Income tax; exempting certain income from taxable income. Effective date.

SB 383 amends Oklahoma's income tax code to update how the state adjusts federal net operating loss deductions for state tax purposes. It modifies rules for businesses and individuals claiming federal losses, requiring Oklahoma to calculate these deductions based on state-specific rules rather than federal ones for tax years after 2000. The bill specifically changes how losses can be carried forward or back, aligning Oklahoma's approach more closely with federal tax code provisions while maintaining state-specific adjustments. This directly affects taxpayers who utilize federal net operating loss deductions when filing Oklahoma state income taxes. The changes take effect for tax years beginning after the bill's effective date.