Algorithmic rent price-fixing ban
Illinois SB 343 — Ban on Algorithmic Residential Rental Price-Fixing
Illinois · IL SB343 (104th General Assembly, 2025-2026)
- Status
- Expired
- Applies to
- Landlords and providers of rent-setting algorithm / pricing-coordination software and services operating in Illinois.
- Enforced by
- Illinois Attorney General (Illinois Antitrust Act enforcement)
Would amend the Illinois Antitrust Act to ban landlords from using shared rent-setting algorithms or third-party pricing software (such as RealPage) to coordinate residential rental prices. Targets "algorithmic" or "AI-enabled" rent price-fixing, where competing landlords feed data into a common service that recommends prices, indirectly coordinating rents across the market. Prohibits fixing, controlling, or maintaining rental pricing or terms for residential units, including through any service or product that involves price coordination.
Who is protected: Illinois residential renters subject to algorithmically coordinated rent pricing.
Legal detail
Amends the Illinois Antitrust Act to make it a violation to engage in price coordination — or to use, subscribe to, or contract with a service that involves price coordination — for residential rental units in Illinois, including through the sale, licensure, or provision of any service or product (e.g., a shared rent-setting algorithm) that coordinates pricing across competing landlords. Responds to the RealPage algorithmic rent-pricing controversy. Cleared both chambers 2026-06-01 (House 75-34-1; Senate 34-21-0; Senate concurrence 51-6-0); awaiting transmittal to and action by the Governor as of 2026-06-25 — not yet enacted.
Key facts
| Jurisdiction | Illinois |
|---|---|
| Level | State |
| Citation | IL SB343 (104th General Assembly, 2025-2026) |
| Penalties | As provided under the Illinois Antitrust Act. |
| Topics | housing and credit decisions · automated decision-making · consumer protection |
| Bill text | Illinois General Assembly — SB0343 Bill Status (104th GA) |
More AI rules in Illinois
- Illinois Children's Social Media Safety Act — algorithmic recommendations ban for minors · Enacted (not yet in effect)
- Illinois SB 3114 — Transparency in Downcoding Act · Enacted (not yet in effect)
- AI Safety Measures Act (frontier model audits) · Enacted (not yet in effect)
- Illinois HB 3851 — deepfake cyberbullying in schools (2026) · In effect
- Illinois data center tax-incentive pause (DCEO, July 2026) · In effect
- IL AV local-preemption (2017) · In effect
Related housing and credit decisions rules elsewhere
- Connecticut algorithmic rent ban — HB 8002 (eff. Jan 1, 2026) · In effect
- San Diego algorithmic rent price-fixing ban (Ord. O-21955, May 2025) · In effect
- Minneapolis algorithmic rent ban (Ord. 2025-010, eff. Mar 1, 2026) · In effect
- Seattle algorithmic rent-fixing ban (Ord. 127241 / SMC 7.34, July 2025) · In effect
- NJ Forbidding the Algorithmic Inflation of Rent (FAIR) Act · Enacted (not yet in effect)
- Hoboken Algorithmic Rent-Fixing Ban · In effect
See something wrong or out of date? Submit a correction. Every entry must carry a verifiable source.