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A single-payer universal healthcare system would reduce U.S. national health expenditures by more than $1 trillion and avert 114,000 deaths annually, according to a new Yale single-payer study savings analysis from researchers at the Yale School of Public Health.
How the Yale Single-Payer Study Savings Model Was Built
The study, published July 24 in the preprint server medRxiv and not yet peer-reviewed, modeled the transition from the current multi-payer system to a single-payer structure as proposed under the Medicare for All Act. It used 2024 National Health Expenditure data as its baseline and incorporated insurance coverage estimates from the American Community Survey and the Commonwealth Fund Biennial Health Insurance Survey.
Why the Authors Describe Their Estimates as Conservative
The authors noted that their estimates are conservative in several respects. They did not count the reduction in billing burden for providers, excluded long-term savings from earlier diagnosis and preventive care, and attributed excess mortality due to underinsurance only among adults aged 19 to 64.
The Headline Savings Figure From This Yale Single-Payer Study
The researchers estimated that a single-payer system would bring national health spending down from $5.28 trillion to $4.24 trillion annually, a net reduction of $1.04 trillion, or 19.7%.
The Five Mechanisms Driving Gross Reductions
Five mechanisms drove $1.35 trillion in gross reductions under a single-payer system. International reference pricing on pharmaceuticals accounted for $377.5 billion by benchmarking U.S. drug prices to those paid in comparable high-income countries, yielding a 51% reduction. Aligning all provider payments to Medicare reimbursement rates would save $295.6 billion. Administrative overhead would drop by $286.3 billion through consolidation of billing and insurance functions into one reimbursement system. Reduced fraudulent billing, modeled as an 8% reduction consistent with Taiwan’s single-payer transition, would account for $285.7 billion in savings. Finally, averted emergency department visits and hospitalizations that timely primary care access would prevent contributed $100 billion to the savings total.
Offsetting Costs Within the Yale Single-Payer Study Savings Model
Under a single-payer system, three mechanisms would raise spending by a combined $304 billion, partially offsetting the reductions above. Expanded utilization by currently uninsured and underinsured individuals would account for $197.7 billion in additional spending, and universal dental coverage would add another $54.7 billion. Recognition of previously uncompensated hospital care would account for the remaining $51.7 billion.
The Mortality Estimates Tied to Coverage Expansion
The study estimated that 62,863 lives would be saved annually relative to the current system by extending adequate health coverage to the entire U.S. population. The researchers used a mortality hazard ratio of 1.40 for the uninsured and 1.25 for the underinsured, both measured against the adequately insured population. Nearly half of the estimated mortality benefit is attributable to the underinsured rather than the uninsured, with 33,232 (52.9%) stemming from the uninsured population and 29,631 (47.1%) from the underinsured.
The HR 1 Reversal Component Within This Yale Single-Payer Study
An additional 51,311 deaths per year would be averted by reversing coverage reductions enacted under HR 1, bringing the combined annual mortality benefit to 114,174 lives. Of that figure, 20,111 deaths are linked to people losing coverage through Medicaid eligibility restrictions, work requirements and the expiration of enhanced ACA subsidies. Another 18,200 deaths follow from the withdrawal of federal assistance that helps low-income seniors afford prescription drugs, and 13,000 are attributed to the suspension of minimum staffing standards in nursing homes.
How the Estimates Held Up Under Sensitivity Testing
The study’s savings estimates held up across multiple sensitivity analyses. Even under the most conservative assumptions tested, which included substituting a smaller pharmaceutical price reduction and removing the fraud adjustment entirely, the system-wide savings remained at least $663.3 billion, or 12.6% of current spending.
What This Yale Single-Payer Study Savings Estimate Means Going Forward
As a preprint that has not yet undergone peer review, this study’s specific figures remain subject to further scrutiny and revision before formal publication, though the researchers’ explicit sensitivity analyses suggest the core finding of substantial system-wide savings is not solely dependent on any single modeling assumption. Given that single-payer healthcare remains a politically contested policy question, this study will likely be cited by proponents of Medicare for All while facing scrutiny from critics who may challenge its underlying assumptions about administrative savings, provider payment alignment, and mortality hazard ratios.
What to Watch Going Forward
As this study moves through peer review, health policy researchers and industry stakeholders will likely watch whether its core estimates, particularly the $1.04 trillion net savings figure and the mortality projections tied to both coverage expansion and HR 1 reversal, hold up to independent scrutiny and replication. Given the study’s direct engagement with current policy debates over Medicaid work requirements and ACA subsidy expiration, this Yale single-payer study savings analysis may become a reference point in ongoing congressional and public discussions about healthcare financing reform, regardless of which side of the debate ultimately finds its methodology most persuasive.
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