Losing employer coverage triggers two clocks that people often mash together: the COBRA election window for continuing the same group plan, and a Marketplace special enrollment period (SEP) for buying an individual plan on HealthCare.gov or a state exchange. They are related (job loss is a qualifying event for both pathways) but they are not the same form, the same deadline math, or the same price.
COBRA mechanics: Understanding COBRA health coverage. Election timing: COBRA election deadline. Job-loss money checklist: How to handle a sudden job loss. Marketplace subsidies: Health insurance premium tax credit.
Side-by-side: what you are choosing
| Topic | COBRA continuation | Marketplace SEP plan |
|---|---|---|
| What you buy | Same employer group plan (medical, sometimes dental/vision as offered) | An individual/family plan on the exchange |
| Typical cost cue | Up to about 102% of the full premium (employer share usually gone) unless a temporary subsidy applies | Often lower with a premium tax credit if income qualifies |
| Who you deal with | Plan administrator / COBRA vendor on the election notice | HealthCare.gov or your state Marketplace |
| Network / formulary | Usually the same doctors and drugs as yesterday | May change; check directories before you enroll |
| Deadline flavor | Election window measured from the qualifying event / notice (often up to 60 days—read your packet) | SEP length for loss of coverage is commonly 60 days around the loss—confirm current Marketplace rules |
Temporary federal COBRA premium assistance (when Congress enacts it) is separate from Marketplace PTC: COBRA premium subsidy basics. Do not assume a subsidy is open just because you heard about one in a prior recession year.
How the clocks interact (plain version)
- Qualifying event (e.g., layoff, reduction in hours) ends or will end employer coverage.
- You receive a COBRA election notice with premium quotes and an election deadline (COBRA election deadline).
- Loss of employer coverage generally opens a Marketplace SEP so you can enroll in an exchange plan with an effective date tied to when coverage ends.
- Electing COBRA does not automatically enroll you in Marketplace coverage, and shopping the Marketplace does not elect COBRA for you.
A common planning mistake: waiting until the last day of a long COBRA election window, then discovering the Marketplace SEP timing and effective-date rules do not line up the way you hoped. Calendar both. If you need a gap-free start date, compare COBRA start vs Marketplace effective date in writing before either deadline burns.
Worked example: layoff on September 30
Morgan’s employer coverage ends September 30. The COBRA notice quotes $720/month (102% freight) for medical-only, with an election deadline in the packet about 60 days out. HealthCare.gov shows a Silver plan at $380/month before PTC; with estimated income, PTC brings the quote to $95/month. Deductibles differ: COBRA keeps Morgan’s familiar $1,500 deductible; the Silver plan has a $4,000 deductible (Health insurance deductibles).
Morgan prices worst-case care for the next three months (one specialist visit + prescriptions), compares total premium + expected cost-sharing, and enrolls in the Marketplace plan effective October 1 while the SEP is open—without electing COBRA. If Morgan expected heavy near-term claims inside the old network, full-freight COBRA for a short bridge might still have won; the point is to run both numbers, not to assume COBRA is automatic or always cheaper.
Practical comparison steps
- Save the COBRA election notice PDF the day it arrives.
- Create a HealthCare.gov or state Marketplace account and run plans for the same household size and ZIP.
- Check doctor, hospital, and drug formularies on both options.
- Ask whether any temporary COBRA premium subsidy applies this year (COBRA premium subsidy basics).
- Put COBRA election and Marketplace SEP end dates on a single calendar with coverage end date.
- If dependents need coverage, price kids on Medicaid/CHIP when income fits before assuming COBRA dependents are the only path (see related CHIP/Medicaid guides from the COBRA hub pages).
Checklist
- Separate “elect COBRA” from “enroll Marketplace”—two actions, two systems.
- Read your COBRA packet deadlines; do not rely on a friend’s timeline.
- Confirm Marketplace SEP dates for loss of coverage on the official exchange site.
- Compare 102% COBRA freight vs PTC-adjusted Marketplace premiums plus deductibles.
- Verify networks and formularies before you pick continuity vs savings.
- Keep proof of timely election or enrollment; coverage can fail for missed deadlines or nonpayment.
Educational only. Not insurance, tax, or legal advice. COBRA, mini-COBRA, Marketplace SEP, and premium tax credit rules depend on employer size, state, statute year, and your notice packet; read the election materials and confirm with the plan administrator and current HealthCare.gov / state Marketplace guidance.