Medicare costs for SSDI recipients depend on which parts you use and your income level

When you receive Social Security Disability Insurance (SSDI), you become covered by Medicare automatically after 24 months of receiving benefits. Medicare has four parts — A, B, C, and D — and each has different costs. Part A (hospital insurance) is free for most SSDI recipients. Part B (medical insurance) costs money each month, and the amount you pay depends on your income from the previous year. Part C and Part D have their own costs as well.

The dollar amounts change every year, and they also depend on your income level. If your income is higher, you pay a larger share of the cost through something called Income-Related Monthly Adjustment Amounts (IRMAA). This guide explains what each part costs, how income affects your payments, and what to expect when your Medicare coverage begins.

Key Takeaways

  • Medicare Part A is free for SSDI recipients; Part B requires a monthly premium that increases with your income level.
  • Your Part B premium is based on your income from two years prior, so changes in your earnings may not affect your payment when ready.
  • Part D (prescription drug coverage) and Part C (Medicare Advantage) have separate monthly costs that vary by plan and location.
  • If your income rises above certain thresholds, you pay an additional amount called IRMAA on top of your regular Part B premium.
  • You can appeal an IRMAA calculation if your income dropped due to a life event like job loss or divorce.

Medicare Part A: Hospital coverage at no cost

Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. For SSDI recipients, Part A is free — you pay no monthly premium. You do pay a deductible when you enter the hospital, which means you cover the first portion of the bill yourself before Medicare begins to pay. This deductible amount changes yearly.

After you meet the deductible, Medicare covers most of your hospital costs for the first 60 days of a hospital stay. If you stay longer, your out-of-pocket costs increase. Part A also has limits on how many days it covers in a skilled nursing facility or for home health services, so you should review your coverage before you need it.

Medicare Part B: Monthly premium based on your income

Part B covers doctor visits, outpatient care, medical equipment, and preventive services. Unlike Part A, Part B requires a monthly premium. The standard premium amount changes each year. Your actual premium depends on your income from two years before the current year — so if your income changes in 2024, it affects your 2026 premium, not your 2024 payment.

If your income is below a certain threshold, you pay the standard premium. If your income exceeds that threshold, you pay the standard premium plus an additional amount called IRMAA. The higher your income, the more you pay. For example, a single person with income above a certain level pays more than someone with lower income. These income thresholds and premium amounts are set by Social Security and Medicare each year.

Your Part B premium is usually deducted directly from your SSDI payment, so you do not receive a separate bill. If you do not want Part B coverage, you can decline it when you first become covered by Medicare, but you may face a penalty if you enroll later.

Income-Related Monthly Adjustment Amounts (IRMAA) explained

IRMAA is an extra charge added to your Part B premium if your income exceeds a certain level. Social Security calculates IRMAA based on your Modified Adjusted Gross Income (MAGI) from your tax return from two years prior. If you are married and file taxes jointly, both spouses' income counts toward the threshold.

IRMAA has multiple income brackets, and you move into a higher bracket as your income increases. Each bracket has a corresponding additional monthly charge. For instance, someone with income in the lowest bracket above the threshold pays one amount, while someone in a higher bracket pays more. These brackets and amounts change yearly.

If your income dropped due to a life event — such as job loss, divorce, or death of a spouse — you can request that Social Security recalculate your IRMAA using your current year income instead of the prior-year income. You must submit a form and documentation of the life event within 60 days of the event.

Medicare Part C and Part D costs

Part C, also called Medicare Advantage, is an alternative to Original Medicare (Parts A and B). It is offered by private insurance companies and usually includes prescription drug coverage. Part C plans have their own monthly premiums, which vary by plan and location. Some plans have no premium, but you still pay the Part B premium to Medicare. Part C plans also have deductibles, copayments, and out-of-pocket limits that differ from Original Medicare.

Part D is prescription drug coverage. If you choose Original Medicare (Parts A and B), you must enroll in a Part D plan separately through a private insurance company. Part D plans have monthly premiums that vary widely depending on which plan you choose and which drugs it covers. You also pay a deductible before the plan begins to pay for most drugs, and you pay copayments or coinsurance for each prescription.

If you do not enroll in Part D when you first become covered by Medicare, you may face a penalty if you enroll later. The penalty is a percentage of the national average Part D premium, added to your premium for as long as you have coverage.

When your Medicare coverage begins and how to prepare

Your Medicare coverage begins automatically on the first day of the 25th month after your SSDI benefits start. You do not need to do anything to enroll in Part A and Part B — Social Security handles this automatically. You will receive a Medicare card in the mail about two weeks before your coverage begins.

Before your coverage starts, you should review your options for Part C and Part D. If you want a Medicare Advantage plan (Part C) instead of Original Medicare, you must enroll during your initial enrollment period, which is the three months before, the month of, and the three months after your Part B coverage begins. If you miss this window, you may have to wait until the next annual enrollment period (October 15 to December 7) to change plans.

For Part D, you also have an initial enrollment period of the same length. If you do not enroll in Part D during this time and you do not have other creditable drug coverage, you will owe a late enrollment penalty when you do enroll. It is worth comparing Part D plans in your area before your coverage begins, because premiums and drug coverage vary significantly between plans.

How to find your current Medicare costs

Your Part B premium and IRMAA amount appear on your Social Security benefit statement, which you can view online through your my Social Security account at ssa.gov. Log in and select "Benefit Verification Letter" to see your current payment amount and any IRMAA charges.

You can also call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) to ask about your specific Part B premium and IRMAA amount. Have your Social Security number ready. If you disagree with your IRMAA calculation, you can request a reconsideration or appeal through Social Security.

For Part C and Part D costs, visit Medicare.gov and use the plan finder tool. Enter your location and the drugs you take, and the tool will show you available plans and their premiums, deductibles, and out-of-pocket costs for your specific situation.

Frequently Asked Questions

Do I have to pay for Medicare Part A?

No. Part A is free for SSDI recipients. You pay a deductible only when you use hospital services, not a monthly premium.

What happens if my income increases after I start receiving SSDI?

Your Part B premium and IRMAA are based on your income from two years prior. If your income increases in 2024, your premium will not change until 2026. If your income drops due to a life event, you can request a recalculation within 60 days.

Can I choose not to enroll in Part B?

Yes, you can decline Part B when you first become covered by Medicare. However, if you enroll later, you will owe a late enrollment penalty for as long as you have Medicare coverage. The penalty is a percentage of the standard Part B premium.

What is the difference between Part C and Original Medicare?

Original Medicare is Parts A and B, run by the federal government. Part C (Medicare Advantage) is a private insurance alternative that includes hospital and medical coverage, usually with prescription drugs included. Part C plans have different costs and coverage rules than Original Medicare.

Do I have to enroll in Part D for prescription drugs?

If you choose Original Medicare, you must enroll in a Part D plan separately. If you choose Part C (Medicare Advantage), prescription drug coverage is usually included. If you do not enroll in Part D when first covered by Medicare and you do not have other drug coverage, you will owe a late enrollment penalty.