The three ways to pay your Part B premium

You can pay your Medicare Part B premium through automatic deduction from your Social Security check, automatic bank withdrawal, or quarterly bill by mail. Most people use Social Security deduction because it happens without any action on your part once you set it up. If you do not receive Social Security yet, or if you want a different payment method, you can choose bank withdrawal or receive a bill four times a year.

Your premium amount depends on your income from two years ago. If your income was higher in the past, you may pay a higher premium called an Income-Related Monthly Adjustment Amount (IRMAA). This means your Part B cost could be anywhere from the standard amount to several hundred dollars per month, depending on your tax return from the prior year.

You do not have to do anything to start paying if you are already on Social Security — Medicare will deduct Part B automatically. If you need to change your payment method or have questions about your specific premium, you can contact Medicare directly or visit your local Social Security office.

Key Takeaways

  • Social Security deduction is the default payment method and requires no action once Medicare enrolls you, but you can switch to bank withdrawal or mailed bills if you prefer.
  • Your monthly premium is based on your income from two years prior, so a higher income in the past means you pay more now.
  • You can set up or change your payment method by calling Medicare at 1-800-MEDICARE, visiting Medicare.gov, or going to your local Social Security office in person.
  • If you miss a payment, you may face a late enrollment penalty added to your premium for as long as you have Part B coverage.

Automatic deduction from Social Security

If you receive a Social Security check, Medicare will deduct your Part B premium directly from that payment each month. This is the most common method because it requires no paperwork after your initial enrollment. The deduction happens automatically on the same day your Social Security payment arrives.

You will see the deduction listed on your Social Security statement. If you want to confirm the amount or check that it is correct, you can log into your Social Security account at ssa.gov or call Social Security at 1-800-772-1213. If the deduction stops for any reason, contact Medicare when ready to restart it.

Bank account withdrawal

You can have Medicare deduct your Part B premium directly from your checking or savings account each month. This method works well if you do not receive Social Security, or if you prefer not to have the deduction come from your Social Security check.

To set up bank withdrawal, you will need your routing number and account number. You can start this through Medicare.gov, by calling 1-800-MEDICARE, or by mailing a form to your local Social Security office. The deduction typically happens on the same day each month, and you will receive a confirmation when it processes.

Quarterly bills by mail

If you do not want automatic deduction, you can receive a bill four times a year and pay by check or money order. This method requires more effort on your part because you have to remember to pay each bill, but some people prefer having control over when the payment leaves their account.

Bills are usually sent about two weeks before the payment is due. If you choose this method, make sure to pay on time to avoid a late enrollment penalty. You can switch back to automatic deduction at any time if you change your mind.

Understanding your premium amount

Your Part B premium is not the same for everyone. The standard amount changes each year, but your actual cost depends on your modified adjusted gross income (MAGI) from your tax return two years before the current year. If your income was higher in the past, you pay a higher premium now through IRMAA.

For example, if it is 2024, Medicare looks at your 2022 tax return to set your 2024 premium. If your income drops significantly — such as after retirement or a major life change — you can request a reduction. You will need to file a form with Social Security and provide proof of the income change, such as a recent tax return or a letter from your employer.

You will receive a notice each year showing your premium amount for the coming year. If the amount surprises you or seems wrong, do not ignore it — contact Medicare to ask about a reduction based on a life-changing event.

What happens if you miss a payment

If your payment does not go through — whether because of a bank error, account closure, or missed bill — Medicare will send you a notice. You will have a grace period to catch up, but if you do not pay within that time, you may face a late enrollment penalty.

This penalty is added to your Part B premium permanently, for as long as you have Part B coverage. The penalty is 10 percent of the standard premium for each full month you went without coverage. This means it is important to fix payment problems quickly. If you think a penalty was applied by mistake, you can contact Medicare to request a review.

Changing your payment method

You can switch between payment methods at any time. If you are currently on Social Security deduction but want to pay by bank withdrawal instead, or if you want to move from mailed bills to automatic deduction, the process is straightforward.

Call Medicare at 1-800-MEDICARE and tell them which method you prefer. You can also visit Medicare.gov and log into your account to make the change online, or visit your local Social Security office in person. Changes usually take effect within one to two billing cycles.

Frequently Asked Questions

Can I pay my Part B premium in one lump sum instead of monthly?

No, Medicare requires monthly payments. You cannot pay for the whole year upfront. However, you can choose whether those payments are automatic or billed to you quarterly.

What if my Social Security check is not enough to cover my Part B premium?

If your Social Security payment is smaller than your Part B premium, Medicare will deduct what it can from your check and bill you for the remainder. You will receive a separate bill for the difference. Contact Medicare if you are having trouble paying the full amount.

Do I have to pay Part B if I am still working?

Yes, if you are enrolled in Part B, you must pay the premium regardless of your work status. However, if you are still employed and have health coverage through your employer, you may be able to delay Part B enrollment without penalty. Talk to your employer's benefits office about your options.

How do I know if my IRMAA is correct?

Medicare sends a notice each year showing your IRMAA calculation and the income they used. If your income has dropped significantly since that tax return — such as after retirement or job loss — you can request a reduction by filing a form with Social Security and providing proof of the change.

What if I move and my mailing address changes?

If you receive bills by mail, update your address with Social Security as soon as possible. You can do this online at ssa.gov, by phone at 1-800-772-1213, or in person at your local office. If you use automatic deduction, your payment method will not be affected by a move.