Where Your Medicare Part B Payment Goes

Your Medicare Part B premium covers doctor visits, outpatient care, and medical equipment — not hospital stays, which Part A handles. The amount you pay each month depends on your income from two years ago, not what you earn right now. Most people pay the standard premium, but if your income was high in that earlier year, you will pay more through an adjustment called Income-Related Monthly Adjustment Amount (IRMAA).

Medicare sends you a bill each month, and you have several ways to pay it. The method you choose affects when the money leaves your account and whether you have to remember to send it in. Understanding your options now prevents missed payments, which can cause your coverage to lapse.

Key Takeaways

  • Your Part B premium is deducted from your Social Security check automatically unless you choose a different payment method.
  • If you do not receive Social Security, you must pay Medicare directly by mail, phone, or online bank transfer.
  • Your premium amount is based on your income from two years prior, and you will receive a notice each year showing what you owe.
  • If you miss a payment, your coverage continues for a grace period, but unpaid bills can affect your future enrollment.
  • You can change your payment method at any time by contacting Medicare or your Social Security office.

Automatic Deduction From Your Social Security Check

If you receive Social Security benefits, your Part B premium is normally taken out of your monthly check before you see it. This is the default method, and it requires no action on your part. The deduction happens on the same day your Social Security payment arrives, usually the third, fourth, or fifth of the month depending on your birth date.

This method is reliable because you cannot forget to pay — the money is removed automatically. However, if your Social Security benefit is smaller than your Part B premium, you will need to pay the difference yourself. Medicare will send you a separate bill for the amount not covered by your Social Security check.

If you want to stop using this method or switch to a different one, you can request the change by calling Social Security at 1-800-772-1213 or by visiting your local Social Security office in person.

Direct Payment If You Do Not Receive Social Security

If you do not receive Social Security — or if you receive it but want to pay Medicare directly — you have three payment routes: mail, phone, or online.

By mail: Medicare sends you a bill each month. Write your Medicare number on the check or money order, place it in the envelope provided, and mail it to the address on your bill. Allow at least one week for the payment to arrive and be processed.

By phone: Call Medicare at 1-800-MEDICARE (1-800-633-4227) and speak with a representative who will take your payment information over the phone. Have your Medicare card and a debit or credit card ready. This method works when ready, and you will receive a confirmation number.

Online: Visit pay.cms.gov and enter your Medicare number and date of birth. You can pay with a bank account (no fee) or a debit or credit card (small fee applies). The payment is processed right away, and you receive a receipt you can save or print.

Understanding Your Premium Amount and Annual Changes

Your Part B premium changes each year and is based on your Modified Adjusted Gross Income (MAGI) from two years before. If you earned more in 2022, your 2024 premium will be higher. Medicare calculates this automatically and sends you a notice called an Initial Enrollment Notice (IEN) or Annual Notice of Change (ANOC) in the fall, showing your new premium for the following year.

The standard premium amount changes annually — it was $164.90 per month in 2023 and $174.70 in 2024, but these figures change each year. If your income was above certain thresholds, you pay the standard amount plus IRMAA, which can range from about $70 to over $560 extra per month depending on how much your income exceeded the limit.

If your income dropped significantly — because you retired, lost a job, or had a major life change — you can request a Life-Changing Event (LCE) reduction. You will need to submit proof of the change, such as a tax return or letter from your employer. Contact Medicare to request this review.

What Happens If You Miss a Payment

If you do not pay your Part B premium by the due date, Medicare gives you a grace period of up to three months to catch up without losing your coverage. During this time, your Part B coverage stays active, but you owe the unpaid amount plus any future premiums.

If you do not pay within the grace period, your Part B coverage ends. To restart it, you must wait until the next General Enrollment Period (January 1 to March 31) and pay a late enrollment penalty. This penalty is 10 percent of the standard premium for each full year you were not enrolled, and you pay it for as long as you have Part B. For example, if you were not enrolled for two years, you pay an extra 20 percent on top of your regular premium.

To avoid this situation, contact Medicare when ready if you know you cannot pay on time. You may be able to set up a payment plan or discuss other options.

Changing Your Payment Method

You can switch payment methods at any time — from automatic deduction to direct payment, or from one direct payment method to another. There is no penalty for changing, and the change takes effect within one to two billing cycles.

To change your method, call Medicare at 1-800-MEDICARE or visit your local Social Security office if you want to stop the automatic deduction from your Social Security check. If you are switching between mail, phone, and online payment, you can often make the change directly through the payment method itself — for example, by updating your account on pay.cms.gov.

Keep a record of when you made the change and which method you are now using. If you switch away from automatic deduction, set a reminder on your phone or calendar so you do not forget to pay each month.

Income-Related Monthly Adjustment Amount (IRMAA) and How It Affects Your Bill

If your income in the look-back year was above $97,000 (single) or $194,000 (married filing jointly), you will pay more than the standard Part B premium. This extra amount is your IRMAA, and it is based on income brackets set by Medicare each year.

Your notice will show your income as Medicare calculated it and the total amount you owe each month. If you believe the income figure is wrong — because you reported it incorrectly on your tax return, or because your actual income is now much lower — you can request a correction. You will need to provide documentation, such as a recent tax return or a letter from your employer.

IRMAA also affects your Part D (prescription drug) and Part C (Medicare Advantage) premiums if you have them. When you change your payment method or address, make sure Medicare has your current information so your bills go to the right place.

Frequently Asked Questions

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

No, Medicare Part B premiums are billed and paid monthly only. You cannot pay for the entire year upfront or switch to quarterly payments. If you want to may support you do not miss a payment, automatic deduction from your Social Security check is the most reliable option.

What if my Social Security benefit is less than my Part B premium?

Medicare will deduct what it can from your Social Security check and send you a separate bill for the remaining balance. You will need to pay that bill by mail, phone, or online. This situation is common for people with lower Social Security benefits and higher IRMAA amounts.

Do I have to pay Part B if I am still working and have employer health insurance?

Yes, you must pay your Part B premium even if you have employer coverage. However, you may be able to delay enrolling in Part B without penalty if your employer plan is considered creditable coverage. Speak with your employer's benefits office and contact Medicare to understand your specific situation.

Can I get a refund if I overpaid my Part B premium?

Yes, Medicare will refund overpayments. If you notice you paid too much, contact Medicare with proof of the overpayment. Refunds are typically issued within 30 days, either by check or by credit to your future premiums.

What if I move to a different state — does my payment method change?

Your payment method does not change automatically when you move. However, you should notify Medicare of your new address so your bills arrive at the correct location. If you were using automatic deduction from Social Security, it continues. If you were paying by mail, update your address with Medicare to may support bills reach you.