- ACA plans can't turn you down for health history and must cover the 10 essential health benefits.
- Private plans can cost less for healthy people, but some are limited-benefit and not ACA-qualified.
- If you qualify for a large subsidy, an ACA plan is usually hard to beat.
- The right answer depends on health, income, doctors and risk tolerance, not on which plan has the lowest premium.
If you buy health insurance on your own, without an employer, you'll hear about two very different kinds of plan: ACA Marketplace plans and private plans sold outside the Marketplace. Agents who sell only one kind will tell you it's the obvious choice. It usually isn't. Here's how they actually compare.
What is an ACA Marketplace plan?
ACA plans (sometimes called Obamacare plans) are major-medical policies that meet the Affordable Care Act's rules. They're sold through HealthCare.gov or your state's own exchange, and the same plans are often available directly from carriers or through a licensed agent.
- Guaranteed issue: you can't be denied or charged more for pre-existing conditions.
- They cover the 10 essential health benefits, including hospitalization, maternity, mental health and prescriptions.
- There's an annual out-of-pocket maximum, after which the plan pays 100% of covered in-network care.
- Income-based subsidies (premium tax credits) can lower the monthly cost, sometimes dramatically.
- You generally enroll during open enrollment or after a qualifying life event.
What is a private health plan?
"Private plan" is a broad label for coverage sold outside the Marketplace. It covers a wide range: some are comprehensive, medically underwritten plans, while others are limited-benefit, fixed-indemnity or other excepted-benefit plans that pay set amounts for specific services.
- Often available year-round, not only during open enrollment.
- May use medical underwriting, which means your health history can affect approval and price.
- Can offer broad PPO-style networks and lower premiums for healthy applicants.
- May exclude pre-existing conditions or cap benefits. Some do not count as minimum essential coverage.
- Not eligible for Marketplace subsidies.
Advisor tip: A good advisor will tell you plainly whether a plan is ACA-qualified major medical or a limited-benefit plan. If you can't get a straight answer, walk away.
Side by side
- Pre-existing conditions: ACA plans cover them. Private plans vary and may exclude or rate for them.
- Cost: ACA plans can be very affordable with a subsidy and expensive without one. Private plans are often cheaper for healthy, unsubsidized buyers.
- Networks: many ACA plans use narrower HMO or EPO networks. Some private plans offer national PPO-style access.
- When you can buy: ACA plans during open enrollment or a Special Enrollment Period. Private plans often any time.
- Protection against catastrophe: ACA plans have a legal out-of-pocket maximum. With a limited-benefit plan, check the benefit caps carefully.
Who usually does better with an ACA plan?
- Anyone who qualifies for a meaningful subsidy.
- People with ongoing conditions, regular specialist care or expensive prescriptions.
- Anyone planning a pregnancy.
- People who want the strongest protection against a worst-case year.
Who might do better with a private plan?
- Healthy self-employed people and families who earn too much for a meaningful subsidy.
- People who travel or split time between states and want a broad network.
- Anyone who missed open enrollment and doesn't have a qualifying event, as a bridge.
How I help you decide
I start with your doctors, prescriptions, budget and income, check whether you qualify for a subsidy under the current rules, and then lay out the realistic options side by side, including what each plan does not cover. You make the decision. My job is to make sure it's an informed one.
Luis Ruiz is a licensed health insurance advisor (NPN 22256582) based in Orlando, Florida, and licensed in all 50 states. He helps self-employed people, business owners and families compare private and ACA coverage. More about Luis.
This guide is general information, not legal, tax or individualized insurance advice. Rules change, so always confirm details for your situation. Last reviewed October 1, 2026.