Affordable Care Act

About the ACA

Promotional image for KFF video How Affordable is the Affordable Care Act

Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

The ACA MarketplaceS

In Preliminary Rate Filings, ACA Marketplace Insurers Largely Propose Double-Digit Premium Increase For 2027, Following a Steep Climb This Year 

ACA Marketplace insurers are proposing a median premium increase of 14% for 2027— indicating a likely second consecutive year of double-digit increases, according to a new analysis of preliminary rate filings in 16 states and DC. If these increases hold, typical premiums for insurers participating in the ACA Marketplaces would jump by more than one-third between 2025 and 2027.

The Average Marketplace Deductible Grew by About $1,000 Per Person in 2026, With More Enrollees Shifting to Higher-Deductible Plans as Enhanced Tax Credits Expired

The average Affordable Care Act (ACA) Marketplace deductible experienced the steepest increase in history—growing by 37% or over $1,000, from $2,759 in 2025 to $3,786 in 2026 as enhanced premium tax credits expired, according to a new KFF analysis. After the enhanced tax credits ended, many Marketplace shoppers shifted toward lower-premium, higher-deductible plans.

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  • Medicaid: What to Watch in 2019 from the Administration, Congress, and the States

    Issue Brief

    Medicaid, the provider of health insurance coverage for about one in five Americans and the largest payer for long-term care services in the community and nursing homes, continues to be a key part of health policy debates at the federal and state level. Important Medicaid issues to watch in 2019 include Medicaid expansion developments amid ongoing litigation about the ACA’s constitutionality as well as Medicaid demonstration waiver activities, including those focused on work requirements and…

  • A Comprehensive Review of Research Finds That the ACA Medicaid Expansion Has Reduced the Uninsured Rate and Uncompensated Care Costs in Expansion States, While Increasing Affordability and Access to Care and Producing State Budget Savings   

    News Release

      Multiple studies over the last five years find that the Affordable Care Act’s Medicaid expansion has increased health coverage, affordability, and access to care while producing budget savings for states and reductions in uncompensated care costs for hospitals and clinics, according to a KFF review of more than 300 studies and policy reports. Thirty-six states and the District of Columbia have adopted the ACA Medicaid expansion. The literature review provides a useful reference on…

  • “Partial Medicaid Expansion” with ACA Enhanced Matching Funds: Implications for Financing and Coverage

    Issue Brief

    The Affordable Care Act (ACA) provides enhanced federal matching funds to states that expand Medicaid to nonelderly adults up to 138% of the federal poverty level (FPL, $17,236/year for an individual in 2019). The ACA enhanced match (93% in 2019, and 90% in 2020 and thereafter) is substantially higher than states’ traditional Medicaid matching rate. A few states have sought Section 1115 demonstration waiver authority from the Centers for Medicare and Medicaid Services (CMS) to…

  • Tax Subsidies for Private Health Insurance

    Issue Brief

    This brief describes the different forms of tax assistance for private health insurance, including subsidies offered through the Affordable Care Act's marketplaces and benefits for people who are self-employed or who have employer-based coverage. The brief also provides examples of how the subsidies work and how the amounts may differ by income and type of coverage.

  • Democrats Like Medicare-for-All, but Swing Voters Don’t

    From Drew Altman

    Medicare-for-all is popular with Democrats in battleground states, but not with swing voters. In this Axios column, Drew Altman discusses the implications of the KFF-Cook Political Report poll findings. 

  • Even Supporters May Not Understand Medicare-for-All

    From Drew Altman

    In this Axios column, Drew Altman shows that the majority of supporters don’t know how Medicare-for-all works, with both positive and negative implications for support if they knew more.

  • The Role Of Health Care In The 2020 Election

    Interactive

    This interactive map highlights what voters from the 2020 general election and Democratic primary voters said about health care as they vote, based on KFF's analysis of the state-level AP VoteCast data collected in most states. The primary election data also includes state-specific charts highlighting where health care ranks as issue, views about a single-payer health plan and a public option, and other health care findings from the AP VoteCast data with key demographic breakouts.