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 9,577,200,000
    1993 9,620,000,000
    1994 9,626,750,000
    1995 9,536,830,000
    1996 9,884,990,000
    1997 10,299,330,000
    1998 10,753,010,000
    1999 10,955,710,000
    2000 12,067,500,000
    2001 12,731,200,000
    2002 13,204,800,000
    2003 12,367,110,000
    2004 11,608,010,000
    2005 11,396,770,000
    2006 14,131,200,000
    2007 12,420,000,000
    2008 14,039,280,000
    2009 14,431,670,000
    2010 13,706,420,000
    2011 15,608,950,000
    2012 15,604,170,000
    2013 16,402,470,000
    2014 16,108,020,000
    2015 16,367,440,000
    2016 16,045,560,000
    2017 17,040,560,000
    2018 15,601,410,000
    2019 15,836,800,000
    2020 16,037,000,000
*All spending figures are in inflation-adjusted 2020 dollars.