What changed — AI law and regulation effective dates by jurisdiction

The change history of AI law and regulation effective dates by jurisdiction: When each AI-specific law, regulation and milestone actually takes effect — the instrument, the provision that states the date, the date itself, what it applies to, and the statutory text quoted verbatim from the enacted bill or the official journal. Answers 'when does the Colorado AI Act take effect', 'when do the EU AI Act high-risk obligations apply', 'when does Texas HB 149 start', 'what date does the Illinois AI hiring law kick in'. Covers US states, the EU, and the UK. Every date is quoted from the instrument itself — a signed bill, a session law, or the Official Journal — because the widely-repeated dates are frequently the superseded ones: Colorado's SB24-205 was moved to 2026-06-30 and then to 2027-01-01 by SB26-189, and the EU AI Act's Annex III high-risk date was moved from 2026-08-02 to 2027-12-02 by Regulation (EU) 2026/1744, while secondary trackers still print the old dates.

Change dates2

Tracked since2026-09-08

Last change2026-09-14

Since the initial snapshot of 2026-09-08, this register has changed on 1 further date. This register is re-checked against its sources on a schedule; a date appears below only when records were added or their values changed, so a quiet stretch means the register itself was quiet, not that nobody looked.

We keep the current verified state of each record, not the value it replaced — so each entry says which records changed and what they now state, never what they said before. Machine subscribers: poll changes.xml (Atom) or changes.json instead of re-fetching the dataset.

2026-09-14 — 10 records added or updated

Senate Bill 444 · GeorgiaNow states — Effective date: January 1, 2027. (State after this change; the previous value was not stored.)
H.B. NO. 2137 · HawaiiNow states — Effective date: upon its approval. (State after this change; the previous value was not stored.)
S.B. NO. 3001 · HawaiiNow states — Short title: Artificial Intelligence Disclosure and Safety Act; Effective date: upon its approval. (State after this change; the previous value was not stored.)
S. 8391 · New YorkNow states — Effective date: immediately. (State after this change; the previous value was not stored.)
S. 8420--A · New YorkNow states — Effective date: the one hundred eightieth day after it shall have become a law. (State after this change; the previous value was not stored.)
H 7349 SUBSTITUTE A · Rhode IslandNow states — Short title: Oversight of Artificial Intelligence Technology in Mental Health Care Act; Effective date: upon passage. (State after this change; the previous value was not stored.)
H 7538 SUBSTITUTE A · Rhode IslandNow states — Short title: Use of Artificial Intelligence by Healthcare Providers Notification Act; Effective date: upon passage. (State after this change; the previous value was not stored.)
S 2195 SUBSTITUTE A AS AMENDED · Rhode IslandNow states — Effective date: January 1, 2027. (State after this change; the previous value was not stored.)
LEGISLATIVE BILL 525 · Nebraska · Sec. 19Now states — Short title: Conversational Artificial Intelligence Safety Act; Effective date: July 1, 2027. (State after this change; the previous value was not stored.)
Public Law 119-12 · United StatesNow states — Short title: TAKE IT DOWN Act; Effective date: 1 year after the date of enactment of this Act. (State after this change; the previous value was not stored.)

2026-09-08 — Initial snapshot — 56 records

The first verified snapshot: every record was new on this date. The full register is on the dataset page.

… and 36 more records on this date. The full current state of every record is in data.json.