Medicare costs in 2025 depend on which parts you use and when you enrolled

Medicare has four parts, and each one costs money in a different way. Part A (hospital insurance) is free for most people at 65. Part B (doctor visits and outpatient care) costs a monthly premium that changes every year. Part D (prescription drugs) has its own monthly premium. Part C (Medicare Advantage) bundles A, B, and D into one plan, usually with a lower or zero monthly premium but higher costs when you use care. The amount you pay depends on your income, when you first signed up, and which plan you choose.

Your total Medicare cost is not just the premium — it includes deductibles you pay before coverage kicks in, copays and coinsurance when you use services, and penalties if you sign up late. Understanding each part's costs helps you decide which combination of coverage makes sense for your health and budget.

Key Takeaways

  • Part B premiums for 2025 start at $174.70 per month for most people, but those with higher incomes pay more through an income-related surcharge.
  • Part A is free at 65 if you or your spouse paid Medicare taxes for at least 10 years, but you pay a deductible ($1,676 in 2025) when you go to the hospital.
  • Part D prescription drug premiums vary by plan and pharmacy, ranging from around $7 to $100+ per month depending on the drugs you take.
  • If you delay signing up for Part B or Part D after you turn 65, you may pay a permanent penalty on top of your regular premium for as long as you have Medicare.
  • Medicare Advantage plans often have $0 monthly premiums but charge copays and coinsurance when you use doctors, hospitals, or specialists.

Part A costs: Hospital care and the deductible

Most people do not pay a monthly premium for Part A because they or their spouse paid Medicare taxes while working. If you did not work long enough to may have access to, you can buy Part A for $278 to $505 per month in 2025, depending on how many years you worked.

Even if Part A is free, you pay money when you use it. In 2025, you pay a deductible of $1,676 for each hospital stay. After you pay that, Medicare covers all hospital costs for the first 60 days. Days 61 through 90 cost you $419 per day. If you stay longer than 90 days, costs rise further. For skilled nursing care (like rehabilitation after surgery), you pay nothing for the first 20 days, then $209.50 per day for days 21 through 100.

Part B costs: Doctor visits and outpatient services

Part B has a monthly premium and an annual deductible. For 2025, the standard Part B premium is $174.70 per month. However, if your income was over $97,000 as a single person or $194,000 as a married couple filing jointly (based on your tax return from two years ago), you pay more. The surcharge ranges from $52.10 to $208.90 extra per month, depending on your exact income.

After you pay the Part B deductible ($240 in 2025), Medicare covers 80% of approved services and you pay 20%. For example, if your doctor visit costs $100 and the deductible is met, you pay $20. Some services, like preventive care (annual wellness visits, cancer screenings, vaccines), have no copay or coinsurance after the deductible.

If you did not sign up for Part B when you first became may be able to access at 65, you pay a permanent penalty. The penalty is 10% of the standard premium for each full year you delayed, added to your premium for life. If you delayed for three years, you pay 30% extra forever.

Part D costs: Prescription drugs

Part D premiums vary widely because many different insurance companies offer Part D plans. In 2025, premiums typically range from around $7 to over $100 per month, depending on which drugs the plan covers and which pharmacies it uses. You choose a plan during the annual enrollment period (October 15 to December 7 each year), and the plan you pick determines your monthly cost.

Beyond the premium, you also pay out-of-pocket costs at the pharmacy. Most plans have a deductible (often $0 to $550 in 2025), then you pay a copay or coinsurance for each prescription. The amount depends on whether the drug is on the plan's formulary (the list of covered drugs) and which tier it is on. Tier 1 drugs (generics) might cost $5 to $10, while Tier 4 drugs (brand-name) might cost $50 to $100 or more per prescription.

If you do not sign up for Part D when you first become may be able to access, you pay a permanent penalty of about 1% of the national average Part D premium for each month you delayed. That penalty is added to your premium whenever you do enroll.

Medicare Advantage (Part C) costs and trade-offs

Medicare Advantage plans combine Part A, Part B, and Part D into one plan sold by private insurance companies. Many Advantage plans charge $0 per month in premiums, which can save money compared to Original Medicare plus a separate Part D plan. However, the trade-off is that you pay when you use care.

Advantage plans typically charge a copay for each doctor visit ($10 to $50), a copay for urgent care ($50 to $100), and a copay for emergency room visits ($100 to $300, sometimes waived if admitted). Specialist visits cost more than primary care visits. Hospital stays may have a per-day copay for the first few days. Prescription drugs are included in the plan but have their own copays based on the drug tier.

Advantage plans also have an out-of-pocket maximum, usually $7,550 to $10,000 per year in 2025. Once you reach that limit, the plan pays 100% of covered services for the rest of the year. Original Medicare does not have an out-of-pocket maximum, which means costs can be higher if you have a serious illness or injury.

Income-related premiums and how they work

If your income is above a certain level, you pay higher premiums for Part B and Part D. Medicare uses your Modified Adjusted Gross Income (MAGI) from your tax return from two years ago. For 2025, the income thresholds are $97,000 for single filers and $194,000 for married couples filing jointly.

The surcharge is added to your regular Part B premium and is based on income brackets. A single person with MAGI between $97,001 and $123,000 pays an extra $52.10 per month. Someone with MAGI over $499,000 pays an extra $208.90 per month. Part D has similar brackets and surcharges.

If your income drops (for example, because you retired or had a major life change), you can ask Medicare to recalculate your premiums using your current year's income instead. You must request this within 60 days of the life event.

Medigap and other supplemental coverage costs

Medigap is supplemental insurance sold by private companies that helps pay the costs Original Medicare does not cover — deductibles, copays, and coinsurance. Medigap premiums vary by plan type, your age, your location, and the insurance company. Plans range from about $100 to $400+ per month.

If you enroll in Medigap within six months of turning 65 and signing up for Part B, insurance companies cannot deny you or charge you more based on health problems. If you wait longer, they can. Some states have different rules, so check with your state insurance commissioner's office.

Medigap is different from Medicare Advantage. With Medigap, you keep Original Medicare and add supplemental coverage. With Advantage, you replace Original Medicare with a private plan.

When and how to pay your premiums

Part B and Part D premiums are usually deducted automatically from your Social Security check each month. If you do not receive Social Security, Medicare sends you a bill. You can change how you pay by contacting Medicare at 1-800-MEDICARE.

Part A deductibles and copays are billed by the hospital or facility after you receive care. Part B copays and coinsurance are billed by your doctor's office. Part D copays are paid at the pharmacy when you pick up your prescription.

If you have a Medicare Advantage plan, premiums are deducted from Social Security or billed separately, depending on the plan. Copays are paid at the time of service — at the doctor's office, hospital, or pharmacy.

Frequently Asked Questions

Do I have to pay for Part A if I worked long enough?

If you or your spouse paid Medicare taxes for at least 10 years, Part A is free at 65. You do not pay a monthly premium, but you still pay the hospital deductible and copays when you use hospital or skilled nursing care.

What happens if I miss the important date to sign up for Part B?

If you do not sign up for Part B when you turn 65, you pay a permanent 10% penalty on your premium for each full year you delayed. This penalty stays with you for life, even if you sign up later. The exception is if you had employer coverage when you turned 65 — then you have eight months after that coverage ends to sign up without penalty.

Can I change my Part D plan if the premium goes up?

Yes. Every year during the annual enrollment period (October 15 to December 7), you can switch to a different Part D plan. You can also switch if you have a major life change like losing employer coverage or moving to a new state where your current plan is not available.

How much will I save with a Medicare Advantage plan?

Savings depend on how much care you use. If you rarely see doctors, a $0-premium Advantage plan saves money. If you have chronic conditions and see specialists often, you might pay more in copays than you would with Original Medicare plus Medigap. Compare the plans available in your area and your expected health care use.

Do I pay taxes on Medicare?

No. Medicare premiums are not tax-deductible, and you do not pay income tax on Medicare benefits. However, if your total income (including half of your Social Security) exceeds certain thresholds, up to 85% of your Social Security benefits may be taxable — this is separate from Medicare costs.