Governor Gavin Newsom signed SB 576 on October 6, 2025, making California the first state to force streaming platforms to keep their ad volume in check. Starting July 1, 2026, any video streaming service reaching California consumers will be barred from blasting commercial audio louder than the program a viewer is watching. The law extends volume controls that Congress applied to cable and broadcast television back in 2010, closing a gap that left streaming audiences reaching for the remote every time an ad break hit.
California closes the streaming volume loophole
For more than a decade, the federal CALM Act has required traditional TV broadcasters and cable operators to match commercial volume to program audio. The Federal Communications Commission enforces that rule and still fields complaints from viewers who say ads are too loud. But the CALM Act was written before ad-supported streaming tiers existed at Netflix, Hulu, Amazon Prime Video, Peacock, and other platforms. Because those services deliver content over the internet rather than through broadcast or cable infrastructure, they fell outside the FCC’s loudness mandate. SB 576 fills that gap at the state level.
Under the chaptered bill, a qualifying “video streaming service” serving consumers in California is prohibited from transmitting commercial advertisement audio louder than the video content those ads accompany. The law ties its technical compliance standard to existing FCC regulations under the CALM Act, which means streaming services will measure loudness the same way broadcasters already do rather than inventing a new metric. That alignment simplifies enforcement and removes any argument that the standard is arbitrary.
An Assembly Committee analysis from a hearing held on June 24, 2025, laid out the policy rationale: loud streaming ads are a consumer irritant that existing federal law does not address, and California has the market weight to push the industry toward compliance. Because nearly every major streaming platform serves California subscribers, the practical effect could reach well beyond the state’s borders. Platforms are unlikely to build separate audio pipelines for a single state, so national or even global ad-volume practices could shift.
How SB 576 builds on the federal CALM Act framework
The bill’s architecture borrows directly from federal precedent. Congress passed the Commercial Advertisement Loudness Mitigation Act in 2010, directing the FCC to adopt rules preventing broadcast and cable commercials from exceeding program volume. The FCC’s enforcement program relies on a standardized loudness measurement methodology, and SB 576 extends that same approach to streaming, anchoring its requirements in a standard the industry already understands.
That design choice matters for two reasons. First, it gives streaming services a clear, established benchmark rather than a vague directive to keep ads “reasonable.” Second, it positions California’s law as a complement to federal regulation rather than a conflicting mandate, reducing the likelihood of a preemption challenge. The bill does not create a new state agency or a standalone enforcement mechanism; instead, it leans on the technical framework the FCC has maintained for over a decade.
The legislative history confirms that SB 576 applies specifically to services that meet the bill’s definition of a “video streaming service.” Lawmakers and staff examined which platforms qualify and how the law handles services that bundle streaming with other content delivery methods, such as cable log-ins or device-based apps. The effective date of July 1, 2026, gives companies roughly eight months from the signing to adjust their ad-insertion systems, test loudness controls, and update contracts with advertisers.
Technically, compliance will require streaming platforms to normalize the loudness of ad audio relative to the programming it interrupts. In practice, that likely means adopting or extending existing loudness monitoring tools, applying automated gain control to incoming ad files, and rejecting or remastering spots that exceed the allowable thresholds. Many major media companies already use similar workflows for their broadcast channels, but pure-play streaming services and smaller ad networks may face a steeper learning curve.
Open questions about enforcement and industry response
Several practical issues remain unresolved. The bill ties compliance to FCC standards, but the FCC itself has no jurisdiction over internet-delivered video. If a streaming service violates SB 576, enforcement would fall to California authorities, and the statute does not spell out, in the same level of detail as federal rules, how viewers should file complaints or what specific penalties will apply. How the state government chooses to implement monitoring, investigate alleged violations, and escalate repeat offenses will determine whether the law has real teeth or functions mainly as a deterrent.
California could lean on several tools. Consumer protection agencies already handle misleading advertising and privacy complaints; loud ads might be folded into those workflows. The state could also encourage platforms to publish self-certification reports or submit to third-party audits. None of those mechanisms are spelled out in the statute itself, however, leaving regulators with significant discretion-and leaving companies uncertain about how aggressively the rules will be applied.
Industry response is another unknown. Major streaming platforms have not publicly detailed how they plan to meet the July 2026 deadline. Ad-supported tiers at services like Netflix, Disney+, and Amazon Prime Video rely on programmatic ad insertion, where different advertisers supply their own audio mixes. Standardizing loudness across thousands of ad creatives from hundreds of buyers is a technical lift, especially when ads are swapped dynamically based on viewer profiles and real-time bidding. Still, broadcasters and cable operators faced similar complexity after the CALM Act took effect and ultimately integrated loudness checks into their ad delivery pipelines.
For larger platforms, the incremental cost may be modest compared with the risk of noncompliance in a market as large as California. Smaller streaming services, niche FAST (free ad-supported television) channels, and independent app developers could feel a heavier burden, particularly if they rely on third-party ad networks that do not yet guarantee compliant audio. Those providers may need to renegotiate contracts or seek new partners that can certify loudness controls.
There is also the question of whether other states will follow California’s lead. If they do, a patchwork of state-level streaming audio rules could emerge, each referencing the same FCC standard but differing in enforcement style, penalties, and complaint handling. That kind of fragmentation often prompts industry groups to lobby Congress for a single national framework. In this case, pressure could build for lawmakers to amend the CALM Act or for federal regulators to clarify their authority over streaming, bringing internet-delivered video under the same umbrella as broadcast and cable.
If California remains the only state with such a law, platforms may still adopt uniform loudness controls simply because carving out one state’s ad pipeline would cost more than applying the fix everywhere. Given the interconnected nature of ad tech infrastructure, engineers generally prefer consistent rules rather than state-by-state exceptions. Viewers outside California could therefore benefit indirectly from SB 576 as advertisers remix their audio assets to meet the strictest standard in their distribution footprint.
For consumers, the immediate promise is straightforward: fewer jarring jumps in volume when an ad break starts. For policymakers, SB 576 serves as a test case for how far states can go in regulating aspects of streaming that federal law has not yet reached. And for the streaming industry, the law is a signal that user experience issues once tolerated as quirks of a new medium are now mature enough to draw legislative attention. How companies respond between now and July 2026 will show whether they see loudness control as a narrow compliance task-or as the first step toward a broader rethinking of how ads fit into the streaming experience.
