The KFF survey, released Thursday, found that total family plan premiums, including employer contributions, reached $28,303 in 2026, up roughly 5% from 2025. But the burden falls unevenly: workers pay about 37% of the premium at small firms (10-199 employees), compared to 25% at larger firms. At small businesses, average worker contributions for family coverage hit $9,687, nearly $3,000 more than at firms with 5,000 or more employees.
Nearly one in three covered workers at small firms has a plan requiring an employee contribution of over $12,000 annually, more than double the rate at large firms. Meanwhile, 66% of small firms offer health benefits, up from 59% in 2025 but still below the 72% level of five years ago.
Small businesses often lack the bargaining power of larger ones, making them more dependent on insurers and more likely to pass along rate increases to employees. They also face higher average deductibles: more than half of small-firm workers have a deductible of at least $2,000, compared to a third at large firms.
The cost surge comes as Americans head into open enrollment season. An analysis from PricewaterhouseCoopers projects commercial healthcare group costs will rise 9% in 2027, while Aon forecasts a 9.5% increase before cost-mitigation measures. With premiums eating up nearly 8% of real household median income in 2025, polls show 69% of Americans say a 10% increase would negatively impact their household finances.