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 does Colorado SB 24-205 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— because these dates move, often more than once, and a date with no instrument behind it cannot be told apart from a superseded one. Colorado's SB 24-205 was enacted with duties from 2026-02-01, moved to 2026-06-30 by SB 25B-004, and its part 17 is repealed and reenacted with amendments from 2027-01-01 by SB 26-189; the EU AI Act's Annex III high-risk date was moved from 2026-08-02 to 2027-12-02 by Regulation (EU)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. Each record names the instrument whose own words state its date, and says which later instrument replaced it.

Change dates4

Tracked since2026-09-08

Last change2026-10-07

Since the initial snapshot of 2026-09-08, this register has changed on 3 further dates. 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.

2026-10-07 — 4 records added or updated

SENATE BILL 25B-004 · Colorado · SECTION 1Now states — Effective date: June 30, 2026. (State after this change; the previous value was not stored.)
S.B. 332 · Utah · Section 2Now states — Effective date: 03/25/2025. (State after this change; the previous value was not stored.)
SENATE BILL 25B-004 · Colorado · SECTION 4Now states — Effective date: at 12:01 a.m. on the day following the expiration of the ninety-day period afte…. (State after this change; the previous value was not stored.)
S.B. No. 815 · Texas · SECTION 4Now states — Effective date: January 1, 2026. (State after this change; the previous value was not stored.)

2026-10-05 — 2 records added or updated

Regulation (EU) 2026/1744 · European Union · Article 1, point (40)(b)(i)Now states — Short title: Digital Omnibus on AI; Effective date: 2 December 2027. (State after this change; the previous value was not stored.)
Regulation (EU) 2026/1744 · European Union · Article 1, point (40)(b)(ii)Now states — Short title: Digital Omnibus on AI; Effective date: 2 August 2028. (State after this change; the previous value was not stored.)

2026-09-14 — 9 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.)

2026-09-08 — Initial snapshot — 54 records

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

… and 34 more records on this date. The full current state of every record is in data.json.