Catastrophic plans: the cheapest premium with the biggest catch

The short version: catastrophic plans have the lowest monthly premiums on the marketplace, but they're only open to people under 30 or those with a hardship or affordability exemption, they come with a very high deductible, and you cannot get premium tax credits on them. For most Tennesseans, a subsidized Silver plan is the better deal.

Who qualifies

You can buy a catastrophic plan only if one of these is true:

• You're under 30 on the day your coverage starts, or
• You're 30 or older and you have a hardship exemption or an affordability exemption — meaning a marketplace plan is considered unaffordable for you or you're facing a qualifying hardship (exemptions are granted through the marketplace application process).

There's no income requirement and no upper age limit beyond the exemption rule. But if you qualify for premium tax credits or cost-sharing reductions, those do not apply to catastrophic plans — not the credits, not the reductions. That's the trade the law makes: cheap premium, no help paying it.

What a catastrophic plan looks like

Catastrophic plans are built for one scenario: a major medical event. The structure:

• Very low monthly premium — typically the cheapest option on the marketplace for its age group.
• Very high deductible — you pay nearly all routine and mid-level costs yourself until you've spent a large amount in the year. After you hit the deductible, the plan covers the rest, up to the 2027 out-of-pocket maximum of $12,000 individual / $24,000 family.
• Essential health benefits covered — like every marketplace plan, catastrophic plans cover the ACA's essential health benefits (hospitalization, emergency care, prescription drugs, mental health, and the rest).
• 3 primary-care visits per year before the deductible — preventive and primary-care visits at the plan's cost-sharing are included even before you've met the deductible.

Beyond that, don't over-read the label: "catastrophic" describes the cost-sharing design, not a separate category of medical care.

Who they're for — and who should skip them

Consider catastrophic if: you're under 30, in good health, earn too much to get premium tax credits (above 400% FPL — roughly $63,840 for a single person in 2027), and want the cheapest possible monthly bill as a safety net against a major event. You're comfortable paying routine care costs out of pocket.

Skip catastrophic if:

• You qualify for premium tax credits or cost-sharing reductions. A subsidized Silver plan will almost always cost you less overall — often less per month and far less when you need care. Run your numbers at How to Estimate Your 2027 Premium Tax Credit before even looking at catastrophic.
• You use health care regularly — prescriptions, a specialist, mental health visits. The high deductible will eat you alive compared to a Silver or Gold plan.
• You're choosing it just because the premium is lowest. The premium is the price of admission, not the total cost. Compare premium × 12 + deductible against a Silver plan first.

FAQ

Are catastrophic plans the same as short-term plans? No. Catastrophic plans are real marketplace plans under the ACA — they cover essential health benefits and have no annual or lifetime limits. Short-term plans are a different, non-ACA product with major gaps; Tennessee has its own rules around them.

Can I use a health savings account (HSA) with a catastrophic plan? Yes. Starting in 2026, federal law treats every catastrophic and bronze plan available through the marketplace as HSA-compatible (IRS Notice 2026-05), whether you buy it on HealthCare.gov or directly from the insurer. For 2027 you can contribute up to $4,500 for yourself or $9,000 for a family. HSAs explained

I'm over 30. Can I still buy a catastrophic plan? Possibly. If HealthCare.gov finds you ineligible for tax credits or cost-sharing reductions because of your income (below 100% of the poverty level, or above the limits), you can generally qualify for a hardship exemption to buy a catastrophic plan. HealthCare.gov checks this automatically from the income you enter; a paper hardship form is also available.

Do catastrophic plans cover preventive care? Yes — like all marketplace plans, they cover preventive services, and they also include 3 primary-care visits per year before the deductible kicks in.

I'm 29 now but turn 30 mid-year. Can I keep my plan? Eligibility is based on your age when coverage starts. If you're under 30 on your coverage start date, you can enroll for that plan year.

If I have a catastrophic plan, can I switch to a regular plan later? Only during open enrollment or if you qualify for a special enrollment period. You can't swap mid-year just because you got sick — that's true of all marketplace plans, and it's one more reason to choose carefully in November.

Sources

• HealthCare.gov — catastrophic health insurance plans: eligibility and coverage rules
• ACA essential health benefits requirements
• Centers for Medicare & Medicaid Services (CMS) — 2027 plan year out-of-pocket maximum rules
• HealthCare.gov — premium tax credit and cost-sharing reduction eligibility (catastrophic plans excluded)

Your next step: before you settle on catastrophic, check whether you'd actually qualify for subsidies — run How to Estimate Your 2027 Premium Tax Credit, then compare a subsidized Silver against the catastrophic option in our Marketplace plan tiers, compared guide.