Overview

• Gov. Gavin Newsom signed SB 576 on Oct. 6, with the law taking effect July 1, 2026.
• The measure bars platforms from transmitting ads louder than the surrounding content and directs compliance with FCC CALM Act standards.
• Sen. Tom Umberg authored the bill after his aide Zach Keller reported loud streaming ads repeatedly waking his newborn daughter, Samantha.
• Industry groups including the Motion Picture Association initially opposed the bill over technical challenges but dropped formal opposition after amendments limited private lawsuits and left enforcement to state authorities.
• How California will monitor and enforce compliance remains unclear, as rising FCC complaints and the state’s outsized market influence could drive broader, possibly nationwide, changes.