SB 643 - This act creates a corporate franchise, income, financial institutions, and bridge, express, and utility company tax credit. The tax credit shall be equal to either: 1) the lesser of fifty percent of the eligible expense incurred by a producer to achieve Managed Environment Livestock Operation accreditation or fifty thousand dollars; or 2) the lesser of seventy-five percent of the eligible expense incurred by a producer to meet preferred environmental practices or seventy-five thousand dollars. The tax credit provided under this act is a fully transferable, non-refundable tax credit. To the extent tax credits issued under this act exceed a taxpayers liability such excess amount may be carried back three years or forward five years until fully claimed. The cumulative amount of tax credits issued, by the Missouri agriculture and small business development authority, to all taxpayers in any fiscal year shall not exceed three million dollars. In any fiscal year, only when less than ninety percent of the tax credits are issued for eligible expenses incurred to achieve Managed Environment Livestock Operation accreditation by March first, more than ten percent of the annually available tax credits may be issued for eligible expenses incurred in meeting preferred environmental practices. Similarly, if less than 10% of the tax credits have been used for preferred environmental practices by March 1st, the remainder may be used for MELO accreditation projects. The tax credit program shall expire on June 30, 2012. This act is similar to HB 881 (2007). JASON ZAMKUS