Help Your Business Brace for Surging Health Plan Enrollment  

OCTOBER 7, 2025

For years, small businesses in the U.S. have relied on the individual health plan ACA Marketplace to help their employees find health insurance coverage. Under expanded tax credits, coverage through the Marketplace was made more affordable for more Americans, resulting in record enrollment for 2025.

However, with significant premium increases expected for 2026 and the potential expiration of premium tax credits, Marketplace health plans could become unaffordable for millions of members. Employees who cannot access affordable coverage elsewhere may turn to employer-sponsored health plans. Smaller businesses should brace for higher enrollments and spending ahead.

More Pressure on Employer-Sponsored Health Plans

Enhanced premium tax credits — first made available through the American Rescue Plan Act in 2021 and later extended under the 2025 Inflation Reduction Act — are set to expire at the end of 2025. These health insurance tax credits increased the amount available to cover health insurance premiums for those who already qualified for financial help, and expanded the subsidies to middle-income enrollees, many of whom were previously priced out of the Marketplace.

If these tax credits are not renewed, middle-income enrollees will no longer qualify for any subsidies and will need to pay full price. Based on insurance carrier rate filings for the 2026 plan year, premiums are expected to increase 20% for Marketplace health plans — the largest increase since 2018.

These premium increases, combined with the expiring tax credits, have led health policy experts at KFF to estimate that the average out-of-pocket (OOP) premium for most people buying Marketplace coverage will more than double.1 The resulting sticker shock will drive many to seek employer coverage instead.

Without a cost management strategy in place, small businesses will be hit hard. Employers that offer health benefits will be overwhelmed by higher enrollments and expenses, while employers that don’t offer benefits will lose workers to companies that do.