The federal government paid approximately $450 billion to private Medicare Advantage insurers in 2024 to cover Medicare beneficiaries. That payment flows into the revenue of four dominant corporations. Before any of it reaches a physician, a hospital, a skilled nursing facility, or a pharmacy — before a single claim is paid — a portion is extracted for administrative overhead, executive compensation, shareholder returns, and the profit margins of subsidiary companies that sit between the insurer and the care.
The medical loss ratio is the mechanism that is supposed to govern how much of the payment reaches care. The way it is calculated in Medicare Advantage, and the structure of the companies receiving the payments, means the effective share reaching actual care is substantially lower than the reported figure suggests — and substantially lower than what traditional Medicare, with its two percent administrative overhead, retains for non-care purposes.
This article documents what the profit extraction model looks like in concrete terms: what is taken before care is reached, by whom, through what mechanisms, and what the comparison to traditional Medicare administration actually costs the program.
The Medical Loss Ratio in Medicare Advantage
The Affordable Care Act established medical loss ratio requirements for commercial health insurance: insurers in the large-group market must spend at least 85 percent of premium revenue on claims and quality improvement activities; insurers in the individual and small-group markets must spend at least 80 percent. Insurers that fall below those thresholds must issue rebates to policyholders.
Medicare Advantage operates under a similar 85 percent MLR requirement, but with a critical difference in how the floor is calculated. The ACA’s commercial MLR includes a defined set of activities that count as “quality improvement” — a category that is distinct from pure administrative overhead but distinct enough from direct claims payment that its boundaries matter. In Medicare Advantage, the quality improvement category is defined broadly enough to absorb activities — data analytics, care coordination infrastructure, utilization management — that function operationally as administrative overhead but count toward the MLR calculation as quality improvement spending.
The consequence is that MA plans can report MLRs at or above 85 percent while retaining a larger share of revenue for administrative and profit purposes than the headline figure suggests. Academic research and MedPAC analysis have found that when quality improvement spending is excluded from the MLR calculation — treating it as overhead rather than care — the effective share of MA revenue reaching direct care delivery is lower than the reported 85 percent floor.
UnitedHealth Group reported a full-year 2025 MLR of 89.1 percent for its insurance operations — meaning 10.9 percent of its insurance revenue was retained for administrative costs and profit before claims were paid. On $344.9 billion in UnitedHealthcare revenue, that 10.9 percent represents approximately $37.6 billion retained for non-claims purposes at the insurance subsidiary alone. That figure does not include the revenue and margin of Optum, the subsidiary providing services to UnitedHealthcare from inside the same corporate parent.
The Vertical Integration Problem
The MLR calculation creates the appearance of a clean distinction between what the insurer spends on care and what it retains. That distinction is obscured by the vertical integration structure of the dominant MA carriers — and most dramatically by UnitedHealth Group, the largest MA insurer and one of the largest corporations in the world.
UnitedHealth Group operates two primary business segments. UnitedHealthcare is the insurance carrier: it collects premiums and government capitated payments, pays claims, and manages coverage. Optum is the health services company: it provides pharmacy benefit management through OptumRx, care delivery through Optum Health (which employs or is affiliated with more than 90,000 physicians), data analytics through OptumInsight, and financial services through Optum Financial.
In 2025, Optum reported full-year revenues of $270.6 billion — a services business nearly as large as the insurance carrier whose members it predominantly serves. When UnitedHealthcare pays a claim to an Optum Health physician, pays OptumRx for pharmacy benefit management, or contracts with OptumInsight for data analytics, those payments count as claims or quality improvement spending in the MLR calculation for UnitedHealthcare — but they generate revenue and profit within Optum, which is a subsidiary of the same parent corporation.
The payment is not leaving UnitedHealth Group. It is moving between subsidiaries of the same parent and being counted as care spending in the process. What the insurer pays its own subsidiary for care services does not face the same market discipline as a payment to an independent provider — the pricing of intra-company transactions is an internal decision, not a competitive market outcome. CMS does not have visibility into the internal transfer pricing between UnitedHealthcare and Optum subsidiaries that determines what share of the reported MLR reflects arm’s-length claims payment versus intra-company margin.
The federal government, and the 33 million Medicare beneficiaries whose coverage is being administered, have no way to determine from reported MLR figures what portion of the 89.1 percent denominator is reaching independent providers delivering care and what portion is moving from UnitedHealthcare to Optum subsidiaries and remaining within the consolidated enterprise.
What the Numbers Show
The scale of extraction from the Medicare Advantage program becomes visible through the consolidated financial statements of the dominant carriers.
UnitedHealth Group reported full-year 2025 revenues of $447.6 billion — the entire federal Medicare Advantage program budget fits within one company’s annual revenue. UnitedHealthcare Medicare & Retirement revenues alone were $171.3 billion in 2025, a 23 percent increase year-over-year driven by Medicare Advantage membership growth. The company’s CEO compensation — Stephen Hemsley succeeded Andrew Witty as CEO during 2025 — and executive compensation across the senior leadership team are drawn from revenue that originates substantially from federal Medicare payments.
The four dominant carriers — UnitedHealth Group, CVS Health/Aetna, Humana, and Elevance Health — collected the overwhelming majority of the $450 billion in annual federal MA payments. Their combined revenues substantially exceed the MA program budget because they also receive Medicaid managed care payments, commercial insurance premiums, and other government program revenue. The MA program is not their only government revenue stream; it is their largest and fastest-growing one.
Shareholder returns funded from government capitated payments are a concrete measure of what is extracted before care is reached. Dividends and share buybacks — payments to shareholders — are funded from the retained earnings of corporations whose primary revenue source is public program payments. In the years prior to the financial pressure UnitedHealth experienced in 2025 from elevated Medicare Advantage utilization and reduced rate adequacy, the company returned tens of billions of dollars annually to shareholders through buybacks and dividends — capital that originated as federal Medicare payments.
The Administrative Overhead Comparison
The comparison to traditional Medicare’s administrative overhead is not rhetorical. It is a direct accounting of what the privatization decision costs.
Traditional Medicare administers the program — paying claims, managing enrollment, conducting audits, operating the appeals system — at approximately two percent of program expenditures. The federal agency administering the largest health insurance program in the world spends two cents of every dollar on administration and directs the remaining 98 cents to paying providers for care delivered.
Medicare Advantage’s effective administrative overhead — including the MLR retention, quality improvement spending that functions as overhead, broker commissions funded from program payments, marketing expenditures, and the profit margins embedded in intra-company transactions — substantially exceeds two percent. Independent analyses and MedPAC have found effective administrative loads in the range of 15 percent or higher when the full cost of private administration is accounted for.
The gap — call it 13 percentage points against a program spending $450 billion annually — represents approximately $58 billion per year in program expenditure that goes to administration and profit rather than care. [Editorial note: figure is an analytical derivation — 13 percentage points × $450 billion program expenditure — not a published figure. Verify against MedPAC or academic source before publication.] That figure is separate from the $84 billion overpayment documented in Article 05. The overpayment is the excess payment generated by the benchmark rate structure and upcoding. The administrative gap is the cost of private administration itself — what the program pays for choosing private carriers over direct government payment to providers.
Taiwan’s National Health Insurance program administers universal coverage for the entire country at 1.07 percent administrative overhead. Canada’s provincial Medicare programs operate at administrative overhead rates below five percent. The United States’ traditional Medicare program at two percent is in the same range as peer country public programs. The Medicare Advantage program at 15-plus percent is in the range of the commercial insurance market — the administrative cost structure of a profit-maximizing industry, applied to a public program.
What Traditional Medicare Does Not Extract
The comparison between Medicare Advantage and traditional Medicare in terms of profit extraction is clarified by what traditional Medicare simply does not have.
Traditional Medicare has no shareholders. There is no return on equity, no buyback program, no dividend to fund. The program exists to pay for care. Every dollar that does not go to care goes to administration, and the administrative mandate is to minimize rather than maximize that share.
Traditional Medicare has no executive compensation at private insurer scale. The administrator of CMS earns a federal government salary. The CEO of UnitedHealth Group earned tens of millions of dollars annually, funded by revenue that includes $171.3 billion in Medicare and Retirement program payments in 2025 alone.
Traditional Medicare has no broker commissions. There is no enrollment marketing budget. There is no $611 per-member broker commission paid to steer beneficiaries into the program. The program is the default — beneficiaries who do nothing are in traditional Medicare.
Traditional Medicare has no pharmacy benefit manager taking a margin between the government payment and the drug cost. There is no Optum Rx equivalent sitting between Medicare Part B drug coverage and the provider administering the drug.
Traditional Medicare has no intra-company transfer pricing that obscures what share of the payment reaches care versus what share flows to a subsidiary and becomes profit within a consolidated enterprise.
These are not features of traditional Medicare that need to be celebrated. They are simply the consequences of the structural difference between a public program with a mandate to pay for care and a set of private corporations with a mandate to generate returns for shareholders. The privatization decision — made in 2003, grown to $450 billion annually — is the decision that introduced the extraction architecture into what was, and in its traditional form remains, a two-percent-overhead public program.
The 2025 Pressure and What It Reveals
UnitedHealth Group’s 2025 financial results — an MLR of 89.1 percent, a profit margin of 4.2 percent down from 8.1 percent the prior year, a loss from operations at Optum Health — were presented by the company as the result of higher-than-expected Medicare Advantage utilization. MA enrollees were using more care than the company’s pricing models anticipated. The company plans to exit approximately 1.3 to 1.4 million MA members in 2026 — reducing enrollment in markets where the capitated payment rate is insufficient to maintain margins — and has projected an MLR of 88.8 percent for 2026.
The 2025 experience illustrates the structural tension at the center of Medicare Advantage. When MA enrollees use the care they need — when the program delivers what enrollment advertising promises — the insurer’s financial results deteriorate. The company’s response is to raise rates where possible and exit markets where it cannot. The 1.3 million members who will lose their current MA plan coverage in 2026 will need to find alternative coverage — in a different MA plan, or back in traditional Medicare — because the plan they were in was not profitable enough to retain them.
The adjustment mechanism in a private insurer managing a capitated public program is not to absorb the cost of care needed by enrolled beneficiaries. It is to reprice, exit, or reduce the enrollment that is generating the losses. That adjustment mechanism is not available to traditional Medicare. When Medicare enrollees need care, Medicare pays for it. There is no exit decision, no market withdrawal, no 1.3 million members told to find alternative coverage because the program’s finances require it.
The complete Medicare Advantage series
01 — What Medicare Advantage Actually Is — and How It Replaced Traditional Medicare
02 — The Political History: How Private Insurers Got Into Medicare
03 — The Marketing Machine: How Enrollment Works and Who It Targets
04 — Risk Adjustment: The Payment System That Rewards Diagnosis, Not Treatment
05 — The $84 Billion Overpayment: How Upcoding Works at Scale
06 — The Profit Extraction Model: What Insurers Take Before Care Is Delivered
07 — Prior Authorization in Medicare Advantage: What OIG Found
08 — The Denial and Appeals Record: What Happens When Enrollees Push Back
09 — Network Adequacy and the Coverage Gap
10 — The Extra Benefits Myth: Dental, Vision, and What the Fine Print Says
11 — When Medicare Advantage Fails: Disenrollment at the End of Life
12 — The Reform Proposals: From Audit Reform to Elimination
13 — What the Evidence Resolves — and What It Doesn’t
This article was researched and drafted with AI assistance under human review. See our full AI and editorial practices.