According to the Legislative Budget Board (LBB), SB 4 would have a significant negative fiscal impact on the state, with an estimated net cost of approximately $2.74 billion to General Revenue-related funds during the 2026–27 biennium. The bill itself does not appropriate funds but provides the statutory authority necessary for future appropriations to implement its provisions. Over the five-year projection period, the LBB estimates recurring General Revenue costs of approximately $1.32 billion in fiscal year 2026, $1.42 billion in fiscal year 2027, and just over $1.0 billion annually through fiscal year 2030.
The primary cost driver is the increase in the mandatory school district residence homestead exemption from $100,000 to $140,000, contingent upon voter approval of SJR 2. Because the larger exemption reduces school district property tax collections, the state would assume a greater share of public education funding by providing additional Foundation School Program (FSP) aid and hold-harmless payments to offset districts' losses in both maintenance and operations (M&O) and interest and sinking (I&S) revenue. The fiscal note also projects a substantial reduction in recapture ("Robin Hood") payments from property-wealthy school districts, further increasing the state's funding obligation.
According to the LBB, implementation would also result in relatively modest administrative costs for the Texas Education Agency, including the addition of one full-time Financial Analyst III position, along with programming and technology upgrades needed to implement the revised school finance calculations. Administrative costs are estimated at approximately $268,000 in fiscal year 2026, $550,000 in fiscal year 2027, and about $112,000 annually thereafter, with technology costs of roughly $146,000 in fiscal year 2026 and $438,000 in fiscal year 2027. The fiscal impacts apply primarily to the state and to school districts through changes in state aid and local property tax collections.