Millions of Americans who buy their own health insurance through Affordable Care Act marketplaces could face dramatically higher costs in 2027. UnitedHealthcare of New York, Inc. has asked state regulators to approve a 52.1% premium increase for its individual market plans starting January 1, 2027, the largest request among carriers in the state’s newly published filings. The company points to rising medical costs, the expected end of enhanced federal subsidies, and new federal eligibility verification rules as the forces behind the request.
Subsidy expiration and federal rule changes collide in 2027 filings
The size of UnitedHealthcare’s request reflects more than ordinary medical inflation. The company’s filing with the New York State Department of Financial Services, tracked under SERFF number UHLC-134947070, covers both on-exchange and off-exchange HMO products. In its detailed application materials, the insurer lays out an actuarial narrative that projects a total annual medical trend factor of 11.3% for 2027, accounting for unit cost growth, utilization shifts, and benefit leveraging. That trend alone would produce a double-digit increase, but the filing goes further.
UnitedHealthcare explicitly names two additional forces in its narrative summary: the scheduled expiration of expanded ACA premium subsidies and a CMS Marketplace Integrity rule that tightens eligibility checks. The expanded subsidies, first enacted during the pandemic and extended through the Inflation Reduction Act, have kept premiums more affordable for lower- and middle-income enrollees by capping how much of their income they must pay for benchmark plans. Without congressional action to extend them beyond 2025, millions of people would lose enhanced financial assistance, and many healthier, cost-sensitive consumers would likely drop coverage or buy less comprehensive plans. Insurers expect the remaining pool to be older and sicker on average, which is why the subsidy cliff shows up as a rate driver rather than just a political talking point.
The CMS Marketplace Integrity rule adds a second layer of pressure. CMS finalized its 2027 Notice of Benefit and Payment Parameters, which expands state flexibility while adding stricter verification steps for special enrollment periods and eligibility. Carriers anticipate these checks will reduce enrollment among people who previously signed up through less scrutinized pathways, again shrinking the insured pool and concentrating risk among higher-cost members. UnitedHealthcare’s filing characterizes this as a structural shift in who remains insured in the individual market once both the subsidy expansion and looser eligibility pathways recede.
The hypothesis that carriers citing both subsidy expiration and CMS verification rules request larger increases than those citing only medical trend is directly testable. UnitedHealthcare’s New York filing bundles all three factors and arrives at 52.1%. Researchers and journalists can code the narrative sections of every public SERFF submission across states to see whether that pattern holds broadly or reflects company-specific conditions in New York. Because the narrative exhibits spell out which assumptions drive each rate factor, they offer a roadmap for disentangling pure medical inflation from policy-induced changes in the risk pool.
How the 52.1% request stacks up across carriers
New York’s Department of Financial Services publishes a consolidated overview of all ACA individual and small-group requests, and the 2027 posting shows UnitedHealthcare at the top of the range. The state summary lists double-digit proposed increases from several insurers but none as high as UnitedHealthcare’s 52.1% for individual HMO coverage. Other carriers cite similar cost pressures, including hospital and physician price growth, higher pharmacy spending, and the potential end of enhanced subsidies, yet most cluster in a more moderate band of requested hikes.
This spread underscores how differently carriers are interpreting the same federal backdrop. Some appear to be assuming a more gradual enrollment decline as subsidies shrink and verification tightens, while others, like UnitedHealthcare, are effectively pricing in a sharp contraction in the individual market. The company’s actuarial memorandum suggests that a smaller, higher-risk pool will need significantly more premium revenue per member to remain viable, particularly in regions where fixed administrative and network costs are spread over fewer enrollees.
New York’s prior-approval process means none of these requests are final. DFS actuaries will review each filing, question underlying assumptions, and can require revisions before setting 2027 rates. In past years, the department has often cut requested increases, sometimes substantially, when it concluded that carriers overstated trend or misjudged enrollment dynamics. That history is likely to shape negotiations over a proposal as aggressive as UnitedHealthcare’s.
For consumers, the stakes are high even if regulators pare back the request. A large approved increase would hit unsubsidized enrollees hardest, especially middle-income households that earn too much for premium tax credits under pre-pandemic rules. If the enhanced subsidies do expire, some of those families could see both their federal assistance shrink and their underlying premiums jump at the same time.
The 2027 filings also function as an early warning system for policymakers. When multiple insurers point to the same policy cliff as a major rate driver, it signals that the consequences of inaction will not be limited to abstract budget scores. Instead, they will show up as concrete premium notices landing in mailboxes and inboxes across the country. UnitedHealthcare’s 52.1% request in New York is one of the clearest examples so far of how that collision between federal policy and private actuarial judgment may play out.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
