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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  • Medicaid Enrollment Under the Affordable Care Act: Understanding the Numbers

    Issue Brief

    This issue brief walks through data recently released from Health and Human Services (HHS) and what it can and cannot tell us about the number of people that have applied for Medicaid since open enrollment for health insurance marketplaces began, how many have enrolled, and what the role of the ACA is in recent Medicaid coverage gains.

  • All Eyes on the Supreme Court: More than Birth Control at Stake

    Issue Brief

    On March 25th, the Supreme Court will hear two cases brought by for-profit corporations challenging the ACA’s contraceptive coverage rule on religious grounds. These two corporations are Hobby Lobby, a national chain of craft stores owned by a Christian family and Conestoga Wood Specialties, a cabinet manufacturer, owned by a Mennonite family. Beyond the impact on the ACA and contraceptive coverage, the Court’s decision may have implications for religious rights of employers and employees, as…

  • A Profile of Community Health Center Patients: Implications for Policy

    Issue Brief

    Community health centers are a key source of primary care in underserved areas. Their role will grow as coverage expands under the ACA. To sharpen understanding of the health center patient population, this brief compares them to the low-income population overall, using the Health Center Patient Survey and National Health Interview Survey. The pre-ACA profile of health center patients that emerges sets the stage for measuring change and highlights important implications of states’ Medicaid expansion…

  • How Will the Uninsured in the District of Columbia Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in District of Columbia, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in District of Columbia are eligible for Medicaid…

  • How Will the Uninsured in Mississippi Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Mississippi, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Mississippi are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Nevada Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Nevada, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Nevada are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Pennsylvania Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Pennsylvania, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Pennsylvania are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in South Carolina Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in South Carolina, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in South Carolina are eligible for Medicaid or financial…

  • How Will the Uninsured in Utah Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Utah, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Utah are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Washington Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Washington, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Washington are eligible for Medicaid or financial assistance in…