Medicare costs in 2026 depend on which parts you have, your income, and how much healthcare you use. For most beneficiaries, the monthly premium cost is predictable. The out-of-pocket cost is not — without supplemental coverage, Original Medicare has no annual out-of-pocket maximum.
This guide covers every Medicare cost for 2026 using official CMS data — premiums, deductibles, coinsurance, and the IRMAA surcharges that catch higher-income retirees off guard.
Medicare Part A Costs 2026 (Hospital Insurance)
Most Medicare beneficiaries pay $0 for Part A — it is premium-free for anyone who worked and paid Medicare taxes for at least 40 quarters (10 years). If you or your spouse did not meet that threshold, you pay $284/month for 30–39 quarters of work history or $518/month for under 30 quarters.
Part A cost-sharing when you use it:
- Hospital deductible: $1,736 per benefit period (up $60 from 2025)
- Days 1–60: $0 after the deductible
- Days 61–90: $433/day coinsurance
- Days 91+: $866/day (lifetime reserve days; you have 60 total)
- Skilled nursing facility (days 21–100): $216.50/day coinsurance
The Part A deductible applies per benefit period, not per year. A benefit period begins when you are admitted to a hospital and ends 60 days after discharge. Multiple hospitalizations in a year can each trigger their own $1,736 deductible.
Medicare Part B Costs 2026 (Medical Insurance)
The standard Part B premium is $202.90/month in 2026 — up $17.90 from the 2025 premium of $185.00. Most beneficiaries pay this standard amount. Higher-income beneficiaries pay more due to IRMAA.
Part B cost-sharing:
- Annual deductible: $283/year
- Coinsurance after deductible: 20% of Medicare-approved amount — no cap
- Excess charges: If your doctor does not accept Medicare assignment, they may charge up to 15% above Medicare rates (excess charges)
The absence of an out-of-pocket maximum in Original Medicare is the most important cost feature to understand. A beneficiary with cancer, heart disease, or any serious chronic condition can face tens of thousands in 20% coinsurance annually without Medigap coverage.
Medicare Part D Costs 2026 (Prescription Drug Coverage)
Part D premiums vary by plan and are set by private insurers. The national average Part D premium runs $30–$60/month. Standard Part D cost-sharing:
- Annual deductible: Up to $590/year (varies by plan)
- Tier 1 (generic): Typically $0–$15 copay
- Tier 2–3 (preferred/non-preferred brand): $30–$100 copay or 25–50% coinsurance
- Out-of-pocket cap: $2,000 in 2026 (new cap established by the Inflation Reduction Act)
The $2,000 Part D out-of-pocket cap is significant — it replaced the previous "donut hole" structure and provides a true ceiling on drug costs for the first time.
Medigap (Medicare Supplement) — Filling the Gaps
Medigap plans cover the cost-sharing gaps in Original Medicare — primarily the 20% Part B coinsurance and Part A deductibles. Plan G is the most comprehensive plan available to new Medicare enrollees in 2026 (Plan F was closed to new enrollees as of 2020).
| Medigap Plan | Covers Part B Coinsurance | Covers Part A Deductible | Avg Monthly Premium (age 65) |
|---|---|---|---|
| Plan G | 100% | 100% | $100–$180 |
| Plan N | 100% (with copays) | 100% | $80–$150 |
| Plan K | 50% | 50% | $50–$90 |
| Plan L | 75% | 75% | $70–$120 |
| Plan F (grandfathered) | 100% + excess charges | 100% + Part B deductible | $150–$250 |
Total Annual Medicare Cost — Three Scenarios
| Scenario | Part B | Part D | Medigap | Out-of-Pocket | Annual Total |
|---|---|---|---|---|---|
| Healthy, no Medigap | $2,435 | $480 | $0 | $283 (deductible only) | ~$3,200 |
| Healthy, with Plan G | $2,435 | $480 | $1,680 | $283 | ~$4,900 |
| Chronic condition, no Medigap | $2,435 | $480 | $0 | $8,000–$20,000+ | $11,000–$23,000+ |
| Chronic condition, with Plan G | $2,435 | $480 | $1,680 | $283 | ~$4,900 |
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