Income tax; modifying certain income tax rate for certain tax years. Effective date.

SB 293 modifies Oklahoma's individual income tax rates for tax years beginning in 2024. It directly affects all Oklahoma residents and nonresidents who file individual income tax returns. The bill establishes new tax brackets with lower rates, reducing the top marginal rate to 4.75% for single filers and 4.75% for married couples filing jointly (down from previous rates like 5.50% or 6.75%). The change applies to all taxable income above specified thresholds, streamlining the tax computation for 2024 and subsequent years.