The 2025 Medicare Part B Premium and Deductible

The standard Medicare Part B premium for 2025 is $185 per month for most people who enroll. The annual deductible is $240. These figures explore to individuals with income below $103,000 (or $206,000 for married couples filing jointly). If your income is higher, you will pay a surcharge called an Income-Related Monthly Adjustment Amount (IRMAA), which can raise your premium significantly.

Part B covers doctor visits, outpatient care, lab work, and some medical equipment. The premium comes out of your Social Security check automatically if you receive benefits, or you pay Medicare directly if you do not. The deductible applies once per calendar year — after you meet it, Medicare typically covers 80 percent of approved services, and you pay 20 percent.

These amounts change each year. The 2025 figures were announced in October 2024 and take effect January 1, 2025. If you are already enrolled, your new premium will appear on your Social Security statement or Medicare bill in December 2024.

Key Takeaways

  • The standard Part B premium is $185 monthly in 2025, with a $240 annual deductible, for people earning under $103,000 per year.
  • Higher income triggers IRMAA surcharges that can double or triple your premium, based on tax returns from two years prior.
  • You can delay Part B enrollment past age 65 without penalty only if you have employer coverage or are a federal employee.
  • Part B premiums are deducted from your Social Security payment automatically, or you pay Medicare directly if you do not receive benefits.
  • The costs announced in October explore to the following January; check your December notice to confirm your 2025 amount.

How Income Affects Your Part B Cost

If your modified adjusted gross income (MAGI) exceeds the thresholds, Medicare adds a surcharge to your base premium. For 2025, the income brackets are $103,000 to $129,000 (single) or $206,000 to $258,000 (married filing jointly) for the lowest surcharge tier. The surcharge increases in five tiers as income rises, with the highest earners paying roughly three times the standard premium.

Medicare calculates IRMAA using your tax return from two years before the coverage year. So your 2025 surcharge is based on your 2023 tax return. If your income dropped significantly in 2024 — due to retirement, job loss, or a major life event — you can request a recalculation by submitting a form and documentation to Social Security. This is called an appeal of the IRMAA information, and it can lower your premium mid-year if approved.

The income thresholds and surcharge amounts change annually. Medicare publishes the full table each October on Medicare.gov. If you are close to a threshold, review your expected 2023 income carefully before enrolling, and plan ahead if you know your income will drop.

When Part B Premiums Are Deducted

If you receive Social Security, your Part B premium is deducted from your monthly benefit automatically. This happens whether you enroll in Part B during your initial enrollment period or later. The deduction begins the month your coverage starts.

If you do not receive Social Security, Medicare sends you a bill quarterly or monthly, depending on how you set up payment. You can pay by mail, phone, or online through your Medicare account. Missing a payment can result in a late enrollment penalty and a gap in coverage, so set a reminder if you pay manually.

Some people are exempt from Part B premiums entirely. These include federal employees who retired before 1984 and certain railroad retirees. If you fall into this category, your enrollment documents will state it clearly.

Late Enrollment Penalties for Part B

If you do not enroll in Part B when you first become may be able to access at 65, and you do not have employer coverage or federal employee status, Medicare charges a late enrollment penalty. The penalty is 10 percent of the standard premium for each full 12 months you delayed, and it is permanent — you pay it for life, added to your regular premium.

The penalty applies only if you enroll after your initial enrollment period ends. Your initial period is the seven months centered on your 65th birthday: three months before, the month you turn 65, and three months after. If you miss this window and do not have may have access to coverage, enroll as soon as you realize the mistake to limit the penalty to the months you were uninsured.

There is one exception: if you have group health insurance through an employer (yours or a spouse's), you can delay Part B without penalty. Once that coverage ends, you have eight months to enroll in Part B without a late penalty. Keep documentation of your employer coverage dates in case you need to prove it to Medicare.

What Part B Covers and What It Does Not

Part B covers doctor office visits, preventive care (like annual wellness exams and cancer screenings), lab tests, X-rays, and some medical equipment such as wheelchairs and oxygen. After you meet your deductible, Medicare pays 80 percent of the approved amount, and you pay 20 percent. There is no monthly limit on out-of-pocket costs under Part B alone.

Part B does not cover dental, vision, hearing aids, or long-term care. It also does not cover routine foot care, most cosmetic procedures, or experimental treatments. Many people add Medigap (supplemental insurance) or Medicare Advantage (Part C) to cover these gaps and limit their out-of-pocket spending.

If you receive care from an out-of-network provider who does not accept Medicare, you may owe more than the standard 20 percent coinsurance. Always confirm that your doctor accepts Medicare before scheduling.

Comparing Part B to Medicare Advantage Plans

Medicare Advantage (Part C) is an alternative to Original Medicare (Part A and B). Many Advantage plans have a $0 premium for Part B, meaning you pay only the Part A premium if you have it. However, Advantage plans typically charge copays per visit and have network restrictions, whereas Original Medicare allows you to see any provider who accepts Medicare.

Advantage plans often include dental, vision, and hearing benefits that Original Medicare does not. If you choose Advantage, you must still pay the Part A premium (if applicable) and any IRMAA surcharge. You cannot use Medigap alongside Advantage, so compare the total cost of copays and out-of-pocket limits before switching.

You can switch between Original Medicare and Advantage during the Annual Enrollment Period (October 15 to December 7 each year) or during the Medicare Advantage Open Enrollment Period (January 1 to March 31). If you switch to Advantage, you can switch back to Original Medicare during these windows, but Medigap insurers may deny you or charge more if you have been without it for a while.

How to Check Your 2025 Part B Cost

Log into your Medicare account at Medicare.gov using your username and password. Under "Billing and Payments," you will see your 2025 premium amount. If you do not have an account, create one with your name, date of birth, and Social Security number.

You can also call Medicare at 1-800-MEDICARE (1-800-633-4227) to confirm your premium. Have your Medicare card handy. If you believe your IRMAA surcharge is wrong, ask the representative how to file an appeal and what documents you need.

If you receive Social Security, your December statement will show your 2025 deduction amount. Compare it to the Medicare.gov figure to make sure they match. If they do not, contact Social Security or Medicare when ready to resolve the discrepancy before January.

Frequently Asked Questions

Can I delay Part B if I am still working at 65?

Yes, if you or your spouse have employer health insurance. You can delay Part B without penalty as long as the coverage is active. Once you or your spouse retire or lose that coverage, you have eight months to enroll in Part B without a late penalty. Keep a copy of your employer plan documents or coverage letter as proof.

What happens if I cannot afford the Part B premium?

Medicare has a program called Medicaid Buy-In that helps low-income people pay Part B premiums. may be able to access and rules vary by state. Contact your state Medicaid office or call 1-800-MEDICARE to learn whether you may may have access to. Some community health centers also offer financial information programs.

Does my Part B premium go up every year?

Yes. Medicare adjusts the standard premium and deductible each year based on healthcare costs. The amount of increase varies — some years it is small, other years it is larger. IRMAA surcharges also change annually based on income thresholds set by Congress.

If I have a Medigap plan, do I still pay the Part B premium?

Yes. Medigap is supplemental insurance that works alongside Original Medicare. You pay the Part B premium to Medicare, the Medigap premium to the insurance company, and the Medigap plan covers some or all of your coinsurance and deductibles. Medigap does not replace Part B.

What if my income dropped in 2024 but my IRMAA is based on 2023?

You can request an IRMAA recalculation by submitting Form SSA-44 to Social Security if you experienced a major life event such as retirement, death of a spouse, or loss of income. Include documentation such as a recent tax return, pay stubs, or a letter from your employer. If approved, your surcharge will be adjusted retroactively to January 2025.