If you have ever typed "cheap health insurance" into a search box between jobs, you have probably seen them: short-term health plans with premiums that look like a rounding error compared to a marketplace policy.
A 40-year-old might be quoted $120 a month instead of $600.
That gap is real, and so is the catch that comes with it.
A new round of state and federal scrutiny is pushing these plans back into the spotlight.
Consumer advocates say the pitch often buries the fine print, and the people who buy them are frequently the ones with the least room for a surprise bill.
Short-term plans are not required to cover the ten essential health benefits that Affordable Care Act plans must include.
That means no guaranteed coverage for prescription drugs, maternity care, mental health treatment, or pre-existing conditions.
Insurers can also cap how much they pay out per year, and some cap how much they pay for any single condition.
The underwriting is the part that trips people up.
You typically answer a health questionnaire, and the insurer can reject you or exclude anything you have been treated for in the past several years.
A back injury from 2021, a thyroid prescription, even a pending test can turn into a denial or a permanent carve-out.
Enrollment has swung wildly depending on the rules.
The Biden administration cut the maximum plan length to three months, with a option to renew for one more.
The Trump administration had previously stretched it to just under a year.
State law matters too, and roughly twenty states now ban or sharply limit these plans, so the same policy may be illegal where you live.
Say you save $400 a month, or $4,800 a year, by choosing a short-term plan over a marketplace policy.
One three-day hospital stay can run $30,000 before insurance.
If your plan caps at $250,000 and excludes your diagnosis, that savings disappears in a single afternoon.
If you are between jobs for 60 to 90 days, healthy, and have savings set aside for a worst-case scenario, a short-term plan can bridge a genuine gap.
It is not a substitute for real coverage, and it should never be the plan you keep for years because the premium feels good.
Read the exclusions page, not the summary.
Call the insurer and ask what happens if you are hospitalized for something they did not list.
And price a marketplace plan at the same time—subsidies often shrink the gap more than people expect, especially for households earning under about $60,000.
If you already have one of these plans, check the expiration date this week.
Many are three months long, and people find out they lapsed only after an emergency room visit.
The appeal of a low premium is easy to understand when rent and groceries are both climbing.
But a health plan is not a subscription you cancel when it stops being convenient.
Final Thoughts
Buying the cheapest option is a bet that nothing goes wrong, and that is a bet most families cannot afford to lose.