If you’re leaving a job, two of the main options are continuing your old employer plan through COBRA or moving to a new plan on the ACA Marketplace. They aren’t the only routes. A spouse’s or partner’s employer plan may be able to add you — that request has its own deadline set by that plan, which can be shorter than the Marketplace window, so ask their HR right away rather than assuming you have the same 60 days. And healthcare.gov screens applicants for Medicaid and CHIP at the same time, which matters most in exactly this situation, when income has just dropped. Both work — what decides between them is cost, how long you have to choose, and whether the choice can be undone later. That last part is the one people miss, and it’s the one that can leave you stuck.
- COBRA continues your exact employer plan, but you generally pay the full premium plus up to a 2% administrative fee — the employer's share disappears.
- A Marketplace plan is a new policy, and its cost may be lowered by a premium tax credit — worked out from your household size and estimated household income against a benchmark plan in your area, not from income alone. No such credit applies to COBRA.
- You generally get at least 60 days to elect COBRA. Losing job coverage also generally opens a Marketplace Special Enrollment Period — confirm the exact window on healthcare.gov.
- Voluntarily dropping COBRA partway through generally does NOT reopen a Marketplace enrollment window. Letting it run out at the end of its term generally does.
What each option actually costs
COBRA continues the employer group coverage you had — the same plan, network and accumulated deductible, as long as the employer keeps offering it. It tracks the coverage available to employees still on the plan, so if the employer changes or drops it, your COBRA changes with it. The trade-off is who pays for it. Once you leave, your former employer can require you to cover the full cost of the plan, meaning your old paycheck deduction plus the share your employer used to contribute, plus up to a 2% administrative fee. That’s often a real jump, not because the plan changed, but because the subsidy that made it affordable is gone.
A Marketplace plan works differently. It’s a new policy, not a continuation of your old one, so the deductible resets and the network may be different. Depending on your household size and estimated household income — measured against a benchmark plan in your area — you may qualify for a premium tax credit that lowers your monthly cost. No equivalent applies to COBRA. For a lot of people between jobs, the premium tax credit is what actually decides which option is cheaper, and it’s worth running an estimate on healthcare.gov before assuming either plan’s sticker price is the real number.
The clock: how long you actually have to decide
COBRA gives you an election period of at least 60 days, starting from the later of the date you’re sent the election notice or the date your coverage would otherwise end. That’s a real window, not a same-week decision — but it’s worth doing the Marketplace comparison early rather than waiting until the deadline is close.
Losing job-based coverage is generally a qualifying life event that opens a Marketplace Special Enrollment Period (SEP) as well. The exact window and what proof you’ll need to confirm the qualifying event depend on your specific situation — healthcare.gov is where to confirm the current rules for your case rather than relying on a generic timeline.
If you elect COBRA and pay the premiums on time, coverage for a job-loss or reduced-hours qualifying event generally lasts up to 18 months. Federal COBRA generally applies to employers with 20 or more employees in the prior year. If your employer was smaller, ask the plan administrator whether North Carolina’s state continuation coverage applies to your fully insured group plan before assuming there’s no continuation option at all.
The one-way door: why “I’ll switch later” often doesn’t work
This is the part of the decision that’s easy to miss, and it’s the reason this comparison deserves more than a quick guess. If you elect COBRA planning to keep it for a few months and then switch to a Marketplace plan once you’ve found your footing, that plan doesn’t always work the way people expect.
Voluntarily dropping COBRA partway through its term generally does not open a Marketplace Special Enrollment Period. One important exception sits right at the start: the Special Enrollment Period opened by losing your job-based coverage generally runs 60 days from that loss, and electing COBRA does not close it — so within that window you can still switch. It is after the window that the choice hardens. You made a choice to leave COBRA on your own timeline, not because a qualifying event occurred, and the Marketplace generally doesn’t treat that as one. Letting COBRA run its full term out, on the other hand, generally does open an SEP to move to a Marketplace plan.
In practice, that means “I’ll switch to Marketplace once I find a cheaper plan” can leave you stuck without a way to actually make that switch until the next annual Open Enrollment. If there’s a real chance you’ll want to move off COBRA before its term ends, that’s a reason to seriously compare a Marketplace plan now, not treat COBRA as a placeholder you can leave whenever you want.
Comparing the two
| COBRA | Marketplace plan | |
|---|---|---|
| What it is | Continuing your employer plan as it stands for current employees | A new individual/family policy |
| Who pays | You — full premium plus up to a 2% fee | You, possibly reduced by a premium tax credit |
| Network & deductible | Unchanged from your old plan | New — may differ, deductible resets |
| Decision window | Generally at least 60 days to elect | An SEP triggered by the job loss — confirm timing on healthcare.gov |
| Changing your mind later | Dropping it early generally does NOT reopen an SEP | N/A — this is the plan you’re comparing into |
| Typical duration | Up to 18 months for job loss/reduced hours | Ongoing, renews annually |
Making the call
Neither option is automatically right. If you’re mid-treatment with a specialist, partway through meeting a deductible, or your household simply values continuity, COBRA’s higher price can be worth it for a defined stretch. If a premium tax credit brings a Marketplace plan’s real cost below COBRA’s, the Marketplace side may be the better fit.
What tends to go wrong is skipping the comparison — electing COBRA because it’s the option HR mentions first, without pricing what a Marketplace plan and its potential tax credit would look like. The job transition takes all the attention, and the coverage decision ends up made in the last few days of the window, without the comparison that would have shown which option actually fit.
For more on how these options (including a short-term plan for a brief, defined gap, and a spouse’s plan) stack up, see the full comparison of health coverage options after leaving a job. If a fixed benefit plan is part of what you’re weighing, here’s how that kind of coverage pays — it works differently from both COBRA and a Marketplace plan. And if you’re within a few years of 65, raise Medicare timing in the same conversation — COBRA does not count as current-employment coverage for Medicare’s Part B enrollment window.
If you’ve recently left a job or know it’s coming, I can walk through what COBRA and a Marketplace plan would actually cost for your household side by side, including whether a premium tax credit applies. Book a call and we’ll compare real numbers before you have to decide.
