Fully Insured Group Health Insurance in California (2026)

Fully insured is the arrangement most people picture when they think of group health insurance: you pay the carrier a fixed monthly premium, and the carrier pays the claims, all of them, no matter how bad the year gets. It is the default for California small groups and the baseline every other funding type gets measured against.

How California defines and rates small group

California defines small group as 1-100 employees, broader than the federal 1-50 definition. Inside that band, rates are member-level age rated with no medical underwriting: the carrier cannot ask health questions, cannot decline your group, and must charge the same rate for the same plan regardless of which broker writes it. That last point matters – our comparison work costs you nothing and cannot raise your price.

What fully insured plans must cover

Small group plans are ACA-compliant by construction: essential health benefits, no annual or lifetime dollar maximums on covered benefits, and out-of-pocket caps ($10,600 self-only / $21,200 family for 2026). California adds its own benefit mandates on top, which apply to insured plans but not to self-funded ones – one of the honest reasons larger employers leave this category.

The California carrier lineup

The fully insured small group market here is deep: Anthem Blue Cross, Blue Shield of California, Kaiser Permanente, Health Net, UnitedHealthcare and Aetna in select markets. Covered California for Small Business (CCSB) is the exchange route – it can let employees pick across carriers, and employers with fewer than 25 full-time-equivalent employees and modest average wages may qualify for the federal small business health care tax credit, which is only available through the exchange.

Who fully insured fits – and who it does not

It fits groups that want budget certainty and zero claims risk, groups with older or higher-risk populations who benefit from no underwriting, and any employer who does not want to think about their health plan more than once a year. It does not reward healthy groups: run better-than-average claims and the savings stay with the carrier. That frustration is the front door to level funding and ICHRA.

Reviewed August 2026. Plan availability, networks and rates vary by county and group size. We never publish premiums we cannot verify for California – request a quote for real numbers.