ACA Marketplace (Under-65 Health Insurance)

What the ACA is

The Affordable Care Act (ACA) — formally the "Patient Protection and Affordable Care Act," and informally "Obamacare" — is a federal law signed in 2010 that reshaped individual health insurance. Key provisions include:

• Health insurance marketplaces (exchanges) where individuals shop for coverage
• Pre-existing conditions cannot lead to denial or higher prices
• Children can stay on a parent's plan until age 26
• Preventive care at no extra cost
• Subsidies (tax credits) for qualifying buyers
• Medicaid expansion for low-income adults up to 138% of the FPL

The federal individual mandate penalty was repealed in 2019, though a few states (e.g., CA, DC, MA, NJ, RI; VT has a mandate without a penalty) run their own.

The 10 Essential Health Benefits

Every ACA-compliant plan must cover these categories:

1. Ambulatory (outpatient) services
2. Emergency services
3. Hospitalization
4. Pregnancy, maternity, and newborn care
5. Prescription drugs
6. Mental health and substance use disorder services
7. Rehabilitative and habilitative services and devices
8. Laboratory services
9. Preventive/wellness services and chronic disease management
10. Pediatric services (including vision and dental)

Who qualifies for a marketplace plan

A person can enroll in marketplace coverage if they:

• Live in the U.S. and are a citizen or lawfully present
• Are not incarcerated
• Do not have Medicare

The marketplace / exchanges

The marketplace is where people buy under-65 individual health plans. The federal marketplace is HealthCare.gov, but many states run their own exchange (e.g., CA, CO, CT, NY, PA, WA, and others). State-based exchanges use their own enrollment platforms.

Enrollment periods

• Open Enrollment Period (OEP): generally November 1 to January 15 (some state marketplaces run until Jan 31).
• Special Enrollment Period (SEP): triggered by a qualifying life event — you must act within 60 days. Examples: job loss, marriage/divorce, loss of other coverage, moving to a new ZIP code, a new child or death in the family, citizenship change, change in subsidy eligibility.

Outside the OEP, you generally can't change marketplace coverage unless you qualify for an SEP.

Subsidies (financial help)

The main subsidy is the Advance Premium Tax Credit (APTC), which lowers monthly premiums. To qualify, generally:

• Household income roughly 100–400% of the FPL
• Buying through the marketplace
• No "affordable" employer coverage available (employer coverage is "affordable" if it covers at least 60% of benefits and costs no more than ~8.5% of household income after tax credits)

The subsidy is based on an estimated annual income. At tax time, if a person earned more than estimated they may repay some subsidy; if they earned less, they may get an additional refund. People below ~138% of FPL (in expansion states) typically qualify for Medicaid instead.

FPL dollar figures change yearly and differ in Alaska and Hawaii — confirm current numbers at HealthCare.gov / HHS.gov.

Metal tiers

Marketplace plans are grouped into four metal tiers based on how costs are split between the plan and the member — not the quality of care:

A Bronze plan has the cheapest premium but the highest out-of-pocket costs — which is why people sometimes pair a Bronze plan with an ancillary policy (e.g., hospital indemnity or critical illness) to cushion a big hospital bill. See Critical Illness & Hospital Indemnity Insurance and Ancillary (Supplemental) Insurance with Medicare.

Networks

Like other health plans, marketplace plans use networks (HMO, PPO, EPO). Always check whether preferred doctors and hospitals are in-network before enrolling.

How ACA fits with Medicare

ACA coverage is under-65 insurance — Medicare beneficiaries cannot buy it. For an agency, ACA clients can become future Medicare clients when they age in, and adults under 65 are also candidates for ancillary products.

See also: Medicare Basics — Parts A, B, C & D, Medicare & ACA Enrollment Windows, Ancillary (Supplemental) Insurance with Medicare, Critical Illness & Hospital Indemnity Insurance.