How Many Work Quarters Do You Need for Medicare?

You need 40 work quarters, roughly 10 years of covered employment, to qualify for premium-free Medicare Part A. Each quarter is a Social Security credit earned through wages or self-employment income, and you can earn up to four per year. If you have fewer than 40, you can still enroll in Part A, but you’ll pay a monthly premium that depends on how many quarters you’ve banked.

How a Quarter Is Earned

The Social Security Administration awards one credit for each block of covered earnings during the year, capped at four credits annually. For 2026, one credit costs $1,890 in wages or self-employment income, so earning $7,560 in a single year gets you all four credits for that year.1Social Security Administration. Quarter of Coverage The earnings don’t have to be spread across the calendar. If you earn $7,560 in January and nothing after that, you still get four credits.

The dollar amount per credit adjusts each year with average wages. It was $1,810 in 2025 and rose to $1,890 for 2026. Credits you earned in earlier years count at the threshold that applied then, so nothing you’ve already earned can be lost.

Checking How Many You Have

You can see your credit total by creating or logging into a “my Social Security” account at ssa.gov. Your Social Security Statement lists your full earnings history and the credits tied to it. Reviewing it well before 65 gives you time to correct errors or pick up more work if you’re close to 40.

What You Pay With Fewer Than 40 Quarters

If you haven’t hit 40, you can still enroll in Part A by paying a monthly premium. The amount depends on how close you are:

At the full premium, Part A alone runs $6,780 a year. If you’re within a few quarters of the 30 or 40 line, a short stretch of additional work can save real money. Someone at 28 quarters who works long enough to reach 30 cuts the monthly Part A bill from $565 to $311. Someone at 38 who reaches 40 stops paying a Part A premium entirely.

Keep in mind that Part A eligibility through work quarters is separate from Part B, which covers doctor visits, outpatient care, preventive services, and medical equipment. Part B carries its own monthly premium no matter how many quarters you’ve worked.3Medicare.gov. Parts of Medicare

Qualifying on a Spouse’s Work Record

You don’t necessarily need 40 quarters of your own. You may qualify for premium-free Part A through a current or former spouse’s work record, as long as that spouse has enough credits. The rules depend on your marital status:

The divorced-spouse path is easy to miss. If your marriage lasted a decade and your ex-spouse had a solid work history, you could qualify for premium-free Part A even with few or no credits of your own.

Paths That Don’t Require 40 Quarters

Work credits aren’t the only route to Medicare. Certain medical conditions and disability status open the door regardless of age or work history.

Social Security Disability

If you receive Social Security Disability Insurance, you become eligible for Medicare after 24 months of receiving those payments.5Centers for Medicare & Medicaid Services. Original Medicare (Part A and B) Eligibility and Enrollment The clock starts with your first SSDI check, not the date your disability began. Because SSDI has its own five-month waiting period before benefits begin, the total gap between becoming disabled and having Medicare can stretch to 29 months. After the 24-month SSDI period, enrollment in Part A and Part B is automatic.

ALS

People diagnosed with ALS are the major exception to the disability waiting period. Medicare coverage begins the same month SSDI benefits start, with no 24-month wait. Since July 2020, the five-month SSDI waiting period has also been waived for ALS, so coverage can begin almost immediately after approval.6Social Security. DI 11036.001 Amyotrophic Lateral Sclerosis – 5-Month and 24-Month Waiting Periods Waived – Field Office

End-Stage Renal Disease

If you need regular dialysis or a kidney transplant for permanent kidney failure, you can get Medicare at any age. Coverage usually starts on the first day of the fourth month of dialysis.7Medicare.gov. End-Stage Renal Disease (ESRD) That four-month wait can be shortened if you start a home dialysis training program at a Medicare-certified facility within the first three months of treatment, in which case coverage can begin as early as the first month. If you’re getting a transplant without prior dialysis, coverage can start as early as the month you’re admitted for the transplant or for pre-surgical services.8Centers for Medicare & Medicaid Services. End-Stage Renal Disease (ESRD)

Help Paying If You Don’t Have Enough Quarters

If your income and savings are limited, federal Medicare Savings Programs can cover some or all of your Medicare costs. These are run by state Medicaid offices, so you apply through your state rather than through Medicare.9Medicare.gov. Medicare Savings Programs

  • Qualified Medicare Beneficiary (QMB): Covers Part A premiums (for people without premium-free Part A), Part B premiums, deductibles, and copayments. For 2026, the monthly income limit is $1,350 for individuals and $1,824 for married couples, with a resource limit of $9,950 for individuals.9Medicare.gov. Medicare Savings Programs
  • Specified Low-Income Medicare Beneficiary (SLMB): Covers Part B premiums. Individual income limit of $1,616 per month in 2026.
  • Qualifying Individual (QI): Covers Part B premiums. Individual income limit of $1,816 per month in 2026.
  • Qualified Disabled and Working Individual (QDWI): Covers Part A premiums for certain working people with disabilities.

QMB is particularly relevant if you’re facing the full $565 Part A premium because you’re short on quarters. Some states set income limits higher than the federal floors, so it’s worth applying even if you’re slightly over these numbers.