Does Signing Up for Social Security Trigger Medicare Part A?

Yes. If you sign up for Social Security at or after age 65, you will be automatically enrolled in Medicare Part A. Part A can be retroactive up to 6 months, which affects HSA contributions.

Frequently Asked Questions

Can I get Social Security without Part A?
No. After age 65, Social Security and Part A are linked. The only way to avoid Part A is to not collect Social Security benefits.
How far back can Part A be retroactive?
Part A can be retroactive up to 6 months from your Social Security application date, but not before the month you turned 65.
What if I delay Social Security until 70?
If you delay Social Security to 70 and don't otherwise enroll in Medicare, you may need to sign up for Part B during your IEP at 65 if you don't have qualifying employer coverage.