2027 health insurance costs face renewed pressure as insurers propose a median 15% premium increase for Affordable Care Act Marketplace plans and individual-market enrollment declines. The developments affect Americans buying coverage without an employer. Federal research and state filings clarify why premiums vary, how assistance affects bills and when enrollment closes.
Key Takeaways
- Insurers proposed a median 15% rate increase for 2027 Marketplace coverage, according to an August KFF analysis.
- Individual-market enrollment fell 18% between June 2025 and June 2026, a decline of more than 4.6 million people.
- Illinois published a statewide weighted average rate increase of 14.1% for 2027 individual Marketplace plans.
- Federal Marketplace enrollment begins November 1, 2026, with January 15, 2027, as the final deadline.
The proposed premium increase comes as fewer Americans maintain individual health insurance coverage. In an October 14 report, KFF estimated that the market had contracted from 25.2 million enrollees in June 2025 to 20.5 million a year later. That count includes people buying plans through ACA Marketplaces and those purchasing comparable policies outside them.
For households selecting 2027 coverage, the difference between an insurer’s requested rate and the actual monthly bill remains substantial. Federal assistance, plan benefits, age and location can all influence what a customer pays.
2027 Health Insurance Costs Reflect Higher Proposed Rates
KFF reviewed public filings from 276 insurers across all 50 states and Washington, D.C., and found a median proposed increase of 15% for 2027 ACA Marketplace premiums. The August analysis described the requests as a second consecutive year of double-digit increases. The median finalized increase for 2026 was 20%, compared with an 18% median proposal before that year’s rates were finalized.
The 15% figure is not a national average increase in consumer bills. It is the midpoint of insurers’ proposed rate changes, and final rates can vary substantially by company, state and plan. Some states have already published approved rates, while individual premium estimates still depend on household circumstances.
Illinois provides an example. On October 14, the state’s Department of Insurance announced a 14.1% weighted average increase for individual Marketplace plans in 2027, compared with 28.8% for the previous year. Five insurers are offering plans through Get Covered Illinois. Officials emphasized that published insurer rates do not equal what people pay after selecting benefits and applying available assistance.
According to KFF’s review of detailed filings from 16 states and Washington, D.C., insurers cited increasing medical service prices, inflation and labor shortages. Local hospital consolidation and pricing can also affect negotiated medical costs, although the effect depends on competition within each market.
Enhanced federal premium tax credits expired at the end of 2025. Standard premium tax credits remain available to qualifying Marketplace customers, but eligibility and the amount of assistance depend on income and other factors.
In Illinois, approximately 85% of Marketplace enrollees received premium tax credits in 2026. State officials put their average monthly payment at $140 that year, a figure that should not be treated as a 2027 premium estimate.
Individual Insurance Enrollment Drops as Affordability Concerns Persist
The latest enrollment figures cover two different measures. KFF’s October report found an 18% decline in the broader individual insurance market between June 2025 and June 2026. Earlier figures showed paid ACA Marketplace enrollment dropping 12%, from 21.8 million in February 2025 to 19.2 million in February 2026.
The June total includes coverage purchased outside Marketplaces, while the February total counts people whose Marketplace policies had taken effect. Neither figure establishes that everyone who left the individual market became uninsured. Some may have moved to employer-sponsored or other coverage.
KFF said the reductions coincided with the end of enhanced premium tax credits and other changes affecting eligibility and enrollment. The organization also found that paid Marketplace enrollment had declined in nearly every state in its earlier February comparison, with New Mexico the exception.
Affordability concerns were evident before the latest enrollment estimate. In a survey conducted from February 12 through March 2, KFF found that 44% of returning Marketplace enrollees said healthcare costs made other household expenses harder to afford.
About 37% cited added difficulty paying for groceries, while 73% worried about covering emergency care or hospitalization costs.
Those findings describe surveyed returning enrollees, not every U.S. household. Budget pressures have also coincided with inflation outpacing wage growth in September, although national earnings figures do not explain an individual family’s insurance decisions.
Plan Costs and Enrollment Dates Shape 2027 Coverage Decisions
Comparing monthly premiums alone may overlook substantial expenses. Deductibles, copayments, coinsurance and annual out-of-pocket limits determine how costs are divided when covered services are used. Provider networks and prescription drug lists can further affect expenses, particularly for people who regularly visit specialists or take ongoing medications.
Marketplace plans generally fall into Bronze, Silver, Gold and Platinum categories. Those levels describe the division of covered medical costs between the insurer and the customer, not the quality of care.
Bronze plans commonly have lower premiums but higher deductibles. Eligible consumers who qualify for additional cost-sharing reductions must select a Silver plan to receive those particular savings.
Premium tax credits operate differently. Qualifying households may apply that assistance toward eligible plans in multiple categories. Applicants’ estimated income affects their assistance, making accurate household information important when choosing coverage.
Under Internal Revenue Service rules effective for tax years beginning in 2026, recipients must repay the full amount of any advance premium tax credits that exceed their final eligibility.
The federal Marketplace opens for 2027 enrollment on November 1, 2026. Plans selected by December 15 can take effect January 1, provided the first premium is paid. Shoppers enrolling from December 16 through January 15 generally have coverage beginning February 1. State-run Marketplaces can operate on different schedules.
Illinois began allowing consumers to preview 2027 plan options on October 19. HealthCare.gov also offers plan-price previews based on ZIP code and estimated income, although final prices are determined after a complete application.
Existing customers may be re-enrolled automatically, but renewal notices can identify changes in plan availability, premiums and benefits.
Frequently Asked Questions
Will everyone pay 15% more for health insurance in 2027?
No. The 15% figure is the median premium increase proposed by insurers in KFF’s review, not a uniform increase in household bills. Actual 2027 health insurance costs depend on the final plan rate, location, household circumstances and available assistance.
Why did individual health insurance enrollment decline?
KFF reported that enrollment fell as enhanced premium tax credits expired and other Marketplace changes took effect. Its figures do not show that every person leaving an individual plan became uninsured.
When does 2027 Marketplace open enrollment end?
On HealthCare.gov, enrollment begins November 1, 2026, and ends January 15, 2027. December 15 is the deadline for plans that begin January 1, while state-operated Marketplaces may set different dates.
Can a lower-premium plan have higher overall costs?
Yes. A plan with a lower monthly premium may have higher deductibles or costs when a patient receives care. Comparing covered providers, medicines and annual out-of-pocket limits can help clarify the differences.
Disclaimer: This article is for informational purposes only and does not constitute medical, financial, legal, tax, or insurance advice. Health insurance premiums, coverage options, subsidy eligibility, and enrollment deadlines may vary by state, insurer, and individual circumstances. Proposed rate increases may differ from final approved premiums. Readers should verify current information through a licensed insurance professional before making coverage decisions.
