Social Security & Medicare: How They Work Together

Automatic Medicare Enrollment

If you're already receiving Social Security benefits when you turn 65, you'll automatically be enrolled in Medicare Parts A and B. Your Medicare card will arrive in the mail about three months before your 65th birthday.

If you don't want Part B (perhaps because you have employer coverage), you'll need to opt out by returning the card with instructions. You can delay Part B without penalty if you have creditable employer coverage.

When to File for Social Security

You can file for Social Security as early as age 62, but your monthly benefit will be permanently reduced. Waiting until Full Retirement Age (66-67 depending on birth year) gives you 100% of your benefit. Delaying until age 70 increases your benefit by 8% per year.

Filing for Social Security before 65 doesn't automatically enroll you in Medicare. You'll need to sign up for Medicare separately during your Initial Enrollment Period around age 65.

Medicare Part B Premium Deduction

Your Medicare Part B premium is automatically deducted from your Social Security check each month. If your Social Security benefit is less than the Part B premium, you'll receive a bill directly from Medicare.

IRMAA surcharges (if applicable) are also deducted from Social Security. Higher earners pay more for Parts B and D based on income from two years prior.

Coordinating Benefits

Working Past 65: If you have employer health coverage from a company with 20+ employees, you can delay Medicare Part B without penalty. File for Social Security whenever it makes financial sense without worrying about Medicare timing.

Retiring Before 65: If you retire before 65 and file for Social Security, you'll still need to wait until age 65 to enroll in Medicare. Plan for bridge coverage through COBRA, ACA marketplace plans, or spouse's employer coverage.