Resource Aid Center

7 min read · Last updated September 2, 2026

In this article

• The moment it happened
• What the next 24 hours require
• The two clocks that run at the same time
• The mistake that closes the window without you noticing
• The 30, 60, and 90 day sequence
• Frequently asked questions

Two weeks after Deja’s job ended, the COBRA packet arrived quoting $793 a month for the exact plan she’d had at work, and she almost signed it without ever checking what the ACA Marketplace would charge for the same coverage.

The moment it happened

Losing job-based health coverage opens two separate enrollment paths at once, not one path with a fallback. COBRA lets you keep the exact plan you already had, at up to 102% of its full cost, since your employer stops covering any of it. The ACA Marketplace opens a Special Enrollment Period the same day, letting you shop a different plan, one that might come with a subsidy based on your new, lower income. Both clocks run for 60 days starting from the same trigger, in parallel, not in sequence.

What the next 24 hours require

Don’t sign the COBRA election form yet, and don’t ignore it either. Go to HealthCare.gov (or your state’s own marketplace exchange) and price a Marketplace silver plan using your actual expected income for the rest of the year, not last year’s paycheck. Keep the COBRA packet, since it names your plan’s exact monthly premium, the number you need for the comparison. Write down the date your job-based coverage actually ended. That date, not the date the COBRA packet arrived, is what starts both 60-day clocks.

The two clocks that run at the same time

COBRA’s election period runs at least 60 days from the later of the date coverage actually ends or the date your former employer’s plan sends the official election notice, under 29 U.S.C. Section 1165(a)(1). The ACA Marketplace’s Special Enrollment Period runs 60 days from the date job-based coverage is lost, under 45 CFR Section 155.420(c)(1), regardless of whether you’ve said yes to COBRA or not.

Here’s the part that surprises most people: choosing COBRA doesn’t automatically shut the Marketplace door. According to CMS’s own training material for agents and brokers, someone who has already elected COBRA “may still use their loss of coverage SEP to enroll in Marketplace coverage until the end of their SEP window,” which is 60 days after the original job loss, as long as they end their COBRA coverage in time for the new Marketplace plan to start. What actually closes the door is letting that original 60-day window pass, because voluntarily dropping COBRA after the window closes does not open a new Marketplace enrollment period. At that point, the only paths back to the Marketplace are COBRA running out entirely, losing an employer subsidy on it, or the next Open Enrollment.

Where you are	What’s still true
Inside the 60-day window, haven’t elected COBRA yet	Both the COBRA clock and the Marketplace clock are open. Your own COBRA quote and your own subsidy number are both knowable right now.
You elected COBRA but haven’t ended it, still inside the 60-day window	You can still switch to a Marketplace plan, as long as you end COBRA in time for the new plan to start.
The 60-day window has closed	Both doors shut. The only paths back are COBRA running out, losing an employer subsidy on it, or the next Open Enrollment.

Here’s why the clock matters in real dollars, not just in principle. A former employer plan costs $777 a month on average nationally, so COBRA at 102% comes to about $793. For a single person earning around $30,000 a year after a layoff, about 192% of the federal poverty level, the 2026 subsidy formula caps their expected contribution at roughly 6.2% of income, about $155 a month, toward a benchmark silver plan priced around $625. That’s a gap of about $638 a month, or roughly $7,650 a year, sitting behind a decision most people make on autopilot before the clock even factors in. That subsidy isn’t universal: above 400% of the federal poverty level, the premium tax credit drops to zero, about $62,600 for a single person in 2026, which changes the math entirely, but not the deadline.

The mistake that closes the window without you noticing

The mistake isn’t electing COBRA. It’s not knowing your own COBRA quote and your own Marketplace number while the clock is still running, then discovering both once the 60-day window has already passed. By the time most people think to check, they’ve either missed their SEP window entirely, or already elected and started COBRA without ever pulling the comparison, and dropping COBRA voluntarily afterward doesn’t reopen the Marketplace door. Get both numbers inside the window, while the choice is still yours to make.

The 30, 60, and 90 day sequence

In the first 14 days, gather your COBRA quote and your actual post-layoff income estimate, then price a Marketplace plan against it directly. Around day 45 after electing COBRA, your first premium payment is due, a separate deadline from the 60-day election window itself. By day 60 from your original coverage-loss date, both your COBRA election window and your Marketplace Special Enrollment Period close for good, so any decision needs to be final well before that date, not on it. If your income changes later in the year, that can trigger its own new Special Enrollment Period, so a subsidy that looks like zero today isn’t necessarily zero for the rest of the year. If you’ve already missed both windows, the next opportunity is the Marketplace’s annual Open Enrollment Period.

If your former employer’s COBRA notice never actually arrived, or arrived late, the separate rules for a late or missing COBRA notice cover what that does to your own clock. And if a 401(k) came with the job you just lost, the 60-day rollover clock on that account runs on a similar timeline worth tracking at the same time.

Frequently asked questions

If I already said yes to COBRA, can I still switch to the Marketplace? Often, yes, if you’re still inside your original 60-day Special Enrollment Period, which runs from the date your job-based coverage ended, not from when you elected COBRA. You’ll need to end your COBRA coverage in time for the new Marketplace plan to start.

Does turning down COBRA and later deciding I want it reopen my Marketplace window? No. Voluntarily dropping or declining COBRA after your original 60-day Special Enrollment Period closes does not create a new one. Once that window passes, your remaining paths back to the Marketplace are COBRA running out, losing an employer subsidy on it, or the next annual Open Enrollment Period.

What if my income is too high for a subsidy? Above 400% of the federal poverty level, about $62,600 for a single person in 2026, the ACA premium tax credit drops to zero. At that income level, price both plans on their sticker cost, since COBRA and an unsubsidized Marketplace plan can end up close, or COBRA can even come out cheaper depending on your former plan.

How long do I actually have to pay my first COBRA premium? You generally have 45 days after electing COBRA to pay your first premium, which is a separate deadline from the 60-day election window itself. That 45-day window covers your payment, not whether you can still switch to a Marketplace plan, which depends on your original 60-day Special Enrollment Period instead.

What happens if I miss both 60-day windows? You lose access to both COBRA and a Marketplace Special Enrollment Period for the rest of the year, absent another qualifying event like a later income change. Your next chance is the Marketplace’s annual Open Enrollment Period, so treat both 60-day clocks as final, not flexible.