Social Security and Medicare are separate programs with different age requirements, but how you time your Social Security benefits directly impacts how you enter the Medicare system. For 2026, the standard Part B premium of $202.90 remains a central figure in this coordination.

Automatic vs. Active Enrollment

Your Social Security status at age 65 determines whether the government signs you up automatically or if you must take action yourself.

  • The Automatic Path: If you are already receiving Social Security benefits at least four months before you turn 65, you will be automatically enrolled in Medicare Parts A and B. Your Medicare card will arrive in the mail about three months before your 65th birthday, and coverage starts the first day of your birth month.
  • The Active Path: If you are delaying Social Security (for example, waiting until age 67 or 70 to maximize your check), you must actively apply for Medicare. You should do this during your 7-month Initial Enrollment Period (IEP) to avoid lifetime late-enrollment penalties.
  • The “First of the Month” Rule: If your birthday is on the first day of the month, Medicare treats you as if you turned 65 in the previous month. Your coverage and enrollment windows will all shift one month earlier.

Paying Your Premiums

The timing of your Social Security benefits also dictates how you pay for your coverage.

  • Benefit Deduction: If you receive Social Security, your Part B premium (and any Part D IRMAA surcharges) is automatically deducted from your monthly check. In 2026, the 2.8% Social Security COLA will be partially offset by the $17.90 increase in the Part B premium for most people.
  • Direct Billing: If you are not yet taking Social Security, Medicare will send you a bill every three months (called a “CMS-500”). You can pay this quarterly bill online through your Medicare account, via “Medicare Easy Pay” (automatic bank deduction), or by mail.
  • HSA Conflict: If you are still working and delaying Social Security to continue contributing to an HSA, do not sign up for any part of Medicare (including Part A), as it will disqualify you from making further HSA contributions.

Key 2026 Coordination Table

Social Security StatusMedicare EnrollmentHow Premium is Paid
Claimed at 62–64Automatic at age 65Deducted from SS check
Claiming exactly at 65Automatic/ConcurrentDeducted from SS check
Delaying until 67–70Must Apply ManuallyQuarterly direct bill
Still Working (20+ employees)Can delay Part B/DN/A (if delayed)

Source: Social Security Administration (SSA) Publication No. 05-10043; and Medicare.gov, “Getting Medicare before you get Social Security.”