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

SB 322 modifies Oklahoma's individual income tax rates for tax years beginning on or after January 1, 2024. It lowers the top marginal tax rate to 4.75% for single filers (from 5.50%) and adjusts corresponding brackets for married filers filing jointly. The bill affects all Oklahoma residents and nonresidents who file individual income tax returns. This change is contingent on a determination by the State Board of Equalization, as specified in the legislation.