February 4, 2026
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Do You Need Medicare If You’re Still Working at 65 in 2026?

If you’re turning 65 in 2026 but still working, you may be wondering whether you actually need to enroll in Medicare. This is one of the most common — and most misunderstood — Medicare questions.

The answer depends on how your employer coverage works, not simply whether you are employed. Making the wrong assumption can lead to late enrollment penalties, coverage gaps, or unexpected bills.

This guide explains the Medicare rules for people working past 65 in 2026, so you can make the right decision with confidence.

Medicare Is Not Automatic for Everyone

Medicare eligibility begins at age 65, but enrollment is not always automatic.

Some people must actively enroll, even if they are still working and have employer-sponsored health insurance. Understanding when Medicare is primary versus secondary is essential.

The Key Question: How Many Employees Does Your Employer Have?

Medicare rules change based on the size of your employer.

If Your Employer Has 20 or More Employees

In most cases:

Your employer coverage is primary
Medicare is secondary
You may be able to delay Part B without penalty
You should still consider enrolling in Part A

This applies if you are covered by your own employer or a spouse’s employer with 20 or more employees.

If Your Employer Has Fewer Than 20 Employees

In most cases:

Medicare becomes primary
Employer coverage is secondary
You must enroll in Part A and Part B at 65
Delaying Part B can result in penalties and unpaid claims

Many people are caught off guard by this rule, especially those working for small businesses.

Should You Enroll in Medicare Part A While Working?

For most people, Part A is premium-free and can be enrolled in even if you are still working.

However, you should delay Part A if:

You are contributing to a Health Savings Account (HSA)
You want to continue HSA contributions without tax issues

Part A enrollment stops HSA eligibility, even if you do not use Medicare benefits.

What About Medicare Part B?

Part B is where mistakes are most costly.

You generally should enroll in Part B at 65 if:

Your employer has fewer than 20 employees
Your employer coverage does not qualify as creditable
You are retiring or losing coverage

You may delay Part B without penalty if:

You have qualifying employer coverage
The employer has 20 or more employees
Coverage is active and not COBRA or retiree insurance

COBRA and retiree plans do not count as active employer coverage for Medicare purposes.

Prescription Drug Coverage While Working

If your employer provides prescription drug coverage:

It must be considered creditable to avoid penalties
Your employer should provide a yearly notice confirming this

If coverage is not creditable and you delay Medicare Part D, you may face a permanent penalty later.

What Happens When You Retire?

When you stop working or lose employer coverage:

You qualify for a Special Enrollment Period
You typically have 8 months to enroll in Part B
You have 63 days to enroll in Part D or Medicare Advantage

Missing these deadlines can result in penalties and gaps in coverage.

Common Mistakes People Make When Working Past 65

Assuming employer coverage always replaces Medicare
Not confirming employer size or creditable coverage
Delaying Part B incorrectly
Enrolling in COBRA instead of Medicare
Not planning ahead for retirement timing

These mistakes can follow you financially for the rest of your life.

How to Protect Yourself in 2026

If you’re working past 65:

Confirm your employer’s size
Ask whether coverage is creditable
Review how Medicare coordinates with your plan
Plan your retirement transition in advance
Get guidance before declining Medicare

Final Takeaway

Working past 65 does not automatically mean you can skip Medicare. The rules in 2026 depend on employer size, coverage type, and timing.

Understanding the Medicare rules for people working past 65 can help you avoid penalties, coverage gaps, and unnecessary stress.

Need Help Navigating Medicare While Working?

I help individuals and families understand how Medicare works with employer coverage and plan smooth transitions into retirement. My guidance is always provided at no cost.

If you’re turning 65 in 2026 and still working, reach out to Covered by Tara for personalized Medicare guidance and clarity.