Sales tax: exemptions; sunset date on exemption for firearm safety devices; extend. Amends sec. 4ll of 1933 PA 167 (MCL 205.54ll).

HB 4025 extends Michigan's sales tax exemption for firearm safety devices until December 31, 2024. It defines "firearm safety devices" as equipment (like gun safes, lockboxes, or trigger locks) designed to prevent unauthorized access or operation of firearms, but excludes display cabinets. Retail sellers must provide written notices to purchasers and post conspicuous signage at points of sale about the tax exemption. The bill also requires the state to annually compensate the school aid fund for any revenue lost due to this exemption.