Seal of Oklahoma Oklahoma

Oklahoma has a constitutional tax and expenditure limit under Article X Section 23 under the State Balanced Budget Amendment. Enacted in 1985, it restricts appropriations to 95% of estimated revenues for the forthcoming and appropriations growth may not exceed 12% plus inflation. Revenues in excess of the appropriations limitation must be deposited in a budget reserve fund. The budget reserve fund is allowed to be used when revenues fall and is contingent upon a declaration of emergency and a supermajority legislative vote.

Oklahoma also has stringent constitutional requirements on raising taxes, Article V Section 33. This requires that any bill intending to raise revenue must either be approved by the majority of voters or a 3/4 supermajority in the legislature.

 
The base year represents the year the hypothetical Taxpayer's Bill of Rights (TABOR) would have been enacted. Selecting a base year changes how the state’s TABOR is calculated because the annual growth rates of inflation and population change depending on when TABOR is enacted.
  • Year Inflation-adjusted Actual Spending
    1992 9,523,765,959
    1993 9,594,548,515
    1994 9,620,003,732
    1995 9,608,153,340
    1996 10,045,865,310
    1997 10,543,514,020
    1998 11,058,420,820
    1999 11,391,655,740
    2000 12,646,092,230
    2001 13,437,751,240
    2002 13,948,021,790
    2003 13,066,629,680
    2004 12,316,935,850
    2005 12,107,639,160
    2006 15,171,843,810
    2007 13,313,042,200
    2008 15,225,231,770
    2009 15,564,814,720
    2010 14,766,581,470
    2011 16,971,825,240
    2012 16,950,827,380
    2013 17,903,002,000
    2014 17,657,078,460
    2015 17,908,639,220
    2016 17,541,386,430
    2017 18,654,960,630
    2018 17,224,375,030
    2019 17,577,880,210
    2020 17,785,410,820
    2021 18,081,130,450
    2022 18,960,000,000
*All spending figures are in inflation-adjusted 2022 dollars.