COBRA vs the Marketplace: How to Compare Them Properly

You have two separate 60-day clocks, and they overlap

Losing job-based coverage triggers two rights at once, and they run on parallel timers that both start around the date your coverage ends.

• COBRA: 60 days to elect continuation of the exact plan you already had.
• Marketplace: a Special Enrollment Period, also 60 days, to buy an individual ACA plan. This one can be used starting up to 60 days before your coverage ends, which is worth knowing if you already have a termination date.

You do not have to pick fast. You have to pick informed, and the two windows give you time to get real numbers for both before committing to either. What you must not do is let both windows lapse while you think about it, because outside them you generally cannot buy an individual plan until the next annual Open Enrollment.

The four numbers that actually decide it

1. What a Marketplace plan costs you after subsidies

Premium tax credits are based on your expected income for the current calendar year, not on what you earned before the job ended. For someone who has just lost their main source of income, that estimate can be dramatically lower than last year's W-2, and the subsidy correspondingly larger. This is the single most common reason people overpay for COBRA: they assume they will not qualify for help, based on a salary they no longer have.

Subsidy rules and income thresholds change from year to year, so do not take a number from an article, including this one. Use the window-shopping tool on HealthCare.gov. It shows real plans at real prices for your ZIP code and income estimate without creating an account or handing your phone number to anyone. If your state runs its own exchange, that tool will redirect you.

2. How much of your deductible you have already burned

This is the factor that flips the decision most often, and the one almost nobody checks. Your deductible and out-of-pocket maximum are tracked per plan, per plan year. Staying on COBRA keeps the same plan and therefore keeps the credit for everything you have already paid. Moving to a Marketplace plan starts a new plan with a new deductible at zero.

Someone who lost their job in February with a $200 deductible spent has essentially nothing to lose by switching. Someone who lost their job in October having already hit a $6,000 out-of-pocket maximum is in a completely different position: for the rest of that plan year, their old plan pays most costs in full, and a new plan would put them back at the start of the ladder. Log in to your current insurer's portal and find the accumulator figures before you do anything else.

3. What care you already have scheduled

Continuity has a price and sometimes it is worth paying. If you are mid-treatment, mid-pregnancy, seeing a specialist who is hard to get into, or on a drug that needs prior authorization, changing plans means re-checking network status, re-doing authorizations, and potentially changing providers. COBRA is the only option that guarantees an identical network, identical formulary, and identical prior authorizations, because it is literally the same plan.

4. Whether you can change your mind later

This one is asymmetric, and it is the reason to think carefully before electing COBRA.

• Choosing the Marketplace first is reversible in one direction only. You cannot later decide you would rather have COBRA once your election window has closed.
• Voluntarily dropping COBRA mid-year does not open a Special Enrollment Period. If you elect COBRA in March and cancel it in June because it is too expensive, you generally cannot buy a Marketplace plan in June. You wait for Open Enrollment.
• Exhausting COBRA does open one. If you ride the coverage to the end of its 18 or 36 months, running out is itself a qualifying event and you get a Special Enrollment Period.
• Open Enrollment resets everything. During the annual window you can drop COBRA and pick a Marketplace plan for the following year regardless of any of the above.

The practical reading: electing COBRA because it is familiar, then discovering in month three that you cannot afford it, is a genuinely bad place to be. Decide whether you can sustain the premium for the whole stretch, not just for the first invoice.

Comparing them without fooling yourself

Work out the total you expect to pay under each option between now and the end of the plan year. The arithmetic is not complicated, but it has to include the second line.

Run it twice: once assuming you barely use the plan, and once assuming a bad year where you hit the out-of-pocket maximum. If one option wins both scenarios, the decision is easy. If they split, you are really choosing between a lower expected cost and a lower worst case, which is a question about your savings and your risk tolerance rather than about insurance.

A worked example

Take someone whose job ended on 31 August, on a family plan, with a plan year that runs to 31 December. Four months remain. Their COBRA estimate is $1,700 per month. A benchmark Marketplace plan would cost them $450 per month after the tax credit their reduced income qualifies them for.

Same family, same two plans, opposite answers. Scenario A saves $5,000 by leaving. Scenario B saves $4,200 by staying. Nothing about the monthly premium tells you which scenario you are in; only the accumulator balance and your expected use do. The out-of-pocket maximum figures here are illustrative, so substitute your own from your plan documents.

Two things worth knowing before you decide

You can pay COBRA premiums from an HSA

Health savings account funds normally cannot be used for insurance premiums, but COBRA premiums are one of the explicit exceptions, as are premiums paid while you are receiving unemployment compensation. If you have a balance sitting in an HSA, it can cover COBRA tax-free, which changes the effective cost meaningfully. Note the separate rule that you can only contribute to an HSA while enrolled in an HSA-qualified high-deductible plan, so check whether the plan you pick still qualifies.

Severance sometimes includes COBRA, and it is negotiable

Employers fairly often agree to pay some months of COBRA premiums as part of an exit package, and it costs them less than additional severance because it is a defined, capped amount. If you are still in conversation about your exit terms, it is worth asking. Get it in writing, and check whether the employer pays the administrator directly or reimburses you, because that affects what happens if you switch plans later.

What to do, in order

1. Find your accumulator balances: deductible paid and out-of-pocket maximum paid, year to date, from your current insurer's member portal.
2. Get your COBRA number. Either wait for the election notice or estimate it from your old paycheck deduction.
3. Window shop on HealthCare.gov with an honest estimate of this year's total income, and note both the premium and the deductible of the plans you would actually accept.
4. Run the two scenarios above. Check that the plans you are comparing include your doctors and drugs.
5. Decide before the earlier of your two 60-day deadlines, and read the deadline guide so you know exactly when that is.