The bill amends section 689.261 of the Florida Statutes to require that listings of residential properties on public-facing online platforms include estimated ad valorem taxes. It defines "listing platform" as any online real estate listing service and "property" as residential real property in Florida. The bill mandates that if estimated taxes are calculated using a tax estimator, the current owner's ad valorem taxes cannot be used in the calculation. Instead, the estimated taxes must reflect what would be due based on the listing price and current millage rates. Additionally, the current owner's taxes can only be displayed as historical information and not included in printed materials.

Furthermore, the Department of Revenue is tasked with developing a formula for calculating estimated ad valorem taxes and must publish this information, along with the countywide aggregate average millage rate, on its website starting December 15, 2026. The bill also provides liability protection for listing platforms regarding the accuracy of the estimated taxes and allows the Department of Revenue to adopt rules for implementation. The act is set to take effect on February 1, 2027.