Modifies provisions relating to personal property taxes

HB 2403 modifies how personal and real property taxes are calculated in Missouri by adjusting the percentage of true value used to assess taxable items. For personal property, the bill lowers the assessment rate from 33.33% to 31% for tax years starting on or after January 1, 2025, while also specifying lower rates for specific categories like agricultural crops and historic vehicles. The legislation updates assessment procedures for real property, including rules for computer-generated valuations that shift the burden of proof to the assessor during disputes. Additionally, it clarifies the process for submitting assessment maintenance plans and outlines how certain costs related to airport properties should be treated when calculating value.