The General Revenue (GR) Fund is the principal funding source for most Oklahoma government operations. Any revenue that is not restricted for a specific purpose flows into the general fund. The Legislature may direct money out of this fund for any legal purpose of the government.
Total General Revenue collections in FY 2018 were $5.854 billion, which was $810 million more than in FY 2017 . The biggest contributors to the General Revenue Fund were the sales tax ($2.136 billion, 36.4 percent) and individual income tax ($2.083 billion, 35.6 percent). Dozens of smaller taxes and fees made up the rest.
The Legislature can budget up to 95 percent of the estimated General Revenue for the coming year (see Revenue Estimates). For Fiscal Year 2020, 80 percent of the money budgeted by the Legislature comes from General Revenue.