If you've been quoted $600 a month for an ACA marketplace plan, a $120 short-term policy can look like a lifesaver.
These plans are marketed hard during open enrollment and every time premiums tick up.
But consumer advocates and state regulators keep flagging the same problem: what you're buying often isn't health insurance in the way most people assume.
Short-term plans were originally designed as a stopgap—coverage for a few months between jobs or while waiting for a policy to start.
Federal rules loosened in 2018 let insurers sell them for up to 364 days and renew them for up to three years in many states.
That turned a temporary patch into a product marketed as year-round coverage.
Under the Affordable Care Act, marketplace plans must cover ten essential benefits, including prescription drugs, maternity care, and mental health treatment.
Short-term plans generally aren't required to cover any of that.
They can also reject you outright for a pre-existing condition, charge women more than men, and cap how much they'll pay out in a year.
Even when a plan does pay, the fine print matters.
A 2020 study in the journal Health Affairs found that short-term plans denied about one in three claims.
Some policies exclude entire categories of care—cancer treatment, surgery, or anything related to a condition you had before signing up.
If you get diagnosed with something serious mid-policy, the insurer may look back at your history and deny the claim.
The price gap is real, though, and that's why people keep signing up.
A 40-year-old in decent health might pay $150 a month for a short-term plan versus $500 or more on the marketplace.
For a freelancer between contracts or someone who missed open enrollment, that difference can feel like the only option.
If you're considering one, read the exclusions page before the price page.
Check whether prescriptions are covered, what the annual or lifetime cap is, and whether you'd need a separate policy for anything you already manage.
Ask specifically what happens if you get a new diagnosis—not just whether you're covered today.
Some, including California, New York, and Massachusetts, have banned or heavily restricted short-term plans.
Others allow the full three-year version.
Where you live changes what you're actually buying.
If you missed open enrollment, you may still qualify for a special enrollment period after a job loss, a move, a marriage, or a birth.
Those windows usually last 60 days, and skipping them means waiting until the next open enrollment in November.
A short-term plan can work as a bridge if you're healthy, you understand the gaps, and you have savings to absorb a denial.
The people who get burned are usually the ones who bought on price and never read what they signed.
Our take: a cheap policy that denies a third of claims isn't cheap—it's a bet that nothing goes wrong in the exact window you need it most.
If you can stretch to a marketplace plan, the extra premium buys real protection.
Final Thoughts
If you truly can't, go in with your eyes open and a backup fund.