Catastrophic vs. Bronze for 2027: Read the Deductible, Not the Premium

Open enrollment for 2027 coverage starts November 1. If you are shopping without a premium tax credit this year, two plans will sit at the bottom of the price list: a bronze plan and, if an insurer in your county offers one, a catastrophic plan. The premium difference between them is usually small. The difference in what you get is not small, and it is written in one number most people never read past.

The deductible on a catastrophic plan is the out-of-pocket maximum. For 2027 that is $12,000 for one person and $24,000 for a family. You pay everything up to that line, and the plan pays everything after it. There is no middle.

Exhibit A: What a catastrophic plan is, in one paragraph

A catastrophic plan is a marketplace plan with the lowest premium the law allows and a deductible set equal to the annual out-of-pocket limit. For plan year 2027 the Department of Health and Human Services set that limit at $12,000 individual / $24,000 family (it was $10,600 / $21,200 for 2026). Two things are covered before the deductible: the preventive services every marketplace plan must cover at no cost, and at least three primary care visits a year (45 C.F.R. § 156.155). Everything else, including a prescription, an urgent care visit, and the ER, is yours to pay at the plan's negotiated rate until you have spent the full deductible.

A bronze plan has a deductible too, often a large one, but it is usually below the out-of-pocket maximum, and cost-sharing (copays, coinsurance) kicks in between the two. The bronze premium is higher. Whether the extra premium buys anything depends entirely on how your year goes, which is the part nobody can tell you.

Exhibit B: Who can buy one in 2027

Until 2026, catastrophic plans were for people under 30 or people with a hardship exemption. In September 2025 CMS expanded the hardship exemption to people who cannot get a premium tax credit because their projected income is above 400% of the federal poverty level, or below 100% of it. That is the group the subsidy cliff created, and it is why a 52-year-old self-employed photographer can now buy a plan that used to be for 26-year-olds.

Three rules to know before you count on it:

No tax credit, ever. A premium tax credit cannot be applied to a catastrophic plan (26 U.S.C. § 36B(c)(3)(A)). If you qualify for a credit, a subsidized bronze or silver plan will almost always cost less than an unsubsidized catastrophic one.

Not every county has one. Insurers choose whether to offer a catastrophic plan. Check the plan list for your ZIP before you plan around it.

The design changes in 2028, not 2027. HHS finalized a different catastrophic structure for plan year 2028. For 2027 the plan works as described here.

Exhibit C: The HSA changed the math this year

Starting with months after December 31, 2025, every bronze and catastrophic plan sold on an exchange counts as a high-deductible health plan for Health Savings Account purposes (26 U.S.C. § 223(c)(2), as amended by § 71307 of the 2025 reconciliation law; IRS Notice 2026-5). That means the premium you save by choosing either plan can go into an HSA, pre-tax, and come out tax-free for care. The 2027 contribution limits are $4,500 for self-only coverage and $9,000 for family coverage, plus $1,000 if you are 55 or older.

The same law lets you pay a direct primary care membership from the HSA, up to $150 a month for one person or $300 a month for an arrangement covering more than one, without losing HSA eligibility (26 U.S.C. § 223(c)(1)(E); IRS Notice 2026-5). The ceiling is a cliff, not a cap: a membership that costs more than that is not treated as direct primary care under the rule, and holding one makes you ineligible to contribute at all. The arrangement must be a flat periodic fee for primary care only; prescription drugs other than vaccines and anything needing general anesthesia fall outside it. For someone pairing a catastrophic plan with a flat-fee primary care practice under the limit, that is the first time the two have fit together on paper.

Exhibit D: The three numbers to compare

Write these down for each plan you are considering. Ignore everything else on the comparison page until you have them.

1. Premium × 12. What a healthy year costs.
2. Deductible. What you pay before the plan pays anything beyond preventive care and the three visits. On a catastrophic plan this is the same as number 3.
3. Out-of-pocket maximum. Premium × 12 plus this number is what a bad year costs. For 2027 no marketplace plan can set it above $12,000 / $24,000.

Then ask one question of each plan: if I have a $9,000 year, what do I pay? On a catastrophic plan the answer is the premiums plus $9,000. On a bronze plan it is the premiums plus the deductible plus coinsurance up to the cap. Run the same question at $2,000 and at $30,000. The plan that wins all three is rare. The one that wins the year you actually have is the one you wanted.

What does not change with either plan

Under both plans you are paying for most care yourself until the deductible, at the insurer's negotiated rate. Two things to know about that stretch:

• You can ask any provider for the self-pay price for a service and choose not to file a claim for it. If you do, federal law entitles you to a written Good Faith Estimate and, if the bill comes in $400 or more above it, a federal dispute (45 C.F.R. § 149.610). What you pay that way does not count toward your deductible, so compare the self-pay quote against the plan's allowed amount first. How the estimate and the $400 rule work.
• Hospital financial assistance does not stop at the insured. Nonprofit hospitals' policies often cover the patient's share after insurance, and several states require it. Your state's rules show what applies where you live.

Your Move

Before November 1: find out whether a catastrophic plan is offered in your county, and whether you qualify (under 30, or the hardship exemption for income above 400% of the federal poverty level). Pull the three numbers for it and for the lowest bronze plan.

If you take either: open the HSA the same week. The premium you did not spend is the money that pays the deductible.

Either way: know what applies if you end up paying for a visit yourself. The estimate, the dispute, and the hospital's assistance policy do not care what card is in your wallet.

Find your state's rules → — the written estimate you can demand, the $400 dispute, and the hospital financial assistance floor, cited to the statute.

Figures are for plan year 2027 as published by HHS and the IRS as of October 2026. BillFighter is a tool that helps you understand and fight medical bills. It is not an insurance broker, does not recommend plans, and this is not legal, tax, or insurance advice.