per year). A new benefit period begins each time you are admitted to a hospital or SNF after being out for 60 consecutive days. Coinsurance applies for hospital stays beyond 60 days.
Part B deductible is $283 per year in 2026. After meeting this, you typically pay 20% of the Medicare-approved amount for most services.
Part D costs include your plan premium, annual deductible (capped at $615 in 2026), and copays or coinsurance at the pharmacy. The Inflation Reduction Act capped out-of-pocket Part D drug costs starting in 2025; the cap is $2,100 for 2026.
IRMAA is a cliff, and it looks two years back
The detail that catches new enrollees off guard is that your 2026 Medicare surcharge is set by your 2024 tax return, not your current income. This two-year look-back means the year you sell a house, convert a traditional IRA to a Roth, or realize a large capital gain can quietly inflate your premiums two years later, often after you have already retired and your income has dropped.
IRMAA is also a cliff, not a gradient. Cross a threshold by a single dollar and the full surcharge for that tier applies to the whole year. A single filer with 2024 MAGI of $109,000 pays the standard $202.90 Part B premium, but at $109,001 the premium jumps to $284.10, a difference of roughly $974 across twelve months for that one extra dollar. Watching those thresholds as you plan withdrawals is worth real money.
Two practical notes. If a life-changing event such as retirement, divorce, or the death of a spouse has cut your income since 2024, you can ask the Social Security Administration to use current figures by filing Form SSA-44 rather than accepting the look-back. And remember that premiums are only the visible cost: the Part B deductible, the Part A per-benefit-period deductible, and Part D cost-sharing all sit on top of the monthly figure this tool estimates.
Medicare cost estimator: frequently asked questions
When does Medicare coverage start?
Medicare eligibility generally begins at age 65. You can enroll during your Initial Enrollment Period (IEP), which spans the 3 months before your 65th birthday month, the month of your birthday, and the 3 months after (7 months total). If you delay enrollment without qualifying coverage from an employer, you may face late enrollment penalties. Details are published by CMS at medicare.gov.
What does Part A cover versus Part B?
Part A is hospital insurance and covers inpatient hospital stays, skilled nursing facility care (up to limits), hospice, and some home health care. Most people pay no Part A premium if they or their spouse worked and paid Medicare taxes for at least 40 quarters (10 years). Part B is medical insurance and covers outpatient services, doctor visits, preventive services, and durable medical equipment. Part B has a standard monthly premium ($202.90 in 2026) that most enrollees pay.
What is IRMAA?
IRMAA stands for Income-Related Monthly Adjustment Amount. Higher-income Medicare beneficiaries pay more for Parts B and D. The surcharge is based on your MAGI (Modified Adjusted Gross Income) from two years prior: your 2024 income determines your 2026 IRMAA. SSA notifies you if you owe IRMAA. For 2026, single filers with MAGI above $109,000 and joint filers above $218,000 pay more than the standard Part B premium. IRMAA brackets are published annually by CMS.
What is Medigap (Medicare Supplement Insurance)?
Medigap policies are sold by private insurers and help pay costs that Original Medicare does not cover, such as copayments, coinsurance, and deductibles. Medigap plans are standardized (labeled A through N) and regulated by state and federal law. You must have Original Medicare (Parts A and B) to buy a Medigap policy. Medigap does not cover prescription drugs; you would need a separate Part D plan. Medicare.gov has a plan-finding tool to compare options in your area.
What is Medicare Advantage and how does it differ from Original Medicare?
Medicare Advantage (Part C) is an alternative to Original Medicare offered by private insurers approved by CMS. It bundles Parts A, B, and usually D into a single plan. Many Part C plans have $0 monthly premiums but charge copays, require in-network providers, and may need referrals for specialists. Original Medicare lets you see any Medicare-accepting provider nationwide. The best choice depends on your health needs, preferred doctors, and location.
What is the Part B late enrollment penalty?
If you do not enroll in Part B when first eligible and do not have qualifying coverage (such as employer-sponsored insurance from active employment), your premium permanently increases by 10% for each 12-month period you were eligible but not enrolled. For example, if you delayed 2 years, your premium rises by 20% for as long as you have Part B. There is no cap on this penalty. CMS details are at medicare.gov/basics/costs/medicare-costs.
Official sources
- 2026 Part B premiums and deductibles: CMS, 2026 Medicare Parts B Premiums and Deductibles Fact Sheet.
- Medicare costs overview: Medicare.gov, Medicare Costs at a Glance.
- Medicare and You handbook: CMS, Medicare and You (PDF).
Reviewed by the CalculatorHub team, edited by James Graham, 11 July 2026. See our methodology. General information only, not financial or medical advice.