ACA Affordable Care Act Statistics in US 2026 | Subsidy Expiry, Uninsured, Costs & Key Health Facts

ACA Affordable Care Act in 2026

The Affordable Care Act (ACA) is navigating its most turbulent year since its passage in 2010. The single most consequential policy shift of 2026 is the expiration of enhanced premium tax credits (PTCs) that had been in place since the American Rescue Plan of 2021 and extended through the Inflation Reduction Act of 2022. When those enhancements expired at the end of 2025, the ACA marketplace entered a new era — one defined by sharply higher premiums, record deductible increases, declining enrollment, and a rising tide of Americans dropping coverage entirely. At the same time, the “One Big Beautiful Bill Act” (OBBBA), signed into law in July 2025, introduced sweeping new Medicaid restrictions and marketplace enrollment barriers that compound the subsidy expiry’s impact. Together, these two forces represent the most significant rollback of ACA coverage gains since the law’s founding.

Understanding the ACA statistics in 2026 means reckoning with a system that, on paper, enrolled 23.1 million people during the open enrollment period — down from 24.3 million the prior year — but whose actual effectuated enrollment is projected by KFF to fall to as low as 17.5 million people once non-payers drop off mid-year. It means understanding that 9% of all 2025 marketplace enrollees are now uninsured. It means seeing deductibles that have risen to a record $3,786 per person — a 37% jump in a single year. The ACA remains the backbone of health coverage for millions of Americans, but 2026 marks a genuine inflection point in its history.

Interesting Facts: ACA Affordable Care Act in the US 2026

KEY ACA FACTS AT A GLANCE — 2026
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  2026 Open Enrollment sign-ups       ████████████████████████    23.1 million
  Projected effectuated enrollment    ████████████████            17.5 million
  Uninsured (under 65) — 2024         ████████████████████████    26.7 million
  CBO projected new uninsured (2026)  ████                         2.2–3.8 million
  Avg. monthly premium (2026)         ██                           $178/month
  Avg. deductible (2026 record)       ███                          $3,786/person
  1 in 10 prior ACA enrollees now uninsured in 2026

═══════════════════════════════════════════════════════════════════════

Source: KFF (kff.org, May 2026); CMS (cms.gov); Congressional Budget Office (CBO); Urban Institute / Commonwealth Fund; CBPP; KFF Health News; CNBC (March 2026)

The facts above reflect a health insurance system in genuine transition. For much of the period between 2021 and 2025, the enhanced premium tax credits served as the engine of ACA enrollment growth — they eliminated the notorious “subsidy cliff” for people earning over 400% of the federal poverty level, kept premiums low enough for 80% of HealthCare.gov consumers to find a plan for $10 or less per month, and helped drive total marketplace enrollment from roughly 11 million to over 24 million in just five years. The expiration of those enhancements in December 2025 — without congressional action to extend them — has reversed years of progress in a single open enrollment cycle.

The impact extends far beyond the marketplace itself. The One Big Beautiful Bill Act of 2025, signed into law on July 4, 2025, compounds the subsidy problem by cutting nearly $1 trillion in federal Medicaid spending, imposing new work requirements for Medicaid expansion enrollees starting in late 2026, requiring twice-yearly eligibility redeterminations, and eliminating the tools — like automatic re-enrollment and provisional eligibility — that helped millions of low-income Americans stay covered. The CBO estimates these combined changes will cause 10.5 million people to lose Medicaid and CHIP coverage by 2034, and that approximately 16 million total Americans could become uninsured across all ACA-related programs combined.

ACA Marketplace Enrollment Statistics in the US 2026

ACA MARKETPLACE PLAN SIGN-UPS — HISTORICAL TREND (OPEN ENROLLMENT)
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  2021   ████████████              11.3 million
  2022   ████████████████          13.8 million
  2023   ████████████████████      16.3 million
  2024   ████████████████████████  21.4 million
  2025   ████████████████████████  24.3 million  ← Record high
  2026   ██████████████████████    23.1 million  ← Sharpest drop ever
  Projected effectuated 2026: ~17.5 million
═══════════════════════════════════════════════════════════════════════

Source: CMS Open Enrollment reports (cms.gov); KFF Marketplace Enrollment analysis (kff.org, May 2026); Wakely Consulting Group estimates; CBO

The ACA marketplace enrollment numbers in 2026 mark a historic reversal. During the open enrollment period, 23.1 million people selected marketplace plans — a decline of 1.2 million from 2025’s record of 24.3 million, and the single sharpest year-over-year drop in marketplace history. But open enrollment sign-ups are not the same as effectuated enrollment — meaning people who actually paid their first premium and activated coverage. KFF’s analysis of early data from CMS and state-based marketplace reports, combined with estimates from Wakely Consulting Group, projects that effectuated enrollment will fall to approximately 17.5 million people in 2026 — a 21.5% decline from 22.3 million in 2025. This aligns closely with the Congressional Budget Office’s previous projection of roughly a 25% marketplace contraction following enhanced PTC expiry, which modeled average monthly enrollment of just 16.9 million for 2026.

The driving force is entirely financial. Approximately 86% of January 2026 enrollees paid their first month’s premium, but the remaining 14% — who never paid — represent early non-activations. Among the 9% of 2025 enrollees who dropped coverage altogether, a KFF survey found that 7 in 10 said the cost was a “major reason.” Another 28% switched to a different — typically cheaper — plan, with cost as the primary driver. The result is a massive enrollment shift from silver plans (which had cost-sharing reductions for lower-income enrollees under the enhanced PTC structure) toward high-deductible bronze plans, which has driven average deductibles to record highs even for people who stayed enrolled.

ACA Premium & Cost Statistics in the US 2026

AVERAGE ACA MONTHLY PREMIUMS AFTER CREDITS — TREND
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  2021 (pre-ARP enhancement)   ████████████████     ~$117/month
  2022–2025 (enhanced PTCs)    ██                   ~$60–$113/month  ← Subsidized era
  2026 (enhanced PTCs expired) ████████████████████  $178/month  ← +58%
═══════════════════════════════════════════════════════════════════════
  Average deductible 2025: $2,759   →   2026: $3,786 (+$1,027 / +37%)
═══════════════════════════════════════════════════════════════════════

Source: KFF ACA Marketplace Enrollment & Premium analysis (kff.org, May 2026); AJMC (May 2026); CNBC (March 2026); MoneyGeek premium analysis (March 2026); CMS 2026 Open Enrollment data

The ACA premium and cost statistics for 2026 are unlike anything seen since the marketplaces opened. Average monthly premium payments for ACA enrollees jumped 58% — from $113 to $178 — in a single year. This increase was actually smaller than the 114% average premium spike that KFF had projected before open enrollment, for a specific reason: many high-premium enrollees left the market entirely, and those who stayed disproportionately shifted to cheaper bronze plans. This “adverse selection” dynamic means the average increase understates the true cost burden for those who kept the same coverage. A family of four earning $85,000 a year, for instance, faced a required premium contribution jumping from 4.88% to 8.5% of household income in a single year.

The deductible story is equally stark. Average ACA marketplace deductibles reached a record $3,786 in 2026 — the result of a $1,027 per-person jump in just one year, and the steepest single-year deductible increase ever documented in this market. This is almost entirely driven by plan-mix changes: as consumers shifted to bronze plans to reduce their monthly premiums, they accepted far higher out-of-pocket costs when they actually need care. The consequence is that 73% of returning ACA enrollees report worrying about being able to afford emergency care or hospitalization costs in 2026 — and 55% have already cut back or plan to cut spending on food or other basic household items to keep their coverage. For the 9% of 2025 enrollees who dropped coverage entirely, the math simply didn’t work.

ACA Enhanced Subsidy Expiry Impact in the US 2026

PROJECTED COVERAGE LOSS FROM ACA SUBSIDY EXPIRY — KEY ESTIMATES
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  CBO (2.2M in 2026 only)           ████                  2.2 million
  CBO (3.8M/yr avg. 2026–2034)      ████████              3.8 million/yr
  Urban Institute / Commonwealth    ████████████          4.8 million
  Commonwealth Fund                 ████████████          4 million
  Economic Security Project         ████████████          4.2 million
  Jobs lost nationally (CWF est.)   ████████████████████  340,000
═══════════════════════════════════════════════════════════════════════

Source: Congressional Budget Office (CBO, Dec 2024); Commonwealth Fund (Oct 2025); Urban Institute (Sept 2025); KFF (2025–2026); Economic Security Project; CNBC (March 2026); CBPP

The expiration of enhanced ACA subsidies at the end of 2025 represents the largest single policy-driven loss of health coverage since the ACA was passed. The range of projections — from CBO’s relatively conservative estimate of 2.2 million newly uninsured in 2026 to the Urban Institute’s 4.8 million — all point in the same direction: millions of Americans lost or are at risk of losing affordable coverage because Congress did not act. The AHA, AMA, and more than 90 physician organizations had urged Congress to extend the credits. Congressional Republicans and the White House preferred a separate legislative track that has so far stalled in the Senate.

The economic fallout extends well beyond health outcomes. The Commonwealth Fund projected that allowing the credits to expire would cost 340,000 jobs nationally in 2026 — with Texas and Florida bearing the brunt precisely because those states have the largest ACA enrollment growth in recent years and have not expanded Medicaid, leaving populations with fewer coverage alternatives. $40.7 billion in lost state GDP and $2.5 billion in reduced state and local tax revenues are the price tag of inaction. Three states — California, New Mexico, and Maryland — have moved to implement state-funded subsidies to partially offset the federal loss, but the vast majority of states have no comparable safety net, leaving middle-income enrollees exposed to the full force of the premium increase.

ACA Uninsured Americans Statistics in the US 2026

US UNINSURED POPULATION TREND (NON-ELDERLY, UNDER 65)
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  2010 (pre-ACA)     ████████████████████████████████████  48.2 million
  2016 (ACA low)     ████████████████████                  28.2 million
  2019               ████████████████████                  29.9 million
  2023               ████████████████████                  25.3 million
  2024               ████████████████████                  26.7 million  ← up 1.3M
  2026 (projected)   █████████████████████                 ~28.5–31.5M est.
═══════════════════════════════════════════════════════════════════════

Source: KFF Key Facts About the Uninsured Population (kff.org, April 2026); CDC National Health Interview Survey (NHIS 2024); ACS 2024; HHS ASPE; SHADAC (2026)

The uninsured population in the US had been declining consistently since the ACA’s major coverage provisions took effect in 2013 — falling from 48.2 million in 2010 to a record low of 25.3 million in 2023. But that trend has now reversed. The 26.7 million uninsured under age 65 in 2024 — an increase of 1.3 million from 2023 and the first year-over-year increase since 2019 — reflects the impact of Medicaid unwinding (the end of continuous enrollment protections put in place during COVID-19), during which 25.2 million people were disenrolled from Medicaid nationally. Many of those individuals did not successfully transition to ACA marketplace plans or employer coverage.

The 2026 situation is more serious still. Based on the 9% of 2025 ACA enrollees who have already become uninsured, combined with the CBO and Urban Institute projections, the actual number of uninsured Americans under 65 could approach or exceed 29–31 million by mid-2026 once non-payment drop-offs from the marketplace are fully accounted for. The disparities are significant: Hispanic Americans face an uninsured rate of 24.6% — nearly two and a half times the overall rate — and young adults (19–25) carry the highest uninsured rate of any age group at approximately 11%, compounded by the OBBBA’s elimination of enhanced federal funding for new Medicaid expansion states, which would have been a key pathway for coverage for low-income young adults.

ACA Medicaid & One Big Beautiful Bill Act Statistics in the US 2026

ONE BIG BEAUTIFUL BILL ACT (OBBBA) — HEALTH COVERAGE IMPACT
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  Federal Medicaid/CHIP cuts over 10 yrs   ████████████████████████████  ~$1 trillion
  People removed from Medicaid by 2034     ████████████████████          10.5 million
  Work requirements apply to (est.)        ████████████████████████████  18.5 million adults
  Total potentially uninsured by 2034      ████████████████████████████  ~16 million
  Marketplace subsidy cuts over 10 yrs     ████████                      $131.8 billion
═══════════════════════════════════════════════════════════════════════

Source: CBO; American Medical Association (ama-assn.org); Center for American Progress; CBPP; Georgetown CCF; KFF Medicaid Tracker (March 2026); AMA advocacy letters (2025–2026); One Big Beautiful Bill Act (Public Law 119-21, July 4, 2025)

The One Big Beautiful Bill Act, signed on July 4, 2025, marks the most significant structural change to Medicaid and the ACA marketplace since the law was passed. The CBO-confirmed ~$1 trillion in federal Medicaid and CHIP cuts over 10 years is not an abstract budgetary figure — it translates directly into 10.5 million people losing Medicaid or CHIP coverage by 2034. The mechanics are multiple and mutually reinforcing: work requirements for Medicaid expansion adults starting in late 2026, twice-yearly eligibility redeterminations instead of annual checks, the elimination of automatic re-enrollment and provisional eligibility tools, and the removal of enhanced federal matching funds for any new state seeking to expand Medicaid for the first time — all create new layers of procedural barriers that research consistently shows cause eligible people to lose coverage through administrative churn rather than actual ineligibility.

The current Medicaid enrollment of approximately 70.51 million people and 7.24 million in CHIP represents the broadest coverage of low-income Americans in US history — a direct product of the ACA’s expansion of Medicaid eligibility to adults earning up to 138% of the federal poverty level. As of March 2026, 41 states plus DC have adopted that expansion. The OBBBA eliminates the incentive for the remaining 10 non-expansion states to ever join, locking in a permanent “coverage gap” where roughly 1.4 million working-age adults earn too much for pre-expansion Medicaid but too little to afford marketplace coverage. The AMA, representing physicians who will treat these uninsured patients, expressed “outrage” at the OBBBA’s passage and warned that the combined impact — Medicaid cuts plus ACA subsidy expiry — could leave up to 14–16 million more Americans uninsured by the mid-2030s.

ACA Marketplace by State & Demographic Statistics in the US 2026

ACA COVERAGE IMPACT BY GROUP — 2026
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  Uninsured rate — Hispanic Americans     ████████████████████████  24.6%
  Uninsured rate — Men overall            █████████████             13.0%
  Uninsured rate — Women overall          ██████████                10.1%
  Young adults (19–25) uninsured rate     ███████████               ~11%
  ACA enrollees on subsidies (2026)       ████████████████████████████████████  87%
  States without Medicaid expansion       █████                     10 states
  States adding own subsidies (2026)      ██                        3 states
═══════════════════════════════════════════════════════════════════════

Source: KFF State Health Facts and Medicaid Expansion Tracker (kff.org, March 2026); CDC NHIS 2024; Commonwealth Fund (October 2025); SHADAC 15-Year ACA Report (2026); KFF survey (Feb–Mar 2026)

The state and demographic dimensions of ACA coverage in 2026 reveal how unevenly the burden of subsidy expiry falls across the country. Southern states — many of which refused Medicaid expansion and lack state reinsurance programs — face the harshest combination of high premium increases and the fewest coverage alternatives. Texas and Florida, the two states projected to lose the most healthcare jobs from subsidy expiry (83,400 and 57,500 respectively), are also among the top ACA enrollment states and among the 10 that still have not expanded Medicaid. This creates a structural trap: low-income workers in these states who fell in the “coverage gap” had no Medicaid pathway, and now middle-income workers who relied on enhanced marketplace subsidies face premium increases of up to 29% just at the gross premium level.

The racial and demographic disparities are just as pronounced. Hispanic Americans carry an uninsured rate of 24.6% — more than double the overall rate — driven by a combination of income levels, immigration status restrictions on Medicaid and marketplace eligibility, and geographic concentration in non-expansion states. Young adults aged 19–25 face the highest uninsured rate of any age group at roughly 11%, and the OBBBA’s elimination of incentives for new Medicaid expansion states specifically locks out a key coverage pathway for low-income young adults in the remaining non-expansion states. Meanwhile, states that have invested in their own coverage infrastructure — California, Kentucky, Michigan, Oregon, and Rhode Island — have each cut their uninsured rates by 60% or more since the ACA’s 2013 implementation, demonstrating what committed state-level action can achieve even within a national system under pressure.

Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.

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