What does Texas SB4 do?
SB4 mandates a provisional property tax billing system for the 2025 tax year, contingent on a November 2025 constitutional amendment increasing the school district homestead exemption from $100,000 to $140,000. This legislation forces mortgage servicers, tax software vendors, and school districts to adopt dual-calculation workflows immediately to manage escrow liabilities and potential supplemental billing. If the amendment fails, businesses must be prepared to process a second "Supplemental Tax Bill" in December 2025.