Mo. Rev. Stat. § 135.115
The right to receive the tax credits described in section 135.110 shall vest in the taxpayer upon commencement of operations of the revenue-producing enterprise, but the taxpayer shall waive such vested right for any given year in which the taxpayer fails to meet the terms and conditions of sections 135.100 to 135.150. Representations made by the department of economic development and relied upon in good faith by the taxpayer shall be binding upon the state of Missouri to the extent such representations are consistent with the provisions of this chapter. The provisions of this section shall apply to all revenue-producing enterprises which are eligible for incentives pursuant to this section and which commenced operations on or after January 1, 1990, to the extent such incentives do not exceed the ten-year limitation set forth in subsection 1 of section 135.110.
§ 135.115, RSMo