Revenue and taxation; county severance tax; election; apportionment; Oklahoma Tax Commission; effective date.

HB 1146 authorizes Oklahoma counties to levy a severance tax on surface-mined materials (excluding coal) at a maximum rate of $0.10 per ton, requiring voter approval through a special election or initiative petition. The tax revenue must be split equally: 50% for county road and bridge improvements, and 50% for municipal infrastructure projects based on population. Exemptions include limestone used for agriculture, materials sold for hydraulic fracturing, and personal extraction not for profit. Counties must notify taxpayers 60 days before rate changes and cannot impose additional fees on mining operations. The bill takes effect November 1, 2025.