Medicare premiums are deducted from your Social Security payment starting in January, the month after you turn 65 and enroll in Medicare Part B

If you sign up for Medicare Part B (medical insurance) when you first become may be able to access at 65, your premium comes out of your Social Security check beginning in January of the following year. The deduction happens automatically — you do not have to arrange it or pay a separate bill. The Social Security Administration and Medicare coordinate this directly.

The timing depends on when you enroll. If you turn 65 in March and enroll in Medicare Part B that same month, your first premium deduction appears in your January Social Security payment the next calendar year — about 10 months later. If you delay enrolling past your initial may be able to access window, your deductions start the January after the month you actually enroll.

Part B premiums also cover Medicare Part D (prescription drug coverage) if you choose that plan. Part D premiums are deducted the same way, in the same January start month, though the amount varies by plan and carrier.

Key Takeaways

  • Medicare Part B premiums begin deducting from your Social Security payment in January of the year after you turn 65 and enroll.
  • The deduction is automatic — Social Security and Medicare handle the coordination without you having to pay separately.
  • If you enroll late (after your initial may be able to access window), deductions start the following January after your actual enrollment month.
  • Part D prescription drug premiums deduct from Social Security on the same January schedule as Part B.
  • Your monthly Social Security payment will show the deduction as a separate line item on your statement.

How the January deduction works in practice

When January arrives, your Social Security payment is reduced by the amount of your Part B premium. For 2024, the standard Part B premium is $164.90 per month, though higher earners pay more through an income-related adjustment. If you also have Part D coverage, that premium amount is subtracted as well — the total comes out all at once from your Social Security deposit.

You will see the deduction listed on your Social Security statement. The statement shows your gross payment amount, then lists "Medicare Part B Premium" and any other deductions, then shows your net payment — the amount that actually reaches your bank account. This happens every month going forward, not just in January.

If you do not yet receive Social Security when you turn 65, Medicare sends you a separate bill for Part B premiums. Once you start collecting Social Security later, the deduction switches to automatic and the separate bills stop.

What happens if you delay Social Security but enroll in Medicare

Some people turn 65, enroll in Medicare, but delay claiming Social Security to get a larger monthly benefit later. In this situation, Medicare still deducts Part B premiums — but from a different source. You receive a bill directly from Medicare (usually by mail) each month, rather than having it pulled from Social Security.

Once you do start collecting Social Security, even years later, Medicare automatically switches your premiums to deduct from your Social Security payment. You do not have to contact anyone to make this change happen.

Income-related premiums and how they affect your deduction

If your income is above a certain threshold, you pay a higher Part B premium through an Income-Related Monthly Adjustment Amount (IRMAA). Medicare bases this on your tax return from two years prior. For example, in 2024, Medicare uses your 2022 tax information to set your 2024 premium.

Higher premiums still deduct from your Social Security payment on the same January schedule. The amount is straightforward larger than the standard premium. If your income drops significantly — through retirement, a spouse's death, or other life changes — you can contact Social Security to request a recalculation, and your premium may decrease mid-year.

Part A premiums and when they deduct (if at all)

Medicare Part A (hospital insurance) is usually free if you or your spouse paid Medicare taxes for at least 10 years while working. Most people do not pay a Part A premium, so nothing deducts for it.

If you do owe a Part A premium because you do not have enough work history, that premium also deducts from your Social Security payment starting in January, alongside Part B. The amount varies based on your coverage level and work history.

What to do if the deduction seems wrong

Check your Social Security statement each January to confirm the deduction matches what you expect. If the amount looks incorrect — too high, too low, or missing entirely — contact Social Security at 1-800-772-1213. Have your Medicare card and recent Social Security statement handy.

Common reasons for unexpected amounts include a recent life event (marriage, divorce, death of a spouse) that affects your income calculation, or an error in Medicare's records about your enrollment date. Social Security can investigate and correct the deduction if needed.

Frequently Asked Questions

Can I choose to pay my Medicare premium separately instead of having it deducted from Social Security?

No. Once you enroll in Medicare Part B and receive Social Security, the deduction is automatic and mandatory. If you do not yet receive Social Security, Medicare bills you directly by mail each month until you start claiming benefits.

What if my Social Security payment is smaller than my Medicare premium?

This situation is rare but possible. Social Security will deduct the full premium amount, which may result in a very small or zero payment to you that month. Contact Social Security to discuss your options, which may include adjusting your Part B or Part D coverage.

Does Medicare Part D prescription drug premium deduct in a different month than Part B?

No. Both Part B and Part D premiums deduct from your Social Security payment starting in the same January. The deductions appear together on your statement, though they may be listed separately.

If I turn 65 in December, when do deductions start?

If you enroll in Medicare Part B in December when you turn 65, your first premium deduction appears in your January Social Security payment the following year. Your coverage begins the month you turn 65, but the payment deduction waits until the next calendar year.

Can I see my Medicare premium amount before January?

Yes. Medicare sends you a notice in December showing your Part B premium for the coming year. You can also log into your Medicare account at Medicare.gov or call 1-800-MEDICARE to see your premium amount before the January deduction occurs.