Revenue and taxation; vehicle excise tax; transfer vehicle ownership; effective date.

HB 1604 updates Oklahoma's vehicle excise tax rules. It changes tax rates for standard cars (based on value), sets a $5 minimum tax for off-road vehicles like ATVs and motorcycles, and adds a $10 tax for heavy trucks, cargo trailers, and frac tanks. The bill exempts family transfers (e.g., parent-to-child) and agricultural vehicles, and allows tax credits for stolen or defective new vehicles. Commercial vehicles will pay this tax instead of sales tax, streamlining payments for businesses.