The bill amends section 689.261 of the Florida Statutes to require that residential property listings 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 these estimated taxes be calculated based on the listing price using either current millage rates or a countywide aggregate average millage rate, while explicitly prohibiting the use of the current owner's ad valorem taxes for these calculations. Additionally, it stipulates that the current owner's taxes can only be displayed as historical information and not included in printed materials.

Furthermore, the bill outlines the responsibilities of the Department of Revenue and property appraisers in developing a formula for calculating estimated ad valorem taxes and requires the department to publish this information annually on its website starting December 15, 2026. It 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.