Short-term health insurance has quietly become the fastest-growing product in the individual market, and the pitch is hard to ignore: a fraction of what an Affordable Care Act plan costs, sometimes $50 to $100 a month for a healthy adult.
Roughly 3 million Americans now carry this coverage, according to estimates from the health policy nonprofit KFF, up from fewer than a million a decade ago.
The plans are legal, widely sold, and aggressively marketed during open enrollment season, when shoppers are already stressed about rising premiums.
Here's the catch that the ads don't lead with.
These policies are not ACA-compliant, which means insurers can deny you coverage based on your medical history, charge you more for it, or refuse to pay for anything related to a pre-existing condition.
If you have high blood pressure, a past cancer diagnosis, or even a treated back injury, that condition can be excluded entirely from your plan.
A flare-up of the diabetes you already had?
Short-term plans typically don't cover maternity care, prescription drugs, mental health treatment, or preventive services like annual physicals or cancer screenings.
Many cap how much they'll pay out in a year, and some cap what they'll pay over a lifetime.
The ACA banned annual and lifetime limits for essential benefits; short-term plans aren't bound by those rules.
A single hospitalization can blow past a policy's cap and leave you holding the rest of the bill.
Short-term plans have lower loss ratios, meaning they pay out a smaller share of premiums in claims than ACA plans do.
And the federal rules governing them loosened under a 2018 expansion that stretched coverage periods from three months to just under a year, with renewals that could keep people in short-term plans for years.
The Biden administration tightened that window back to four months in 2024, but the products remain widely available.
The real trap is the trap of feeling insured.
People buy a cheap plan, skip the ACA marketplace because the subsidy math looks confusing, then get hit with a $40,000 hospital bill they thought was covered.
An ACA plan with a subsidy often costs less than people assume, especially for households earning under 400% of the federal poverty line.
The government's healthcare.gov calculator takes about five minutes.
Short-term coverage can make sense for a narrow slice of people: those between jobs for a few months, waiting on employer coverage to start, or in a gap before Medicare kicks in.
Even then, read the exclusions page, not the brochure.
If you're healthy, solvent, and truly temporary, it's a stopgap.
Final Thoughts
If you have any ongoing condition or any chance of needing real care, it's a gamble with your savings as the stake.