Affordable Care Act

About the ACA

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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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  • How Affordable Care Act Repeal and Replace Plans Might Shift Health Insurance Tax Credits

    Issue Brief

    The Affordable Care Act, also known as Obamacare, and leading replacement proposals rely on refundable tax credits to help individual market enrollees pay for premiums, although the credit amounts are set quite differently. This analysis compares estimates of an average 2020 tax credit amount under the ACA with averages under the House Republicans' American Health Care Act, introduced March 6, 2017.

  • Coverage Expansions and the Remaining Uninsured: A Look at California During Year One of ACA Implementation

    Report

    California is a bellwether state for understanding the impact of the Affordable Care Act (ACA). Much attention has been paid to enrollment in California's new coverage options, such as the Medicaid expansion (Medi-Cal) and plans sold through ACA marketplaces (Covered California), and to changes in the uninsured from 2013 to 2014. However, less is known about how this coverage has affected people’s access to care and financial security, and why others remain uninsured. This report,…

  • 10 FAQs: Medicare’s Role in End-of-Life Care

    Fact Sheet

    About eight of 10 of the 2.6 million people who died in the US in 2014 were people on Medicare, making Medicare the largest insurer of health care provided during the last year of life. These Frequently Asked Questions explain Medicare’s role in or coverage of end-of-life care, advance care planning, advance directives, and hospice care. They also provide information on Medicare spending on end-of-life care, changes to the physician fee schedule, and how related issues arose…

  • ACA Mandate Repeal May Be Less Popular Than GOP Thinks

    From Drew Altman

    In this Axios column, Drew Altman discusses how public opinion seems to flip on eliminating the individual mandate as part of the tax legislation, from for it to against, when the public considers the consequences.

  • Poll: Public Says Drug Companies Have More Influence in Washington than the NRA

    News Release

    Democrats Split on Whether to Fix the ACA or Push for a National Health Plan; Few Democratic Voters Say a National Health Plan is Their Top Issue for the Midterms As policymakers weigh strategies to address the high cost of prescription drugs, the latest Kaiser Health Tracking Poll finds that a large majority of the public (72%) view pharmaceutical companies as having too much influence in Washington – more than say the same about the…

  • Analysis: Individual Market Insurers Experienced Their Best Financial Year under the ACA in 2017, Though Subsequent Political and Policy Changes Complicate the Outlook for Future Years

    News Release

    Insurers in 2017 had their best financial year selling individual market health insurance since the Affordable Care Act began requiring guaranteed access to coverage for people with pre-existing conditions in 2014, though recent political and policy changes create new challenges for insurers trying to succeed in this market, new Kaiser Family Foundation analysis finds. This analysis finds insurers posted their strongest performance in the individual market using two different financial indicators: The average share of…

  • Medicaid Expansion Waivers: What Will We Learn?

    Issue Brief

    Section 1115 waivers authorize research and demonstration projects that, in the view of the Health and Human Services (HHS) Secretary, further the purposes of the Medicaid program. The ACA implemented new requirements for these waivers, including that states must have a publicly available, approved evaluation strategy. This brief examines some of the major research questions and hypotheses relevant to the federal and state evaluations of Medicaid expansion Section 1115 waivers and explores key challenges that…