Medicare for All is a proposal to replace nearly all public and private health insurance in the United States with a single federal program that would cover every resident for medically necessary care, with no premiums, copays, or deductibles at the point of service. Championed by Senator Bernie Sanders and Representative Pramila Jayapal, it was reintroduced in April 2025 and has more than a hundred cosponsors in the House, but with Republicans controlling both chambers of Congress it is not expected to advance.
What the Program Would Cover
Every U.S. resident would be enrolled in one public insurance plan, replacing employer-sponsored coverage, individual market policies, the current Medicare program, Medicaid, and other programs. Covered services would include doctor visits, hospital stays, preventive care, mental health, reproductive health, dental, vision, prescription drugs, and long-term care.1Physicians for a National Health Program. What Is Single Payer Premiums, copays, and deductibles would be eliminated.
The most recent bills include phase-in periods. The House version in the 116th Congress (H.R. 1384) proposed a two-year transition, and the Senate version (S. 1129) proposed four years, with eligibility expanding by age group and a Medicare buy-in available during the transition. Both versions set aside one percent of total program spending for up to five years to assist workers displaced from the private insurance industry.
What Happens to Private Insurance
This is the piece that changes many people’s answer when they hear it. Private insurers would be prohibited from selling coverage that duplicates the benefits provided by the public plan.2KFF. What’s the Role of Private Health Insurance Today and Under Medicare for All A limited market for supplemental insurance could remain for services outside the public plan’s scope, such as experimental treatments or luxury amenities.3Health Affairs. Medicare for All Policy Proposals The industry that covers roughly 250 million Americans and generates about $1 trillion in annual revenue would effectively cease to exist in its current form.4The New York Times. Private Health Insurance Medicare for All
Employer-sponsored coverage would end as well. Under current M4A bills, the plan you get through work would be replaced by the federal program, not supplemented by it. Union-negotiated health benefits are one reason organized labor’s position on the proposal is not uniform, as discussed below.
How It Differs From a Public Option
The two are often conflated in political conversation, but they are structurally different. Medicare for All is single-payer: one federal program replaces existing public and private coverage for covered services. A public option would add a government-run plan to the existing marketplace and leave private insurance, employer coverage, current Medicare, and Medicaid intact.5KFF. Side-by-Side Comparison Medicare for All and Public Plan Proposals
Under a public option, individuals would choose between keeping their current plan or enrolling in the government program. Premiums would still exist, and private insurers would continue operating. Supporters of full M4A argue that keeping private insurers preserves administrative waste and lets insurers cherry-pick healthier enrollees, potentially destabilizing the public plan.6Public Citizen. Why Medicare for All Not a Public Option Is the Best Solution Supporters of a public option counter that it preserves consumer choice without eliminating the private insurance industry.
What It Would Cost
How much Medicare for All would cost, and whether it would save money overall, is one of the most contested questions in the debate. Answers depend heavily on assumptions about provider payment rates, administrative savings, drug pricing, and how much additional care people would use once financial barriers are removed.
A 2018 analysis by Charles Blahous at the Mercatus Center estimated M4A would increase federal spending by roughly $32.6 trillion over ten years (2022–2031), assuming provider payments set at Medicare rates and significant administrative savings. Without those lower payment rates, the figure rose to $38 trillion.7Mercatus Center. The Costs of a National Single-Payer Healthcare System The Urban Institute projected a similar $32 trillion increase in federal spending from 2017 to 2026. The Congressional Budget Office’s most comparable single-payer scenario, which included comprehensive long-term care, estimated $3 trillion in new federal costs in 2030 alone. The CBO’s figures were lower than the Mercatus estimates partly because CBO projected that health care supply would not keep pace with demand, leading to some rationing.8Mercatus Center. Understanding CBOs Medicare for All Cost Estimates
A 2018 study from the Political Economy Research Institute at the University of Massachusetts Amherst reached the opposite conclusion on total national spending. It found M4A could reduce total national health spending by about 9.6 percent, from $3.24 trillion to $2.93 trillion, through administrative restructuring, pharmaceutical price reductions, uniform payment rates, and fraud reduction.9PERI. Economic Analysis of Medicare for All The study estimated cumulative savings of $5.1 trillion over ten years, while acknowledging that universal coverage would increase demand for care by roughly 12 percent.10PERI. Economic Analysis of Medicare for All Full Report
How It Would Be Paid For
Senator Sanders has published a menu of financing options rather than a single blueprint. The largest revenue sources include a 7.5 percent employer payroll tax (exempting the first $2 million in payroll), projected to raise $3.9 trillion over ten years, and a 4 percent household income-based premium (exempting families of four earning under $29,000), projected to raise $3.5 trillion. Other proposed revenue streams include progressive income tax increases, a wealth tax on the top 0.1 percent of households, estate tax reform, and eliminating the tax exclusion for employer-paid premiums, which is worth an estimated $4.2 trillion over a decade.11Office of Sen. Bernie Sanders. Options to Finance Medicare for All
The Committee for a Responsible Federal Budget has estimated that taxing high earners, corporations, and the financial sector together might cover roughly 35 percent of the $30 trillion cost, meaning the remaining burden would fall on broader-based taxes such as payroll levies or a value-added tax.12CRFB. Choices for Financing Medicare for All
Where the Bill Stands Now
On April 29, 2025, Sanders reintroduced the Medicare for All Act in the Senate as S. 1506, and Jayapal and Representative Debbie Dingell introduced the House companion as H.R. 3069.13Congress.gov. S.1506 Medicare for All Act14Congress.gov. H.R.3069 Medicare for All Act The Senate bill has 17 cosponsors, all Democrats, including Elizabeth Warren, Cory Booker, Kirsten Gillibrand, Adam Schiff, and Alex Padilla.15Congress.gov. S.1506 Cosponsors The House version has 102 cosponsors.16Office of Rep. Pramila Jayapal. Jayapal Sanders Dingell Introduce Medicare for All
The Congressional Progressive Caucus has formally identified the bill as a caucus priority, with CPC Chair Greg Casar calling it a plan to “transform our corrupt, profit-driven health system.”17Congressional Progressive Caucus. Progressives Lay Out Vision for Medicare for All Supporting organizations include National Nurses United, the UAW, Public Citizen, the American Postal Workers Union, and Progressive Democrats of America.18Office of Sen. Alex Padilla. Padilla Joins Sanders and Over 100 Lawmakers in Reintroduction of Medicare for All With Republicans holding majorities in both chambers, the bill is not expected to advance to a vote.
What the Public Thinks
Polling on Medicare for All is a study in how framing shapes answers. Since 2016, a slight majority of Americans have generally reported favoring a national Medicare-for-All plan.19KFF. Public Opinion on Single Payer National Health Plans A November 2025 Data for Progress survey found 65 percent of likely voters supported M4A when it was described as a national health insurance program covering all Americans and replacing most private insurance, including 78 percent of Democrats, 71 percent of independents, and 49 percent of Republicans.20Data for Progress. Medicare for All Is Popular Even When Put Up Against Attacks When told the policy would eliminate most private insurance and replace premiums with higher taxes while guaranteeing coverage, 63 percent still supported it. After hearing arguments from both sides, 58 percent maintained their support.
KFF has found sharper drops depending on how the question is framed. Support falls to 37 percent when respondents are told the proposal would eliminate private insurance, and KFF’s polling has found that many supporters falsely assume they would keep their current coverage under a single-payer plan.19KFF. Public Opinion on Single Payer National Health Plans A December 2025 Pew Research Center survey found that 66 percent of U.S. adults believe the federal government has a responsibility to ensure health care coverage for all, but only 35 percent specifically favor a single national government program. The partisan gap is wide: 52 percent of Democrats support a single government program, compared with 17 percent of Republicans.21Pew Research Center. Most Americans Say Government Has a Responsibility to Ensure Health Care Coverage
Who Opposes It
The health care industry has treated Medicare for All as an existential threat. In 2018, a coalition called the Partnership for America’s Health Care Future brought together America’s Health Insurance Plans, the Blue Cross Blue Shield Association, the Pharmaceutical Research and Manufacturers of America, the Federation of American Hospitals, and other groups to coordinate opposition.22Politico. Medicare for All Lobbying The American Medical Association initially participated but left the coalition in 2019.
Coalition members collectively spent $143 million on lobbying in 2018.23OpenSecrets. Big Pharma Insurers Hospitals Team Up to Kill Medicare for All The Partnership’s messaging emphasized higher costs, reduced choice, longer wait times, and a “one-size-fits-all” system. An analysis of the coalition’s advertising on Meta platforms from 2018 to 2021 identified 1,675 paid ads, with total spending between roughly $843,000 and $1.17 million on those platforms alone. The most common claim, appearing in 59 percent of the ads, was that government-run health care would be more expensive.24PMC. PAHCF Advertising Analysis
The Labor Movement Is Divided
Organized labor’s stance is more complicated than it looks. The AFL-CIO has described movement toward a single-payer system as a “longstanding goal,” with the caveat that any such system must not diminish existing union-negotiated health benefits and must allow worker health plans to continue administering core benefits.25AFL-CIO. Resolution 6 Making Health Care for All a Reality
National Nurses United has been among the most aggressive advocates, and the American Federation of Teachers, SEIU, and the Association of Flight Attendants have backed the policy as well. But unions whose members bargained hard for premium health coverage often see M4A as a threat. The Culinary Workers Union in Nevada, representing 60,000 members, publicly criticized Sanders’s plan during the 2020 primary as a danger to its negotiated benefits. The New York State Building and Construction Trades Council partnered with private insurers to oppose single-payer legislation at the state level, and the International Association of Fire Fighters expressed distrust of a government-run alternative to their current coverage.26Politico. Medicare for All Labor Union The split often runs along a national-versus-local axis, with national unions passing supportive resolutions while their locals organize against the policy.27In These Times. Labor Unions New York Medicare for All
Why States Haven’t Done It Themselves
Several states have attempted to enact single-payer systems on their own. Every attempt has failed, and the reasons matter for evaluating the federal proposal.
Vermont came closest. Governor Peter Shumlin signed Green Mountain Care into law in 2011, then abandoned it in late 2014 after analysts determined it would cost $4.3 billion in its first year, requiring an 11.5 percent payroll tax and a 9.5 percent income tax, a 151 percent increase in state tax revenue.28Third Way. Single Payer Health Care a Tale of 3 States Colorado voters rejected a single-payer ballot measure in 2016 by a 79-to-21 margin, wary of a $25 billion first-year tax increase. Massachusetts has seen single-payer bills introduced for three decades without any advancing out of committee.
California’s experience has been especially instructive. In January 2022, Assemblymember Ash Kalra pulled AB 1400, the CalCare bill, from a floor vote after concluding he was short by double digits of the 41 votes needed for passage. The proposal carried an estimated price tag of $314 billion to $391 billion per year.29Politico. Californias Single Payer Bill Dies The California Nurses Association, which had sponsored the bill, condemned Kalra for providing “cover” to lawmakers who could avoid a recorded no vote. Governor Gavin Newsom, who had campaigned on universal health care, stayed uninvolved. A follow-up bill, AB 2200, was introduced in 2024 but also failed to advance.30CalMatters. California Single Payer Legislature In New York, the New York Health Act has been introduced repeatedly, most recently in 2023, but has not passed either chamber.31NYSNA. Single Payer System for New York State
Where the Politics Are Headed
Medicare for All was the defining domestic policy question of the 2020 Democratic presidential primary. Sanders ran on a fully government-run system that would end employer-provided insurance. Warren co-sponsored his Senate bill and initially embraced it, then released a phased transition plan that would have passed a Medicare-for-All public option in her first 100 days and legislation to eliminate private insurance by her third year in office.32CNBC. Warren Medicare for All Plans to Factor in 2020 Democratic Debate
Joe Biden, who won the nomination, campaigned on defending and expanding the Affordable Care Act with a public option, calling it the “quickest, fastest way” to expand coverage. Pete Buttigieg promoted “Medicare for all who want it.” Amy Klobuchar rejected M4A outright. Michael Bennet warned that making private insurance illegal was politically untenable. John Hickenlooper cautioned that eliminating private insurance for 180 million people would hand Republicans an easy “socialist” attack.33Time. 2020 Democratic Candidates Health Care
Biden’s nomination was widely read as a victory for the incremental approach, and the 2024 Democratic Party platform made no mention of Medicare for All, focusing instead on defending existing coverage and lowering prescription drug costs.34The American Presidency Project. 2024 Democratic Party Platform The bills continue to be reintroduced with over a hundred House cosponsors, but the proposal now functions more as a statement of long-term progressive goals than an active legislative fight. Analysis of the 2018 midterms by Data for Progress found that endorsing M4A had no measurable effect on a candidate’s vote share, and concluded that claims of electoral harm from supporting the policy were “incredibly tenuous.”35Data for Progress. The Effect of Supporting Medicare for All on Congressional Outcomes Even so, the near-term political landscape offers no path to passage.