Should I enroll in Medicare at 65 if I am still working?
It depends on the coverage you have rather than on the birthday. Where you or your spouse are still working and have group health coverage through that job, Medicare describes a route that can allow Part B to be taken later without a late enrollment penalty.
That route is narrower than it sounds. It rests on coverage based on current active employment — not on retiree coverage, not on continuation coverage, and not automatically on coverage connected to self-employment. Medicare also directs people to ask the employer whether Part A and Part B are needed at 65, because some job-based coverage does not pay as expected without them.
Two consequences travel with the decision: how prescription drug coverage is treated, and what happens to health savings account contributions. Neither is visible in the enrollment question itself, which is why the decision is usually made in the wrong order.
The kind of coverage matters more than the birthday
Turning 65 does not by itself decide anything here. What decides it is whether there is coverage based on current active employment, whose employment it is based on, and what the employer's plan expects.
Coverage that feels equivalent often is not. Continuation coverage and retiree coverage are not coverage based on current employment, and a reader who treats them as equivalent can lose a penalty-free route without noticing.
Enrolment, not age, ends HSA contributions
Health savings account eligibility ends with the first month of Medicare coverage. Age 65 alone does not end it, and taking Part A alone does end it.
Because coverage can begin before the application, the date that matters is the coverage start date rather than the date the paperwork was filed.
What a general answer cannot settle
Enrolment requirements, payer order, the band that applies to a household, whether a request to revisit a determination will succeed, and the amount that may still be contributed to a health savings account are all individual determinations made by Social Security, Medicare, the plan or a tax professional on the facts and documents.
This page is written to help someone ask better questions of those parties and to see the connections between decisions. It does not make any of those determinations, and no figure here is calculated for a reader.
Reviewed by Bay Area Wealth Advisors. Last reviewed 2026-09-20. Educational information only — not individualized financial, tax or legal advice.