Fact-checked by the Smart Insurance 101 editorial team
Quick Answer
Short term health insurance provides temporary medical coverage lasting 30 to 364 days per federal rules, with premiums averaging $124–$178 per month — far below ACA plan costs. As of July 2025, these plans suit healthy adults in coverage gaps but exclude pre-existing conditions and do not meet ACA minimum essential coverage standards.
Short term health insurance is a limited-duration medical plan designed to bridge temporary gaps in coverage — not replace comprehensive insurance. According to KFF’s analysis of the short-term insurance market, enrollment in these plans has grown significantly as ACA premiums continue to climb, with some silver benchmark plans averaging over $450 per month before subsidies.
Here’s the thing — the tradeoffs really matter before you sign anything. These plans operate completely outside Affordable Care Act protections. The savings are real. But so are the gaps.
What Exactly Is Short Term Health Insurance?
Short term health insurance is a temporary medical plan that covers a defined period — typically 30 to 364 days under current federal guidelines. The Centers for Medicare and Medicaid Services (CMS) classifies these as non-ACA-compliant plans, meaning they’re exempt from the Essential Health Benefits requirement entirely.
Because they bypass ACA regulations, insurers can deny applicants based on health status, exclude pre-existing conditions, and cap annual or lifetime benefits. These aren’t marketplace plans — not even close. They’re underwritten products sold by private carriers like UnitedHealthcare, Pivot Health, and National General, and they play by a very different set of rules.
How Short Term Plans Differ from ACA Plans
ACA marketplace plans must cover 10 Essential Health Benefits, including mental health, maternity care, and prescription drugs. Short term plans? No such requirement. Insurers can design benefits almost however they like, which is exactly why premiums run so much lower — but the coverage is far narrower than most people realize until they actually need it.
Key Takeaway: Short term health insurance is regulated by CMS as a non-ACA product, meaning insurers can legally exclude pre-existing conditions and cap benefits. Plans typically last up to 364 days; learn more about how medical insurance works before comparing options.
What Are the Main Advantages of Short Term Health Insurance?
Cost. That’s the headline. Monthly premiums run dramatically lower than ACA plans — often by 50–80% — because carriers underwrite applicants and cut out high-risk coverage categories altogether.
Beyond price, there’s real enrollment flexibility here. Unlike ACA marketplace plans, short term coverage has no open enrollment window to worry about. Apply any day of the year, and you can often have coverage within 24 hours of approval. That kind of speed matters in very specific situations — a sudden job change, a gap before Medicare kicks in at 65, or a waiting period between employer health benefits.
Key Benefits at a Glance
- Premiums averaging $124–$178 per month for a healthy 30-year-old
- No open enrollment restrictions — apply any time
- Coverage can begin within one business day
- Flexible term lengths from 30 days to nearly one year
- Some plans include access to large PPO networks
Honestly, healthy individuals who rarely need medical care and genuinely can’t afford ACA premiums will find the most practical value here. If you’re also trying to figure out how provider networks factor into all this, our guide on HMO vs PPO health insurance plans explains how those choices affect your out-of-pocket costs in the real world.
Key Takeaway: The biggest draw of short term health insurance is premium savings of up to 80% versus ACA plans, with same-week enrollment available year-round. However, as KFF research notes, lower costs come with significant coverage restrictions that healthy enrollees may not fully anticipate.
What Are the Most Serious Drawbacks?
Pre-existing condition exclusions. That’s the big one. Diabetes, heart disease, asthma — if it was diagnosed or treated before your enrollment date, claims tied to that condition are almost certainly getting denied. This isn’t a loophole or a technicality. It’s the actual mechanism that keeps premiums low.
And the gaps go well beyond that. Most short term plans don’t cover maternity care, mental health services, substance use treatment, or preventive care at no cost. The HealthCare.gov glossary on short term health insurance explicitly warns consumers that these plans lack ACA consumer protections — and that warning is worth taking seriously.
“Short-term plans can look like a bargain until you actually get sick. The fine print on exclusions is where people get hurt financially — a single hospitalization can result in tens of thousands of dollars in uncovered costs.”
Benefit Caps and Renewal Limits
Many plans impose annual benefit maximums of $250,000 to $1 million. A serious illness or one complicated surgery can blow past those caps faster than you’d think. Federal rules also prevent plans from running beyond 364 days per policy term, and some states go further — imposing even shorter limits or banning these plans outright.
Worth noting, too: short term coverage doesn’t count as minimum essential coverage (MEC) under the ACA. The federal individual mandate penalty sits at $0 right now, but states like Massachusetts, New Jersey, and California still assess their own penalties for going without MEC. For a broader picture of where medical costs are heading, see our coverage of how medical coverage is shrinking nationwide.
Key Takeaway: Short term health insurance excludes pre-existing conditions and frequently caps benefits at $1 million or less annually. HealthCare.gov warns these plans lack ACA protections — a single major health event can leave enrollees with five- or six-figure uncovered medical bills.
| Feature | Short Term Health Insurance | ACA Marketplace Plan |
|---|---|---|
| Average Monthly Premium | $124–$178 | $450–$600 (before subsidies) |
| Pre-Existing Conditions Covered | No | Yes (required by law) |
| Essential Health Benefits | Not required | All 10 required |
| Maximum Plan Duration | 364 days (federal limit) | 12 months (renews annually) |
| Annual Benefit Cap | $250,000–$2 million (varies) | No lifetime or annual cap (required) |
| Open Enrollment Required | No — apply anytime | Yes — Nov 1 – Jan 15 (federal) |
| Counts as Minimum Essential Coverage | No | Yes |
| Prescription Drug Coverage | Rarely included | Always included |
Who Is Short Term Health Insurance Actually Right For?
Look, this type of plan works for a pretty narrow group. Healthy adults with no chronic conditions who are facing a specific, time-limited coverage gap. It’s a bridge — not a foundation — and that distinction matters enormously.
The strongest use cases? Recent college graduates aging off a parent’s plan before employer benefits kick in. Workers between jobs who simply can’t stomach COBRA continuation coverage costs — which the Department of Labor reports averages over $600 per month for individual coverage. And early retirees stuck in that awkward waiting period before Medicare eligibility hits at 65.
Who Should Avoid These Plans
Anyone managing a chronic condition, taking ongoing prescriptions, or heading toward a planned procedure should steer clear. The claim denial risk is substantial — not theoretical. Pregnant individuals or anyone planning a pregnancy should also look elsewhere, because maternity coverage is almost never included in these plans.
Self-employed workers often stumble onto short term coverage as a quick way to cut costs, but there are genuinely better options. Our in-depth guide to health insurance for self-employed workers covers ACA marketplace options, Health Reimbursement Arrangements, and association health plans that actually protect you when something goes wrong.
Key Takeaway: Short term health insurance fits a specific profile — healthy adults facing coverage gaps of under 12 months. Workers losing job-based coverage may find COBRA or ACA Special Enrollment Period plans more protective; the Department of Labor provides COBRA election details that are worth reviewing before choosing a short term plan.
How Do State Rules Affect Short Term Health Insurance Options?
This is where things get complicated fast. State regulations vary dramatically — and they directly determine whether short term health insurance is even an option for you. Federal rules cap duration at 364 days, but states can impose stricter limits. Or ban these plans entirely.
California, New York, New Jersey, Massachusetts, and Washington have effectively shut out short term plans or severely restricted their sale. Residents there essentially have to use ACA marketplace coverage or Medicaid. Meanwhile, states like Texas, Florida, and Georgia allow plans up to the full 364-day federal maximum with renewal options. According to the National Conference of State Legislatures (NCSL), at least 15 states have enacted restrictions beyond the federal baseline.
The 2024 Biden Administration Rule Change
In 2024, the Biden administration finalized a rule cutting maximum initial short term plan duration to just 3 months, with total coverage (including renewals) capped at 4 months. Here’s where it gets messy — federal court injunctions have blocked enforcement in multiple states as of mid-2025. The legal landscape is genuinely in flux right now. Checking your state insurance commissioner’s website before enrolling isn’t optional; it’s essential. For a broader look at how regulatory and market forces are reshaping insurance costs, our explainer on why insurance premiums are exploding is worth a read.
Key Takeaway: At least 15 states restrict short term health insurance beyond federal rules, and 5 states ban them outright. NCSL’s tracker is the clearest reference for current state-by-state rules — always verify local regulations before purchasing any short term plan.
Frequently Asked Questions
Does short term health insurance cover pre-existing conditions?
No. Short term health insurance plans are legally permitted to exclude pre-existing conditions entirely. Any medical condition diagnosed, treated, or showing symptoms before your coverage start date is typically excluded from benefits under these plans.
Can I use short term health insurance instead of an ACA plan?
Technically yes, but it’s generally inadvisable for anyone with real health needs. Short term health insurance doesn’t meet ACA minimum essential coverage standards and excludes many benefits ACA plans are required to provide. And if you qualify for premium tax credits, an ACA plan may cost a lot less than you’re assuming.
How long can short term health insurance last?
Under current federal rules, a single short term plan can last up to 364 days. However, the 2024 Biden administration rule attempted to cap initial terms at 3 months; court injunctions have delayed enforcement. State rules vary significantly and may impose shorter limits.
Is short term health insurance worth it for a gap between jobs?
For healthy individuals, short term health insurance can be a cost-effective bridge during brief employment gaps. That said, compare it against COBRA continuation coverage and ACA Special Enrollment Period plans first — especially if you have any ongoing prescriptions or pending medical care lined up.
What happens if I get seriously ill while on a short term plan?
You’re on the hook for any costs that exceed your plan’s benefit cap or fall under an exclusion. A major hospitalization can blow past a $250,000 annual benefit maximum without much trouble. Knowing the difference between your deductible and out-of-pocket maximum is critical here — our guide on health insurance deductibles vs out-of-pocket maximums breaks down how these limits actually interact.
Can I get short term health insurance in any state?
No. States including California, New York, New Jersey, Massachusetts, and Washington have banned or severely restricted short term plans. At least 15 states impose rules stricter than federal guidelines. Always verify availability with your state insurance commissioner before applying.
Sources
- KFF — Short-Term Health Insurance: Background and Policy Options
- HealthCare.gov — Short-Term Health Insurance Glossary Entry
- CMS — Short-Term Limited Duration Insurance Final Rule FAQs
- U.S. Department of Labor — COBRA Continuation Coverage
- National Conference of State Legislatures — Short-Term Limited Duration Health Insurance
- CMS — 2024 Marketplace Open Enrollment Period Overview
- Consumer Reports — Short-Term Health Insurance Plans: What to Know
