COBRA does not stop the Medicare clock. Here is the math.

Thanks for bringing me in on this one, because this is exactly the kind of thing that looks simple on the surface and has a very expensive cliff hidden underneath it. Ian's piece is the first in a series he's calling Healthcare in Retirement, and he comes at it like an engineer, which I actually appreciate, because he shows his math. He's not summarizing the rule, he's walking through what it costs when you get it wrong.

And for a lot of people it feels like a gift. The company is being generous, or at least it feels that way. Same network, same coverage, you just write a check instead of having it come out of your paycheck. No disruption. So people take it.

And then a clock nobody told you about just ran out. That is the whole article in one sentence. Here's how it works. When you leave employment at 65 or older, Medicare gives you what's called a Special Enrollment Period to sign up for Part B, the outpatient coverage piece. That window is eight months. It starts the month after your employment ends, or the month after your group coverage ends, whichever comes first. Eight months. That's your window.

That's true if you know the clock is running. The problem is that COBRA runs for up to 18 months, and people assume that as long as they have COBRA, they're covered and the Medicare clock is waiting for them. It is not. Ian quotes Medicare's own language directly in the article: COBRA isn't considered group health plan coverage. Getting COBRA doesn't change when this Special Enrollment Period ends. So at month eight, your window to enroll in Part B without a penalty closes. Your COBRA still has ten more months to go. Most people find out what happened at month eighteen when the COBRA runs out.

And here's what makes it worse. When your COBRA finally does run out, that is not a qualifying event. It does not reopen the Medicare enrollment window. So now you're waiting for the General Enrollment Period, which runs January through March, with coverage starting the month after you sign up. So depending on when your COBRA ends, you could be sitting without Part B coverage for months.

The bill is entirely yours. That's what Ian says in the piece. No Part B means no Medicare outpatient coverage, and you're paying for it out of pocket. Which is terrifying if you're 67 and something goes wrong.

And I believe it, because the COBRA offer comes at the most chaotic moment in a person's working life. You're clearing out your desk, you're thinking about your last paycheck, you're worried about your next chapter. Nobody in that exit meeting is going to say, by the way, here's a separate federal enrollment window that COBRA doesn't affect. You're just handed a packet and pointed at a deadline to elect COBRA or not.

The penalty is ten percent added to your Part B premium for every full twelve months you could have had Part B and didn't. And the critical word there is forever. This isn't a one-time fine. This is a permanent surcharge for as long as you have Part B, which for most people is the rest of their lives.

Right, and he notes that it doesn't sound like much. But then you multiply it by every payment for the rest of your life. And if you missed the window by more than one year, it's twenty, or thirty, stacking up with each full twelve-month period you were late. That $20 turns into $40 turns into $60, and it never goes away.

And the thing is, it feels, in the moment, like you did the responsible thing. You didn't just drop coverage. You took COBRA. You thought you were being careful.

This part of the article genuinely surprised me. It's not subsidized. When you were working, your employer was paying a chunk of your health insurance premium, and you were paying the rest through your paycheck. When you go on it, you pay all of it, plus a two percent administrative fee. Federal rules allow the plan to charge you up to 102 percent of the full cost.

Ian cites KFF data from 2025. The average employer health plan cost $9,325 a year for a single person. At 102 percent, that works out to roughly $793 a month for one person on COBRA. That's what you're writing the check for every month when you thought you were keeping the same coverage for the same price.

More than a lot, it turns out. And then Ian puts the other column next to it, which is what Medicare actually looks like for a 65-year-old. Part B at $202.90. He uses Maricopa County as the example for a Medicare Supplement, Plan G specifically, and he found 32 companies offering it this year with prices ranging from about $131 to $526 a month for a 65-year-old. And then a drug plan on top of that, and he notes that Arizona has stand-alone drug plans starting at zero dollars a month.

His range for the whole Medicare package, Part B plus the supplement plus a drug plan, is about $335 to $730 a month. Compare that to roughly $793 for COBRA alone. For most people at 65, Medicare is less expensive, sometimes significantly less, and Ian says it also carries far less exposure if you have a bad year health-wise than the average employer plan.

Ian says it directly. For the person who is 65 or older, that offer is very often the costlier path. And that's before you even get into the penalty risk.

The spouse who isn't 65 yet. Ian mentions it at the end of his cost comparison section and says he's saving the full math for his next article because, quote, the math on that one surprised him even more. So if your spouse is younger, say 63, that's a different situation and we don't want to get ahead of where the article goes. That one he's exploring separately.

Ian addresses this head on. You cannot just layer them the way you might imagine. If you elect COBRA and then sign up for Medicare, the plan is allowed to end your COBRA coverage. Medicare's own guidance says COBRA will probably end once you sign up. So you don't get to have both running the way you're picturing.

Then technically you can hold both, but it doesn't work out the way you'd hope either. The later coverage pays second, which means it's only ever covering what the first leaves behind. And a supplement plan would do that same job for a fraction of the cost. So you're paying full freight for something that's mostly redundant.

This part of the article is so real. He describes one of their advisors spending months untangling a client's claims that kept getting denied because the system still listed an old employer plan as the other payer. Nobody was doing anything dishonest. It was just two insurers, one bill, and a coordination of benefits problem that fell on the patient to sort out. The bill lost, as Ian puts it.

And they're probably 66 or 67, they may be dealing with whatever health situation generated the bill in the first place, and now they have a second job that's just making phone calls to insurance companies. That's a real cost that doesn't show up in any premium comparison.

Ian breaks it down clearly. The first thing is timing. A Certified Medicare Planner asks about COBRA before you sign the election, not after. That's the whole ballgame right there. Because once you've signed and time has passed, you're in a much harder position. They ask before.

Right, sign nothing first. And then what they do is put both clocks on one page. The COBRA months and the eight-month Part B window, side by side, so you can actually see where they cross. Because when you see that visual, it's obvious. Month eight closes the Medicare window. Month eighteen closes COBRA. There's a ten-month gap that's fully exposed.

Nobody shows you that. That's the problem. And then they price both columns with your actual numbers, not the averages Ian used in the article. Your specific situation, your county, your age, what plans are available to you. Ian used Maricopa County because that's the data he had. Your numbers might look different.

This is one of the trickier pieces. COBRA doesn't count for Part B purposes, which is why the penalty clock runs even while you have it. But its drug coverage, the prescription drug part, often does count for Part D, the Medicare drug benefit. So one clock is running and the other is not. It's not that everything about COBRA is broken, it's that the rule applies differently depending on which part of Medicare you're talking about. And keeping those two straight is genuinely the kind of thing where I'd say, if you're not sure exactly how your specific COBRA plan's drug coverage interacts with Part D, that is a question to bring to one of our advisors before you make any decisions, because the exact rules there matter a lot.

Right. A Certified Medicare Planner helps you file the form that documents your prior work coverage so that when you do enroll in Part B, your start date is clean and the penalty question never even comes up. That's the thing, the penalty isn't inevitable even if you're past 65, if you had legitimate job coverage, there's a process to document it properly. But that process has to be done right. Ian describes it as an hour of work. The penalty is a lifetime.

And that's exactly what Ian is trying to show with his whole approach to this article. He's an engineer. He's laying out the numbers the way he had to in order to understand them himself. And the numbers make the case better than any argument would.

That's exactly where it matters. Not after you've had COBRA for fourteen months and you're starting to wonder. That's where the conversation needs to happen. And the advisors at American Retirement Advisors do this every day. They're not going to have to think hard about your situation. They've seen it.

Two sessions on Friday, October 2nd. One at Foothills Library in Glendale at 10:30 in the morning, and one at Mustang Library in Scottsdale at 2:30 in the afternoon. No cost to attend. You can register at 123easymedicare.com/medicare-workshop, or you can call 877-220-1089.

And if October 2nd doesn't work, the phone number still does. 602-281-3898. You don't have to wait for an event to ask a question.

Figure out where you are on the clock today. Not next week. Today. When did your employment end? Count eight months from that date. If you're inside that window, you still have options and you need to move. If you're past that window, you need to talk to someone who can tell you what documentation you have and what the enrollment options look like from where you stand. Either way, the answer is the same. Make the call before another week goes by.

The penalty clock runs from a specific date, and knowing exactly what you owe, and why, and whether there's any documentation that could change the picture, that's information worth having even if the news isn't all good. You can't make smart decisions from a place of not knowing.

That's what the best financial education does. It shows you the cliff so you can go around it, not after you've already gone over.