Revenue and taxation; income tax; rate; effective date.

HB 1267 adjusts Oklahoma's individual income tax rates for tax years beginning in 2024. It lowers the top marginal tax rate from 5.50% to 4.75% for most taxpayers (single filers and married couples filing jointly), creating new tax brackets starting at 0.25% for lower income levels. The bill eliminates deductions for federal income taxes when calculating Oklahoma taxable income. These changes affect all Oklahoma residents and nonresidents filing state income tax returns for 2024 and subsequent years, with the top rate reduction contingent on a State Board of Equalization determination.