The pitch lands in your inbox right after a layoff or a missed open enrollment window: health coverage for a fraction of what a marketplace plan costs.
Short-term health insurance can run $100 to $200 a month for a healthy adult, compared with hundreds more for an ACA plan.
For a household already stretching every dollar, that gap looks like relief.
That gap is real, and so is what you give up to get it.
These policies are not required to cover the ten essential health benefits that ACA plans must include.
That list covers prescription drugs, maternity care, mental health treatment, and preventive services.
Short-term plans often skip all of it, or cap what they pay so tightly that a single diagnosis blows past the limit.
Insurers can review your medical history and reject you, charge more, or attach exclusions for pre-existing conditions.
If you have asthma, diabetes, or a past cancer diagnosis, the condition you most need covered may be written out of the policy entirely.
A short-term plan can last anywhere from a month to under a year, depending on state rules.
When it ends, you reapply — and you can be denied the second time around.
Get sick while covered, and the next application may not go your way.
Even when a plan pays, the math can turn ugly.
Deductibles often run into the thousands, and many policies cap total annual payouts.
A hospital stay that bills at $80,000 might leave you responsible for everything past a $250,000 cap — or past a much smaller one.
Nothing stops an out-of-network ambulance or specialist from landing on your bill.
The federal rules tightened in recent years.
Under a 2024 rule, short-term plans are capped at three months of coverage, with the option to renew for one additional month, and they must carry a clear disclaimer about what they do not cover.
Some states ban them outright or set stricter limits.
The fine print varies enough that you have to check your own state before signing anything.
A healthy person between jobs, waiting out a gap before ACA coverage starts, with savings set aside for a worst-case bill.
Even then, they are a bridge, not a home.
If you qualify for subsidies on HealthCare.gov, a marketplace plan is often cheaper than the sticker price suggests — and it cannot turn you down.
Here is the honest take: a low premium is not the same as low risk.
Before you click buy, read the exclusions page, add up the out-of-pocket maximum, and price a subsidized marketplace plan side by side.
Final Thoughts
The cheapest monthly payment can become the most expensive decision you make all year.