TX SB479

Increases the margin of error the comptroller may use when determining if a school district's local property value is valid from 5 percent to 10 percent

Lowers the threshold for "eligible school district" status from 90 percent to 80 percent of the lower limit of the margin of error for aggregate local property values sampled by the comptroller

Explicitly includes property value reductions under Section 23.01(e), Tax Code (relating to market value determinations) in the calculation of taxable value deductions for school districts

Applies to property value studies conducted for tax years beginning on or after January 1, 2026

Takes effect immediately with a two-thirds vote of both legislative chambers, otherwise takes effect September 1, 2025