California’s Senate Bill 37 (SB 37), effective January 1, 2026, is the most consequential update to attorney advertising rules in decades. If your law firm advertises online — or buys leads from third-party vendors — this law directly affects how you generate cases in California. SB 37 doesn’t just target misleading claims. It changes who is responsible for advertising, what disclosures are required, and how lead vendors and brokers must operate. This guide breaks down:

July 2026 Update: SB 37 Is Now Enforceable Law

SB 37 has been in effect for six months. Compliance is no longer theoretical. Here is what has changed since the law took effect on January 1, 2026. The Beverly Hills Bar Association published an analysis warning that SB 37 significantly increases compliance risk and penalties. Here is how enforcement works:
  1. A consumer files a complaint with the State Bar of California
  2. The State Bar has 21 days to determine whether substantial evidence of a violation exists
  3. If flagged, you have 72 hours to pull the ad
  4. If the ad stays up or gets republished, consumers and competitors can sue
Statutory damages range from $5,000 to $100,000 per violation, plus attorney's fees and injunctive relief. Before SB 37, the State Bar was the sole enforcer. Now, any person can bring a civil action for violations. A single non-compliant landing page across multiple campaigns can multiply your exposure fast. For more detail, see the CaliNetworks compliance checklist and Walker Advertising's overview for firms using referral networks and lead vendors.

What SB 37 Requires (Plain English)

Under SB 37, an “advertisement” includes any written, recorded, or electronic communication that encourages someone to hire a lawyer — even if it’s shown to a limited audience or routed through a lead-gen funnel. Official bill text. Attorney ads must now: This law was written specifically to stop anonymous, results-driven lead funnels that obscure who the actual lawyer is.

Platform-by-Platform: What Changes and How to Stay Compliant

Let's dive into each digital advertising platform and talk about how SB 37 will impact each of your campaigns there.

Google Ads (Search, Display, Performance Max, Landing Pages)

Google ads often rely on short headlines and strong claims — which is where many SB 37 issues appear.

What changes

Key takeaway: If a consumer can’t clearly tell who the lawyer is and where they practice, the ad is at risk.

sb 37 compliant google ads

YouTube Ads (Pre-Roll, Shorts, Long-Form)

SB 37 explicitly requires disclosures to be “intelligible if spoken.”

What changes

Key takeaway: If it’s spoken, it must be clear, slow enough, and understandable — not buried.

sb 37 youtube compliant ads

Facebook & Instagram Ads (Feed, Reels, Lead Forms)

Meta ads blur the line between content and advertising — SB 37 treats them all as ads.

What changes

Key takeaway: If the lead form hides the lawyer’s identity, the entire funnel is exposed.

sb 37 facebook ads compliance

TikTok Ads (UGC, Spark Ads, Storytelling)

TikTok’s “storytime” culture is directly in SB 37’s crosshairs.

What changes

Key takeaway: TikTok ads must tell stories without implying certainty or speed.

sb 37 ads compliance

Legal Practice Areas Most Affected

SB 37 applies to all legal advertising, but enforcement pressure will hit hardest in:

If your marketing historically leaned on strong promises or third-party lead funnels, SB 37 is a material risk.

Lead Vendors and Bought Leads: The Biggest Shift

SB 37 directly targets the lead-broker ecosystem.

High-risk structure

Lower-risk structure

If a vendor refuses transparency, that’s a red flag under SB 37.

What Your Law Firm Should Do Now

Final Thoughts

SB 37 isn’t just a compliance update — it’s a marketing architecture reset.

Firms that build transparent, attorney-led marketing will adapt easily. Firms that depend on anonymous funnels and aggressive promises will face higher costs, fewer vendors, and more scrutiny.

Need help? Our team of experts is standing by to audit your law firm's advertising ecosystem and help you get complaint with California laws.

Book a free consultation to get started.