SB 420: Property tax: welfare exemption: detention facilities.
This bill aims to regulate the use of high-risk automated decision systems, which are systems that can make decisions that have a significant impact on individuals or groups. A covered provider must make an AI detection tool available to users at no cost, which outputs system provenance data. The bill requires a developer or deployer to perform an impact assessment before making the system publicly available or deploying it. The impact assessment must be kept confidential, and the developer must provide a copy to the state agency or the attorney general/civil rights department within 30 days. The bill also authorizes the attorney general/civil rights department to enforce compliance and allows developers to cure violations within 45 days. Additionally, state agencies cannot award contracts for high-risk automated decision systems unless the developer has certified that the system does n…
- What is the current status of SB 420?
- As of October 1, 2026, SB 420 is recorded as "Chaptered/Signed": it has been signed by the Governor and chaptered into law. The last recorded action, on September 29, 2026, was "Chaptered by Secretary of State. Chapter 750, Statutes of 2026".
- Did SB 420 pass?
- Yes. SB 420 passed both houses and was signed into law (last action September 29, 2026). Most California bills signed in a given year take effect on January 1 of the following year, unless the bill carries an urgency clause or sets its own operative date.
- Who wrote SB 420, and where is it now?
- SB 420 was authored by Sen. Stephen Padilla with 8 coauthors. It is filed under Revenue and Taxation, alongside 197 other California Revenue and Taxation bills this session.
| Sep. 29, 2026 | Chaptered by Secretary of State. Chapter 750, Statutes of 2026. |
| Sep. 29, 2026 | Approved by the Governor. |
| Sep. 04, 2026 | Enrolled and presented to the Governor at 2 p.m. |
| Aug. 28, 2026 | Assembly amendments concurred in. (Ayes 32. Noes 0.) Ordered to engrossing and enrolling. |
| Aug. 27, 2026 | From committee: That the Assembly amendments be concurred in. (Ayes 4. Noes 0.) |
LEGISLATIVE COUNSEL'S DIGEST
The people of the State of California do enact as follows:
SECTION 1.
Section 214.12 is added to the Revenue and Taxation Code, to read:214.12.
(a) For purposes of Section 214, “property used exclusively for religious, hospital, scientific, or charitable purposes” shall not include property, or any portion thereof, operated as a detention facility.