PharmSurance Field Guide
Understanding
Medicare Costs
Premiums, deductibles, coinsurance — here's how Medicare's cost structure works, and what you can do to plan around it.

One of the most common surprises at 65: Medicare isn't free. Part A is premium-free for most people, but Part B carries a monthly premium, both have deductibles, and Original Medicare has no built-in cap on what you pay. Here's the full picture.

📅 Reviewed and updated for 2026

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Part A Costs
Hospital insurance
The basics

Most people pay no monthly premium for Part A — but there are deductibles and coinsurance if you're hospitalized.

How Part A costs are structured
  • Premium-free for most people (10+ years of Medicare taxes paid)
  • A deductible applies per benefit period — not per year, but per hospital stay
  • Cost-sharing structure changes the longer a hospital stay lasts
  • Skilled nursing facility stays carry their own cost-sharing structure after an initial covered period
Part B Costs
Medical insurance
The monthly premium everyone pays

You pay a Part B premium every month no matter which Medicare path you choose, set annually by the federal government.

How Part B costs are structured
  • Standard monthly premium, set annually by the federal government
  • An annual deductible applies
  • After the deductible, you're responsible for a share of the Medicare-approved amount
  • No built-in cap on that share — it continues indefinitely (unless you have Medigap)
  • Higher earners pay more via IRMAA (Income-Related Monthly Adjustment Amount)
IRMAA — who pays more
  • Higher individual and joint income levels trigger higher premiums — current thresholds are set annually
  • Based on your income from 2 years ago — so 2026 premiums are based on 2024 taxes
  • You can appeal IRMAA if your income has recently dropped due to a life event
How to Offset the Costs
Medigap, Advantage, MSPs, and Extra Help
The key options

Several programs exist to help manage what you actually pay — from supplemental insurance to income-based assistance programs.

Options to explore with an advisor
  • Medigap: helps cover your remaining share of costs and most deductibles, in exchange for its own monthly premium
  • Medicare Advantage: comes with a built-in yearly out-of-pocket cap
  • Medicare Savings Programs: if income is limited, the state may pay your Part B premium
  • Extra Help: reduces Part D costs for qualifying low-income beneficiaries
At a glance
How Medicare's cost structure fits together
Premium-Free
Part A (most people)
Standard Premium
Part B (everyone pays)
Per Stay
Part A deductible applies
Annual
Part B deductible applies
No Cap
Part B coinsurance (without Medigap)
Capped Annually
Part D out-of-pocket costs

Medicare costs come from a few different pieces working together: a possible Part A premium (free for most), a Part B premium everyone pays, deductibles for both parts, and ongoing cost-sharing with no built-in cap unless you add Medigap or choose Medicare Advantage, which includes one. Exact current figures change every year — a PharmSurance advisor can walk you through what applies to your specific situation right now.

Want to understand your actual situation?

A PharmSurance advisor can walk you through how costs work under different coverage options based on your health needs and medications.

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