Overview
- California’s SB 576, which takes effect Wednesday, July 1, 2026, prohibits streaming services that serve California viewers from transmitting ads at a higher volume than the shows or movies they interrupt.
- The law applies state-level loudness standards drawn from the 2010 federal CALM Act and explicitly does not give viewers a private right to sue over a loud ad.
- Industry groups including the Motion Picture Association and the Streaming Innovation Alliance opposed the measure and major platforms have not disclosed how they will comply.
- Technical compliance is unresolved because many services use server-side ad insertion and varied ad files; possible fixes include audio normalization or metadata-based leveling and may raise risks of sync glitches or added processing costs.
- The rule could prompt platforms to normalize ad volume nationwide rather than geofence California users, and enforcement details and whether other states or Washington will act next remain the key things to watch.