How Do I Actually Compare COBRA's Cost to a Marketplace Plan Before Deciding?
A job change just happened, a letter about continuing your health coverage showed up, and now there’s a window to decide before it closes. COBRA looks familiar because it’s the same plan you already had, but a marketplace plan might cost less — the only way to know is to actually put the numbers side by side.
The quick answer
Comparing COBRA to a marketplace plan generally comes down to three things: the monthly premium difference, the deductible and out-of-pocket maximum on each plan, and whether the doctors, specialists, or medications you currently use are covered the same way. COBRA keeps your exact existing plan and network but usually costs more per month, while marketplace plans vary widely in premium and structure and may or may not match your current coverage.
Why COBRA tends to cost more
Under COBRA, the person who lost job-based coverage typically pays the full premium that the employer previously subsidized, plus in many cases a small administrative fee. That means the same plan that felt affordable as an employee can look very different once the employer’s share disappears. It’s worth requesting the exact COBRA premium in writing rather than estimating, since it’s usually stated clearly in the notice you receive after a qualifying event like a job separation.
What to check on a marketplace plan
- The premium after any subsidy. Marketplace premium tax credits are based on estimated household income for the year and can significantly lower the sticker price, so it’s worth checking eligibility rather than comparing the unsubsidized number.
- The deductible and out-of-pocket maximum. A lower premium sometimes pairs with a higher deductible, which changes the math if you expect to use care during the year.
- Whether your providers are in-network. Marketplace plans often use different networks than employer plans, so a specialist or clinic you rely on may or may not be covered the same way.
Timing and enrollment windows matter
Both options come with deadlines. COBRA generally must be elected within 60 days of losing job-based coverage, and losing that coverage typically also qualifies you for a special enrollment period to sign up for a marketplace plan outside the usual annual window. Missing either deadline can narrow your options, so it’s worth mapping out the dates as soon as the COBRA notice arrives rather than waiting.
A gap coverage detail worth knowing
COBRA can generally be elected retroactively within that 60-day window, meaning if you decide to sign up a few weeks later, coverage can still apply back to the date the previous plan ended, as long as any owed premiums are paid. That flexibility is sometimes a reason people wait to compare options rather than deciding on day one — though the tradeoff is that a marketplace special enrollment period runs on its own separate clock and doesn’t pause while you weigh COBRA.
Health situations that shift the comparison
Someone in the middle of a treatment plan, expecting a procedure, or managing a chronic condition often weighs network continuity more heavily than premium cost, since switching plans mid-treatment can mean re-meeting a deductible or navigating new prior authorization rules. Someone who is generally healthy and rarely uses care may find that a lower-premium marketplace plan, even with a higher deductible, works out to be the lower-cost option over the year.
Final thoughts
There’s no single answer that applies to every situation — it depends on the actual premium quoted for COBRA, what subsidized marketplace plans are available in your area, and how much ongoing care you expect to need. Pulling the specific numbers for both options, rather than relying on general reputation (“COBRA is expensive” or “marketplace plans have bad networks”), is what actually produces a comparison worth acting on.