Marketplace Plans vs. Short-Term Health Insurance: Key Differences to Know
Marketplace plans and short-term health insurance look similar on the surface — both get you a monthly premium and an insurance card — but they work very differently underneath. Here are the key differences, based on current federal guidance, so you know what you’re actually comparing.
What’s the Real Difference?
ACA Marketplace plans are required to be guaranteed-issue, use community rating (they can't charge you more based on health status), and cover a set of essential health benefits. Short-term, limited-duration insurance (often called STLDI) is generally exempt from those same requirements, which is what lets it cost less — see our companion guide on how the ACA Marketplace actually works for more on that side. According to KFF's explainer on short-term insurance, that's the fundamental trade-off underneath everything else on this page.
Coverage and Pre-Existing Conditions
Short-term plans can medically underwrite applicants, which means they can deny coverage, exclude specific conditions, or decline to pay claims related to a pre-existing condition. They're also not required to cover the same essential health benefits as Marketplace plans — things like maternity care, mental health and substance use treatment, or prescription drugs may be limited or excluded entirely. Always read a short-term plan's actual policy documents, not just the marketing summary, before assuming what it covers.
Cost and Subsidies
Short-term plans are typically much cheaper month-to-month than Marketplace plans — KFF's research has found the cheapest short-term plans can run at a fifth or less of the cost of the cheapest Bronze Marketplace plan in the same area. But that lower price comes with a catch: short-term plans are not eligible for premium tax credits, and they don't count as minimum essential coverage. If you'd qualify for a subsidy on a Marketplace plan, that discount can close much of the price gap — see our Marketplace guide for how those subsidies work.
How Long Short-Term Plans Can Last
This is an area where the rules have changed over time, and the current status is unsettled — it's worth separating what was historically true from what applies right now. Historically: a 2018 federal rule allowed short-term plans to last up to 364 days, with renewals for up to 36 months total. A 2024 federal rule then tightened that to an initial term of no more than 3 months, with one renewal allowed (about 4 months total). Current status: in 2025, the Department of Labor issued a non-enforcement statement regarding that 2024 rule, which has left the practical duration limits unsettled as of this writing — no new final rule has replaced it. Because this is exactly the kind of rule that can change again, and because state rules can also vary and change independently of the federal baseline (see below), always confirm the actual current terms directly with CMS.gov, the Department of Labor, your state insurance department, and the specific plan you're considering — don't rely on this page, or any single source, for the exact number of months.
State Rules Vary
Beyond the federal baseline, individual states can further restrict or even ban short-term plans entirely, and rules vary widely. KFF's research tracks this state-by-state. If you're considering a short-term plan, check your own state's insurance department for any additional rules before you buy.
Which One Fits Your Situation
Neither option is universally "better" — they solve different problems. A Marketplace plan generally makes more sense if you want guaranteed coverage regardless of health history, comprehensive benefits, or you qualify for a premium tax credit. A short-term plan is generally built for a genuine, temporary coverage gap — between jobs, waiting for other coverage to start — for someone healthy who understands and accepts the coverage trade-offs. MedKept doesn't sell or underwrite either type of plan directly; for a Marketplace quote or to talk through your options with a licensed agent, visit our Health Insurance page.
Insurance disclaimer: MedKept is not an insurance carrier and does not guarantee eligibility, subsidies, enrollment, pricing, or coverage. This guide is for general educational purposes only. For your actual options, compare plans and connect with a licensed agent on our Health Insurance page.