A new California law will cap insulin out-of-pocket costs at $35 a month for millions of privately insured residents. SB 40, signed by Gov. Gavin Newsom and authored by Sen. Scott Wiener, bars state-regulated health plans from charging more than $35 for a 30-day supply of insulin, including copays, coinsurance and deductibles. The law also blocks insurers from requiring patients to meet their deductible before coverage begins. Supporters say the cap addresses insulin prices that forced some people to ration doses or skip medication altogether. The change applies only to private insurance plans regulated by the state, including Covered California and major insurers. The cap takes effect Jan. 1, 2026 for large-group plans and Jan. 1, 2027 for small-group plans.

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