COBRA vs Marketplace: the Two 60-Day Clocks After Coverage Ends

When job-based health coverage ends, two clocks start, and both say 60 days. The COBRA clock counts from the later of the day your coverage ends or the day you get the election notice. The Marketplace clock counts from the day you lose the job coverage, and you can pick a plan up to 60 days before that day. They start from different events, so they rarely end on the same day. This guide does not tell you which plan to pick. It helps you count the two dates, including the common December case, when coverage ends on December 31 and both clocks run through the holidays.

Clock one: the COBRA election period

COBRA lets you keep your employer's group health plan for a limited time after a qualifying event, such as leaving a job or having your hours cut. You pay the full cost yourself.

The election period is set in federal law, 29 U.S.C. 1165. It must last at least 60 days and end no earlier than 60 days after the later of two dates: the day your coverage ends, or the day you receive the COBRA election notice. The Department of Labor's employee guide to COBRA adds the steps before that: your employer has 30 days to tell the plan, and the plan then has 14 days to send you the election notice.

So the notice can arrive weeks after your last day of coverage, and the 60 days count from the notice. Three more points from the same rules:

You can elect late in the window and still be covered from the start. The law says COBRA coverage runs from the qualifying event, so once you elect and pay, it covers the time back to when the old coverage ended.
The first payment is due later. The plan can't require the first premium before 45 days after the day you elect.
The price is the full premium. The plan can charge up to 102 percent of its cost, which is usually far more than the share you paid as an employee.

Clock two: the Marketplace special enrollment period

Losing job-based coverage opens a special enrollment period on the Marketplace. HealthCare.gov's page on COBRA coverage says you can enroll in a Marketplace plan within 60 days of losing your job-based coverage. Its special enrollment page adds that you qualify if you lost coverage in the past 60 days or expect to lose it in the next 60 days.

When the Marketplace plan starts depends on when you pick it:

Picked on or before your last day of job coverage: the plan can start the first day of the next month, so there is no gap.
Picked after: the plan starts the first day of the month after you pick it. Pick on January 20 and it starts February 1.

Marketplace plans may cost less than COBRA, especially if you qualify for savings based on your income. HealthCare.gov suggests comparing the two before deciding.

Switching from COBRA to the Marketplace later

People often elect COBRA to stay covered and then look for something cheaper. HealthCare.gov describes when that works outside open enrollment:

Within 60 days of losing your job coverage, you can still switch, even if you already elected COBRA.
When COBRA runs out, or your former employer stops paying part of it, you get a new 60-day window.
If you drop COBRA early on your own, or stop paying, that does not open a special enrollment period. You wait for the next open enrollment.

The last point is where people get stuck. Ending COBRA in March because a Marketplace plan looks cheaper is fine during open enrollment and a problem outside it. HealthCare.gov's advice is to always check your new coverage start date before you end COBRA.

The December case: coverage ends December 31

Some plans end coverage on your last working day, others at the end of that month. If yours ends on December 31, 2026, the two clocks look like this (the notice date is an example; use the one on your letter):

Three things stand out in December:

Open enrollment runs at the same time. On HealthCare.gov it runs to January 15, 2027, and a plan picked by December 15 starts January 1. Losing job coverage gives you another route: pick by December 31 under the special enrollment period, and the plan can still start January 1.
The holidays eat the window. Offices are closed, mail is slow and the notice may arrive in mid-January. The Marketplace clock is already running then.
A gap is possible but fixable. If you pick a Marketplace plan in January, it starts February 1. COBRA elected within its window can cover January back to the start.

Ask your HR team or plan administrator for the exact last day of coverage. It is the date both clocks hang on, and it is not always your last working day.

For the other dates of the season, see open enrollment 2026 deadlines.

Where Tracy fits

Tracy, the assistant in dEssence, does not read your mail or your HR portal. Send her a photo of each letter, or forward the email, from Telegram, iMessage, Chrome or the web. She keeps the end date of each window and reminds you before it, so the choice happens while both options are still open.

It is the kind of life admin that shows up at a bad moment: right when work is changing, two deadlines arrive by letter. You make the decision, and Tracy keeps the dates.

This article is general information about deadlines, not advice on which coverage to choose. For your situation, the plan administrator named in the COBRA notice and HealthCare.gov are the places to ask.

Frequently asked questions

How long do I have to choose COBRA?

At least 60 days, counted from the later of the day your coverage ends or the day you receive the election notice. The plan's notice gives the exact last day.

Can I sign up for a Marketplace plan before my job coverage ends?

Yes. HealthCare.gov says you qualify if you expect to lose coverage in the next 60 days. Picking a plan on or before your last day of coverage lets it start the first day of the next month.

Can I take COBRA and still switch to the Marketplace?

Yes, within 60 days of losing your job coverage, or when COBRA runs out. Dropping COBRA early on your own outside open enrollment does not open a new window.

Is COBRA retroactive?

Yes. If you elect within the election period and pay, coverage goes back to the day your old coverage ended. The first payment is due no earlier than 45 days after you elect.

What if my coverage ends December 31?

Pick a Marketplace plan by December 31 for a January 1 start, or by December 15 through open enrollment. The Marketplace window then stays open until about March 1, 2027, and the COBRA window runs 60 days from your notice.