California’s AI Transparency Act: What Estate Attorneys Should Expect in 2026
If you use AI tools in your estate planning practice, or if you’re thinking about it, you need to know about California’s AI Transparency Act and its amendments will change how AI-generated content must be labeled and tracked. While the law mainly targets big tech companies, it sets a precedent that could shape how all professionals, including lawyers, use AI tools going forward.
At John Park Law, our California estate planning attorneys know that as technology evolves, you need a law firm that’s evolving with it. That’s why we’re breaking down the new AI laws and how they will continue to impact our practice and our clients.
What Is the California AI Transparency Act?
The California AI Transparency Act, originally passed as Senate Bill 942 and then substantially amended by Assembly Bill 853, creates new rules for companies that make generative AI systems. The original law, SB 942, was signed in September 2024, but the key amendments in AB 853, which set the current compliance schedule, were signed in October 2025. This extended the deadline for the general provisions to August 2, 2026, to give companies more time to comply.
The law requires “covered providers” to do three main things.
- They must offer a free AI detection tool that lets users check if the content was made by AI.
- They must give users the option to add visible labels to AI-generated images, videos, or audio.
- They must embed hidden data in AI content that shows where it came from.
The requirements are phased in for various entities:
- August 2, 2026: Original disclosures for covered generative AI providers (Core SB 942/AB 853 obligations).
- January 1, 2027: New obligations for Large Online Platforms (social media sites, etc.) to detect and disclose provenance data of content uploaded by users.
- January 1, 2028: Requirements for Capture Device Manufacturers (smartphones, cameras) to allow users the option to embed data to verify non-AI content authenticity.
Why California Estate Attorneys Should Care
You might be thinking this law doesn’t affect you since you’re not building AI systems. But here’s why it matters for your practice.
Many estate planning lawyers are starting to use AI tools to draft documents, summarize case law, review contracts, and communicate with clients. Tools like ChatGPT, Claude, and legal-specific platforms such as Harvey AI are becoming common in law offices. According to a Harvard Law School study, lawyers have seen productivity gains of more than 100 times when using AI for initial drafting tasks.
If the AI tools you use fall under this law, you’ll notice changes in how they work. You might see watermarks or labels on AI-generated content. The companies that make these tools will need to comply with disclosure requirements. This affects your workflow and how you explain your processes to clients.
Also, clients are asking more questions about whether lawyers use AI. Some clients worry about privacy and quality. Others want to know if their documents are being handled by a person or a machine. This law reflects growing public concern about AI transparency. Being able to talk clearly about how you use AI, and pointing to legal protections like this act, helps build trust.
What the Law Requires from AI Companies
Let’s get specific about what the California AI Transparency Act requires from covered providers. This helps you understand what to expect from the tools you might use.
- AI Detection Tools: Companies must provide a free, publicly accessible tool that lets users check if content was created or altered by their AI system. The tool needs to work for images, videos, and audio files. It should also return “provenance data” when available. Provenance data is information about where the content came from and how it was made.
- Manifest Disclosures: Users must have the option to include a visible disclosure on AI-generated content. This could be a watermark, label, or other clear marking that tells people the content is AI-generated. The disclosure needs to be clear, easy to understand, and hard to remove.
- Latent Disclosures: Companies must embed hidden information in AI-generated content. This latent disclosure should include details about the AI system that made it, and be difficult to remove. Think of it like metadata embedded in a photo file.
- License Management: If an AI company licenses its system to third parties, it must make sure those licensees follow the disclosure rules.
Contact Our California Estate Planning Lawyers
California’s AI Transparency Act marks a turning point. For years, AI development has moved faster than regulation. Now lawmakers are starting to catch up. The law shows that transparency will be a core requirement for AI systems going forward.
California is not done regulating AI. More laws are coming at both the state and federal levels. But if you build good practices now, you’ll be ready for whatever comes next. The goal is not to avoid AI but to use it responsibly and effectively in the service of all clients.
If you have questions about how these changes affect your estate planning needs or want to work with attorneys who prioritize staying current on legal technology and regulation, reach out to John Park Law. We help clients throughout California, Nevada, and Utah with comprehensive estate planning that protects what matters most to you. Call us at 925-320-7077 or fill out our contact form today for a confidential consultation, and let’s talk about your options.
John Park is a highly experienced attorney in estate planning, probate, business law and guardianship to help people organize the elements of their lives through careful estate planning and asset protection measures.