Turning 65 marks a significant milestone in our health and wellness journey. For many of us, it’s synonymous with one word: Medicare. There’s a widespread belief—honestly, it feels more like pressure—that the moment you blow out those 65 candles, you must sign up for Medicare Parts A and B. We hear whispers of lifetime penalties and bureaucratic nightmares if we miss this magic window.
But here is the reality check: while some people definitely must start Medicare at 65, many others simply do not need to. In fact, roughly 50% of seniors today are actively choosing to delay Medicare A and B when they turn 65. And you know what? They are not making a mistake. They are simply making a strategic decision based on their current situation. Let’s cut through the confusion and look at why delaying might be your healthiest financial move.
Who Is Required to Start Medicare at 65
Before we look at how you can skip it, let’s be absolutely clear on who cannot skip it. If you fit into any of these five categories, turning 65 means you must enroll in Medicare Part A and B.
- Anyone Not Currently Working (and Not Covered by an Active Employer Plan)If you have already retired, or if your spouse has retired, and neither of you are working, you no longer have an “active” employer plan. You might be using retiree health benefits, but for Medicare purposes, that plan is not considered active employment coverage. In this case, Medicare becomes your first payer position and you must enroll at 65.
- People on COBRA InsuranceCobra is fine for a limited time—like when you are transitioning between jobs. However, the game changes once you are Medicare eligible. If you turn 65 and are only covered by COBRA, you become the primary payer for your medical bills. COBRA insurance always moves to the second payer position behind Medicare. If you don’t enroll in Medicare, you may find that COBRA covers none of your first-dollar claims. You are required to start Medicare Part A and B at 65.
- Retirees Covered by Tricare InsuranceTricare (retired military insurance) is also subject to the second payer position rule. Just like COBRA, once you become eligible for Medicare, Tricare will only pay second to Medicare’s coverage. If you don’t enroll in Medicare, you risk paying for all your medical costs out of pocket because Tricare will assume you are covered by Medicare.
- Those Covered by an Affordable Care Act (ACA) PlanTechnically, the government doesn’t kick you off an ACA plan (the health exchange or “Obamacare” plans) when you turn 65. But they may as well. At 65, all the financial incentives—like premium tax credits, cost-sharing help, and other subsidies—instantly disappear. If you stay on an ACA plan after 65, you will pay the full premium and have the full deductible with zero government support. Your financial health will thank you for switching to Medicare at 65.
- Anyone Covered by a “Small Employer” Group PlanMedicare defines a “small employer” as having 19 or fewer people on the company payroll (not just on the insurance plan). For companies this small, Medicare always takes the first payer position. If you choose to keep your small group plan without enrolling in Medicare and later have a large medical claim, your insurance company can say, “Hey, you should have taken Medicare at 65. We only pay second. Now, you pay first.” This creates a major gap in your health and financial wellness.
So, Who CAN Refuse Medicare at 65?
Now that you know who must enroll, who can delay? As I’m sure you’ve already guessed, there is only one specific group that has this privilege.
Active Employment + Large Group Plan = Option to Delay
You can comfortably refuse or delay Medicare Part A and B if you or your spouse are still working and you have a group health plan that is considered a “large employer” plan by Medicare standards. To qualify as “large group” coverage, your employer must have 20 or more employees on the company payroll. If that fits your situation, you are not required to enroll in Medicare Parts A and B at 65.
Understanding Your Three Options (If You Can Delay)
If you find yourself in that lucky large group category, you actually have some choices to make. You don’t have to do anything at all, but there may be financial or health reasons to consider a partial enrollment or complete sign-up.
Option 1: Do Nothing At All
You read that right. If you have active large employer coverage, you absolutely do not have to do anything at all with Medicare Part A or Part B when you turn 65.
Protecting Your Health Savings Account (HSA)
This is the single best reason to not enroll in Part A or Part B if you don’t have to. If you are actively contributing to an HSA (Health Savings Account)—a tax-deductible, tax-deferred growth account for medical expenses—you must stop new contributions immediately if you enroll in any part of Medicare. Part A only, Part B only, or both will all disqualify you from contributing new money to your HSA.
Addressing the Medicare Penalty Myth
You’ve probably heard the myth: if you don’t enroll in Medicare at 65, you’ll be penalized for the rest of your life. This piece of misinformation is repeated over and over—even occasionally in Social Security offices. But it is not true.
The only people who are ever penalized for delaying Medicare Part A are the roughly 1% of the population who actually have to buy Part A. For the other 99% of us, we have funded Medicare all of our working lives through FICA taxes or self-employment taxes. As long as you or your spouse have 40 quarters (roughly 10 years) of work paid into the Medicare tax system, you qualify for zero-premium Medicare Part A for the rest of your life. And if your premium is zero, what is a 1,000% penalty of zero? It’s zero.
So, if you or your spouse have 40 quarters or more and you have large active employer coverage, you will never be penalized for Part A. Delaying B is also okay if you have large active employer coverage.
Option 2: Enroll in Part A Only
This is the most common middle ground. You choose to delay Part B (because it has a monthly premium) but sign up for zero-premium Part A.
Medicare A Will Coordinate Benefits as Second Payer
Remember, we are talking about active large group coverage. If you enroll in Part A only, your employer plan will always be the first payer. Medicare Part A becomes the second payer, which means it will only cover services after your group plan has paid. But here is the critical point: Part A only covers hospitalization. It covers nothing outpatient (that’s Part B).
Why Bother Enrolling in Part A?
So why would you do this if it’s second payer only? Simple. Medicare may pay for something that your plan does not. Medicare A can pay co-insurance. Many large employer plans have co-insurance, meaning your plan might pay 80% or 90% of a hospital stay and you are responsible for the remaining 20% or 10%. By enrolling in zero-premium Part A, Medicare could coordinate benefits with your plan and potentially cover some or all of that co-insurance.
Option 3: Enroll in Medicare Part A and Part B
And last, but certainly not least, you have the option to enroll in Medicare Parts A and B as your primary coverage, effectively switching your employer group plan to a secondary role.
It May Make Sense to Delay (Yes, Even if You Can Delay)
Wait, why would I do this if I can delay? Because even if you are not required to enroll in Medicare, it might be in your best interest to compare both options.
Comparing Group Plans vs. Medicare A & B
Here are the factors you need to look at:
- Premium:What is the monthly premium that your employer is deducting for you to be on the company plan? Compare that with the current Medicare Part B premium, plus any supplementary insurance you may choose to purchase (like a Plan G or Plan N).
- Deductible:Compare your group plan deductible (which can be thousands of dollars) with the minimal Medicare Part B deductible ($240 this year for 2024).
- Co-Insurance:Does your plan have co-insurance (like 80/20)? With Medicare, once your deductible is met, supplementary plans (or Medigap plans) will pay for all or almost all of that.
- Max Out-of-Pocket:Compare your plan’s maximum out-of-pocket (like $10,000 for some group plans) with the minimal maximum out-of-pocket for most Medicare plans (which can be as low as $0 once your deductible is met).
- Prescriptions:Compare your current prescription drug coverage with the Medicare Prescription Drug Plan options available in your state.
A Word of Caution: Before Dropping Your Plan
If you have a mediocre group plan, Medicare A & B with supplement insurance might look financially attractive. But please be careful. Dropping your group plan might affect your spouse or children who are also covered under that same plan and may not have any other options. I would never recommend switching to Medicare if it means your family will lose their health insurance coverage. But if it only affects you, then switching may make financial and wellness sense.
Stay healthy, stay informed, and always plan your Medicare journey carefully!
💡 Frequently Asked Questions (FAQ)
Q1: Do I absolutely have to start Medicare Parts A and B when I turn 65?
A1: No, not everyone must start Medicare Parts A and B when they turn 65. If you are still working and have active large group coverage (20 or more employees), you can delay both A and B without penalty, especially if you want to continue contributing to your HSA. However, if you are retired, on COBRA, or covered by a small group plan, you are required to enroll at 65.
Q2: Will I be penalized if I don’t enroll in Medicare at 65?
A2: The belief that everyone is penalized for delaying Medicare Part A is a myth. For the 99% of people who have at least 40 quarters (10 years) of work paid into the Medicare tax system, Part A has a zero premium. If your premium is zero, you can never be penalized. However, you must enroll in Part B to avoid penalties unless you have large group coverage from active employment.
Q3: Why would I bother enrolling in Part A only if I can delay Part B?
A3: If you do not have an HSA, enrolling in zero-premium Part A at 65 can be beneficial. In a large group plan situation, Medicare Part A becomes the second payer for hospitalization. This means that if you have a hospital stay, Medicare Part A may coordinate benefits with your primary company plan and pay for some or all of your co-insurance (the 10-20% you are responsible for).
