Limits how much people and families must pay out-of-pocket for prescription drugs under health insurance plans, starting with plan years that begin in 2026. The rule applies the same caps to individual and group health plans under existing federal health laws and requires plans and issuers to follow those limits.

The law also sets automatic annual increases to those caps tied to the medical care Consumer Price Index beginning in 2027. The changes take effect for plan years beginning on or after January 1, 2026.