Where your Medicare bill comes from and how payment works

Medicare sends you a bill for Part B (medical insurance) and Part D (prescription drug coverage) premiums, usually once a month. Part A (hospital insurance) has no monthly premium for most people. The bill arrives by mail or email depending on how you signed up, and it shows what you owe, when it is due, and where to send payment.

You have several ways to pay: mail a check to the address on your bill, pay online through Medicare.gov, set up automatic monthly withdrawals from your bank account, or have the payment taken directly from your Social Security check. Automatic payment is the most common method because it removes the risk of forgetting a due date.

The due date is usually the first of the month for coverage that starts the first of the month. If you miss a payment, Medicare will send you a notice. You then have a grace period — typically 30 days from the due date — to pay without losing coverage, though you may face a late penalty added to your next bill.

Key Takeaways

  • Medicare bills you monthly for Part B and Part D premiums; Part A has no premium for most people.
  • You can pay by mail, online at Medicare.gov, automatic bank withdrawal, or by having the amount deducted from your Social Security payment.
  • Missing a payment triggers a grace period of about 30 days, but you will owe a late penalty if you do not pay within that window.
  • If you do not pay and do not respond to notices, Medicare will disenroll you, and you cannot re-enroll until the next open enrollment period.
  • If your income dropped or you face hardship, you may be able to reduce your premium through the Part D Low-Income Subsidy or Extra Help program.

Setting up automatic payments to avoid missed deadlines

Automatic payment is the safest way to ensure you never miss a Medicare premium due date. You can set this up through Medicare.gov by logging into your account, going to "Billing and Payments," and selecting "Set Up Automatic Payments." You will need your bank account number and routing number, or you can authorize a deduction from your Social Security check.

If you already receive Social Security, the easiest route is often to have Medicare deduct the premium directly from your monthly benefit. This happens automatically for most people enrolled in Medicare, and you can see the deduction on your Social Security statement each month. If you want to change the payment method or stop automatic deduction, you can call Medicare at 1-800-MEDICARE to make the change.

Automatic payment does not mean you stop receiving bills. Medicare will still mail or email you a statement showing what was deducted and when. Keep these statements to track your payments and catch any errors.

What happens if you miss a payment

If your payment does not arrive by the due date, Medicare sends you a notice in the mail. You then enter a grace period that lasts about 30 days from the original due date. During this time, your coverage stays active, but you owe the full amount plus a late penalty.

The late penalty is a percentage of your monthly premium and stays on your account permanently — it does not go away after you pay. For Part B, the penalty is typically 10 percent of your monthly premium for each 12-month period you were without Part B coverage. For Part D, the penalty is 1 percent of the national average premium for each month you were without coverage.

If you do not pay within the grace period, Medicare will disenroll you, meaning your coverage ends. You cannot re-enroll in Medicare until the next open enrollment period, which runs from October 15 to December 7 each year. If you miss the grace period and lose coverage, you will have a gap in insurance that could be costly if you need medical care.

How to pay online or by mail

To pay online, go to Medicare.gov and log into your account. Click "Billing and Payments," then "Pay Your Bill." You can pay with a debit card, credit card, or bank account. The site will show your current balance and let you pay the full amount or a partial payment. Online payments usually post within one to three business days.

To pay by mail, write a check or money order for the amount shown on your bill. Write your Medicare number on the check. Mail it to the address printed on your bill — this address varies by region, so always use the one on your statement, not a general Medicare address. Mail payments take longer to process, usually five to seven business days, so send them early if your due date is approaching.

If you pay online or by mail and want to confirm the payment went through, log into your Medicare account a few days later to check your balance. If the payment does not show up within a week, call 1-800-MEDICARE to verify it was received.

Reducing your premium if your income dropped

If your income fell below certain thresholds, you may be able to lower your Part D premium through the Extra Help program (also called the Low-Income Subsidy). This program is run by Social Security, not Medicare, and it covers some or all of your Part D costs depending on your income and assets.

To see if you may have access to, contact Social Security at 1-800-772-1213 or visit ssa.gov. You will need to report your current income and assets. If you may have access to, Social Security will send you a notice showing your new premium amount, and Medicare will adjust your bill starting the next month.

You can also ask Medicare about a payment plan if you cannot pay the full amount at once. Call 1-800-MEDICARE and explain your situation. Medicare cannot forgive the debt, but they may work with you on a schedule to pay over time while keeping your coverage active.

Understanding late penalties and how they affect future bills

A late penalty is permanent — once it is added to your account, it stays there for as long as you have Medicare. This means if you miss a payment in 2024, you will pay the penalty on top of your regular premium in 2025 and beyond, even after you catch up on the missed payment.

The penalty amount depends on how long you went without paying. For Part B, you pay 10 percent of your monthly premium for each 12-month period you were without coverage. If you were without Part B for six months, your penalty would be 5 percent of your monthly premium. For Part D, the penalty is 1 percent of the national average premium per month without coverage.

If you believe the penalty was added in error — for example, if you paid on time but Medicare lost the payment — you can request a review. Call 1-800-MEDICARE and ask to speak with someone about a penalty reconsideration. Have your payment records ready to show when you paid.

What to do if you cannot afford your premium

If your income is low, the Extra Help program (Part D Low-Income Subsidy) can reduce or eliminate your Part D premium. You do not pay Medicare directly for this — you contact Social Security to apply. The income limits vary by state and household size, but generally you must have income below 150 percent of the federal poverty level.

If your income is above the Extra Help threshold but you still struggle to pay, contact your State Health Insurance Assistance Program (SHIP). SHIP is a free counseling service in every state that can help you understand your options and sometimes connect you with local programs that help with premiums. Find your state's SHIP at shiptalk.org or call 1-877-839-2675.

You can also contact your state Medicaid office to see if you may have access to for Medicaid, which can cover your Medicare premiums. Medicaid rules vary widely by state, so you will need to contact your state directly. The Centers for Medicare and Medicaid Services (CMS) website has a link to each state's Medicaid office.

Frequently Asked Questions

Can I pay my Medicare bill with a credit card?

Yes, you can pay with a credit card online through Medicare.gov. However, Medicare does not charge a fee for credit card payments, so there is no reason to avoid it. If your credit card company charges you a cash advance fee or treats it as a purchase, that is between you and your card issuer, not Medicare.

What if I set up automatic payment but want to cancel it?

You can cancel automatic payments at any time by logging into your Medicare account and turning off the automatic payment setting, or by calling 1-800-MEDICARE. If you cancel, you will need to pay manually by mail or online, so make sure you have a system to remember the due date.

Do I have to pay my Medicare premium if I am still working?

Yes, you must pay your Medicare premium even if you are working and have employer health insurance. However, if your employer has 20 or more employees, you may be able to delay enrolling in Part B without a penalty. Talk to your employer's benefits department about whether you may have access to for this exception.

What happens to my Medicare if I move to another state?

Your Medicare coverage follows you to another state. Your billing address will change, so update it on Medicare.gov or call 1-800-MEDICARE. Your premium amount may change depending on your new state and the plans available there, but your coverage does not stop during the move.

Can I get a refund if I overpaid my Medicare premium?

Yes, if you overpaid, Medicare will issue a refund. It may take several weeks to process. You can check the status of a refund by logging into your Medicare account or calling 1-800-MEDICARE. If you are due a refund of more than a few dollars, it is worth following up to make sure it goes through.