Mo. Rev. Stat. § 135.411: Investment to remain in business for five years — failure to comply, repayment of tax credit.

The amount of the qualified investment made in a Missouri small business must remain in that business for a minimum of five years. Withdrawal of the investment prior to the minimum five-year period shall result in revocation of the tax credit, and repayment of any amounts of the tax credit already applied against the investor's state tax liability.