Estimates for universal healthcare in the United States range from net savings on total national health spending to trillions of dollars in new federal expenditures, depending almost entirely on how the system is designed and what assumptions underpin the math. The U.S. already spends far more per person on healthcare than any other wealthy nation, so the question is less about whether the country can afford to cover everyone and more about whether the money already flowing through the system can be redirected efficiently enough to close the gap.
What the U.S. Already Spends Compared to Peer Nations
Any conversation about the cost of universal coverage has to start with the fact that American healthcare spending is, by international standards, an outlier. The gap is not new. As far back as 1980, the United States was already the highest-spending country in the Organisation for Economic Co-operation and Development, at $1,064 per person when the OECD average was just $604. By 1990, U.S. spending had ballooned to $2,566 per person while the OECD average sat at $1,204.1PubMed Central. U.S. health expenditure performance: An international comparison and data update – Section: Expenditure performance in 24 countries That trajectory has only steepened. Current U.S. health spending exceeds $4.5 trillion a year, or roughly $13,000 per person, a figure that dwarfs what countries like Germany, France, or Canada spend while covering all of their residents.
This context matters because it reframes the cost debate. Countries with universal systems do not spend more than the U.S. They consistently spend less, often dramatically less, while achieving comparable or better health outcomes on measures like life expectancy and infant mortality. The relevant question, then, is not “can the richest country in the world afford to insure its people?” It clearly can, because it is already spending more than enough money. The question is whether restructuring how that money is collected and distributed would reduce total costs, increase them, or leave them roughly unchanged.
What Formal Economic Analyses Have Projected
Researchers have studied the projected costs of single-payer healthcare financing in the United States through multiple formal economic analyses. A systematic review published in PLOS Medicine surveyed an expert panel and searched major databases for these studies, assembling the broadest collection of cost projections to date.2PLOS Medicine. Projected costs of single-payer healthcare financing in the United States: A systematic review of economic analyses The review found that the majority of economic analyses projected that a single-payer system would reduce total national health spending compared to the status quo, though a minority projected increases. The range of estimates was wide, and the direction of the projection depended heavily on a handful of design assumptions.
The biggest swing factors were administrative cost reductions, drug pricing, provider payment rates, and how much newly insured people would increase their use of care. Analyses that assumed aggressive cuts to administrative overhead and government negotiation of drug prices tended to project savings. Analyses that assumed generous provider reimbursement rates and large utilization spikes among newly covered populations tended to project net cost increases. In other words, universal healthcare does not have a single price tag. It has a range of plausible price tags, and where any given estimate falls depends on the specific policy choices baked into the model.
Administrative Overhead as the Largest Potential Savings
The single largest source of projected savings in most universal healthcare proposals is administrative cost reduction. The American system’s administrative burden is unique among wealthy nations, and the reason is structural. The U.S. healthcare market features multiple, loosely constrained payers, each executing individualized contracts with participating providers. Each provider, in turn, maintains contracts with multiple payers, each with its own billing codes, prior authorization requirements, formularies, and reimbursement schedules.3PubMed Central. Reducing administrative costs in US health care: Assessing single payer and its alternatives – Section: 2.1. Categorizing BIR costs
This complexity creates enormous overhead on both sides of every transaction. Hospitals and physician practices employ large billing and coding staffs to navigate the patchwork of payer rules. Insurance companies, in turn, employ claims processors, utilization reviewers, and customer service representatives. The result is that a significant share of every healthcare dollar goes not to clinical care but to the bureaucratic machinery of billing, adjudicating, and collecting payment.
In countries with single-payer systems, providers submit claims to one entity with one set of rules. The billing staff requirements shrink. The insurer side shrinks even more dramatically because there is no need for marketing departments, no competitive enrollment infrastructure, and far less claims adjudication complexity. Estimates of how much the U.S. could save by moving to a simplified payment system vary, but the range is consistently in the hundreds of billions of dollars per year. Even proposals that stop short of full single-payer and instead standardize billing across multiple insurers project substantial, if smaller, savings from administrative simplification.
The challenge is that administrative savings are easier to project on paper than to realize in practice. Hundreds of thousands of jobs in the insurance and billing industries would be affected, and the transition costs of moving from a multi-payer to a single-payer infrastructure are difficult to estimate. Still, the gap between U.S. administrative spending and that of peer nations is so large that even partial progress toward simplification would free up significant resources.
The Utilization Question
One of the reliable cost-increasing factors in any universal coverage proposal is that people who gain insurance use more healthcare. This is not speculative; it has been observed every time coverage has expanded in the U.S. When the Affordable Care Act’s Medicaid expansion extended coverage to new populations, researchers documented significant jumps in healthcare use. Among adults with disabilities who became newly eligible for Medicaid, expansion was associated with a 35.9 percentage-point increase in full-year Medicaid coverage, a 15.5 percentage-point increase in receipt of primary care, and a 19.2 percentage-point increase in flu vaccinations, along with a $457 drop in out-of-pocket spending per person.4Health Services Research. Effects of Medicaid expansion on insurance coverage and health services use among adults with disabilities newly eligible for Medicaid
That pattern, more coverage leading to more doctor visits, more preventive care, more prescriptions, would almost certainly repeat on a much larger scale under universal healthcare. Roughly 25 to 30 million Americans are currently uninsured, and tens of millions more are underinsured with high deductibles that discourage them from seeking care. When those financial barriers vanish, the system absorbs a wave of deferred care: chronic conditions that went unmanaged, screenings that were skipped, surgeries that were postponed.
How expensive this utilization spike would be in the long run is genuinely uncertain. In the short term, costs rise as pent-up demand floods the system. Over longer time horizons, the economics get murkier. People who receive preventive care and manage chronic conditions early tend to avoid costly emergency interventions and hospitalizations later. Whether those downstream savings offset the upfront costs of broader access is one of the most debated questions in health economics, and the honest answer is that it depends on how effectively the system invests in primary and preventive care rather than simply paying for more of the same fragmented, acute-care-focused medicine the U.S. currently delivers.
Replacing Premiums with Taxes
Even in scenarios where total national health spending decreases under universal coverage, the federal budget would grow substantially because costs currently paid through private insurance premiums, employer contributions, and out-of-pocket spending would shift onto the government’s books. This is the source of much of the sticker shock in political debates: a proposal can simultaneously reduce total spending and require trillions in new federal revenue.
The financing question is where policy design meets political reality. Proposals have considered a wide menu of revenue sources: payroll taxes, income tax surcharges, wealth taxes, financial transaction taxes, and public premiums. Each option creates different winners and losers, and each interacts differently with the broader economy. Analysis from the Committee for a Responsible Federal Budget noted that while new taxes would largely replace existing premiums and out-of-pocket costs, most of the taxes considered, other than a public premium, would increase marginal tax rates, potentially discouraging work and investment and encouraging avoidance and evasion.5Committee for a Responsible Federal Budget. Choices for Financing Medicare for All
For most workers, the trade would be straightforward in principle: you stop paying insurance premiums and start paying higher taxes, ideally coming out ahead or roughly even. But the distribution would not be even across the population. People who currently get generous employer-sponsored insurance at low personal cost might see their tax bills rise more than their premium savings. People who currently buy insurance on the individual market or who are uninsured would likely come out well ahead. Small business owners who struggle to provide benefits would see a major burden lifted. The financing mechanism chosen would determine who benefits most and who pays more, which is why the “how much does it cost” question cannot be separated from the “who pays” question.
Why the Estimates Diverge So Dramatically
Casual observers are sometimes baffled by the range of cost projections, which can differ by trillions of dollars. The reason is that “universal healthcare” is not one policy. It is a family of policies with radically different design parameters, and the cost of each version hinges on a small number of assumptions that are genuinely uncertain.
Provider payment rates are perhaps the single most consequential variable. If a universal system paid hospitals and doctors at current Medicare rates, which are substantially lower than private insurance rates, total spending would drop. If it paid at current commercial insurance rates, spending would stay flat or rise. Many proposals split the difference, and even small adjustments in the assumed payment rate translate to hundreds of billions of dollars per year because provider payments make up the majority of all healthcare spending.
Drug pricing is another major variable. The U.S. pays far more for prescription drugs than other wealthy countries, partly because Medicare was historically barred from negotiating prices directly with manufacturers. Proposals that assume the government would use its bargaining power to bring drug prices closer to international levels project significant savings. Proposals that leave drug pricing roughly untouched do not.
Long-term care is a frequently overlooked variable. Some universal healthcare proposals include comprehensive long-term care coverage for the elderly and disabled, which would add substantially to costs. Others exclude it entirely. Whether dental, vision, and hearing benefits are included also swings the total. A bare-bones universal plan covering hospital and physician services would cost far less than a comprehensive plan covering essentially every health-related need.
These design choices interact with each other in complex ways. A plan with low provider payment rates might face provider shortages, leading to longer wait times, which could push wealthier patients toward a parallel private system, which would undermine the cost savings from consolidation. A plan with generous benefits but weak cost controls could see spending growth outstrip projections within a few years. The projections are not wrong for disagreeing with each other; they are answering different versions of the same question.
The Difference Between National Spending and Federal Spending
One of the most persistent sources of confusion in this debate is the failure to distinguish between total national health expenditures and federal government outlays. These are different numbers, and conflating them produces misleading headlines on both sides.
Total national health expenditure includes everything the country spends on healthcare: federal programs like Medicare and Medicaid, state spending, employer-sponsored insurance premiums, individual insurance premiums, and all out-of-pocket costs. Under universal coverage, total national spending might stay flat or decline while federal spending rises sharply, because the government is absorbing costs previously borne by the private sector. A critic can truthfully say “this plan adds $30 trillion to the federal budget over ten years” while a supporter can truthfully say “this plan saves $2 trillion in total health spending over the same period,” and both can be describing the same proposal.
When you see a cost estimate, the first question to ask is: cost to whom? If it refers to federal spending, it looks enormous because it is capturing spending that currently happens off the government’s books. If it refers to total national spending, the number tends to be closer to current spending or even below it, because administrative savings and price reductions partially or fully offset the cost of covering more people. Neither framing is dishonest, but each tells only half the story, and advocates on both sides routinely choose whichever half supports their argument.
What Other Countries Actually Pay for Their Systems
The U.S. has been the most expensive healthcare system in the OECD for decades, and the gap keeps widening. Back in 1980, the U.S. was spending roughly 75 percent more per person than the OECD average. By 1990, that gap had grown: the U.S. was spending more than double the average.1PubMed Central. U.S. health expenditure performance: An international comparison and data update – Section: Expenditure performance in 24 countries Today, the U.S. spends roughly twice what comparable nations spend per capita while still leaving millions uninsured, a combination no other wealthy country replicates.
Countries with universal systems achieve coverage through a variety of structures. Canada and the United Kingdom use single-payer or national health service models. Germany, France, and the Netherlands use regulated multi-payer systems with mandatory enrollment and standardized benefit packages. Japan, Australia, and Switzerland each have their own variations. None of them spend as much as the U.S., and all of them cover their entire populations. The variety of international models is worth noting because the American debate often treats universal healthcare as synonymous with a single-payer system, when in fact several countries achieve universal coverage through regulated private insurance markets that look quite different from the proposals most commonly discussed in U.S. politics.
The international evidence does not tell us exactly what a U.S. system would cost, because American healthcare has unique features like higher physician salaries, greater use of expensive technology, and a larger share of spending on end-of-life care. But it does tell us that covering everyone is not inherently more expensive than covering most people. Every other wealthy democracy has figured out a way to do it at lower total cost. The open question is not whether it is possible but whether the political and structural barriers to reorganizing the American system can be overcome.