COBRA vs. ACA Marketplace: The Real Cost Comparison After Job Loss

When you lose a job, you have 60 days to decide between COBRA and the ACA marketplace. Most people default to COBRA because it's familiar and continues existing coverage. But COBRA often costs 3–5× what an ACA plan costs after subsidies — especially if your income drops. This decision is worth $5,000–$15,000/year. Here's how to compare.

What COBRA actually costs

COBRA allows you to continue your employer-sponsored health insurance after job loss — but you pay the full premium (your share + the employer's share) plus a 2% administrative fee. Most people have no idea how much their employer was subsidizing their coverage until they see the COBRA bill.

When ACA marketplace beats COBRA

ACA subsidies (premium tax credits) are based on your projected annual income for the year. After job loss, if your income drops significantly, you may qualify for substantial subsidies that make an ACA plan dramatically cheaper than COBRA.

ACA subsidy eligibility (2026): You qualify for subsidies if your projected income is between 100% and 400% of the Federal Poverty Level. Subsidies phase out above ~$58,320 (individual) or $120,000 (family of 4). At lower income levels, the savings are massive:

When COBRA makes sense

• You're in the middle of expensive treatment — surgeries, chemo, ongoing specialist care. COBRA maintains your exact provider network and plan, with no disruption. Switching ACA plans mid-treatment can mean new deductibles and potential network breaks.
• You expect to get a new job within 1–3 months and want seamless continuity
• Your income won't drop significantly (no ACA subsidy advantage)
• You're near the end of the year and have met your COBRA plan's out-of-pocket maximum

The COBRA backdating trick (rarely known)

You have 60 days to elect COBRA — but COBRA coverage is retroactive to the date your employer coverage ended. This means you can wait up to 60 days to decide. If you stay healthy, don't elect. If you have a medical event within those 60 days, elect COBRA retroactively and pay the back premiums. You get the protection of COBRA without the ongoing cost if you don't need it. Risk: you must pay all premiums if you retroactively elect.

Frequently asked questions

How long do I have to decide on COBRA?
You have 60 days from the qualifying event or the election notice, whichever is later. Losing job-based coverage also opens a Special Enrollment Period on the ACA marketplace, so both options are live during roughly the same window.

Is COBRA or the marketplace cheaper?
Usually the marketplace, because COBRA charges the full premium — the employer subsidy disappears — plus an administrative fee, while marketplace plans are income-tested for subsidies. In a year when your income drops, subsidies can make the marketplace dramatically cheaper.

When is COBRA the better choice?
When continuity matters: you keep the same network, the same doctors, and any deductible already met during the plan year. If you are mid-treatment or have nearly met your out-of-pocket maximum, that continuity can outweigh a higher premium.

Can I switch from COBRA to the marketplace later?
Only at open enrollment or if you exhaust COBRA — voluntarily dropping it does not create a Special Enrollment Period. That makes the initial 60-day decision more binding than most people realise.