Subject to the requirements of this chapter, a registrant shall pay the correct amount of the assessment to the Secretary. Quarterly Payment Requirements. A registrant shall pay the correct amount of the assessment for commercial equine feed sold in the State to the Secretary once each quarter as follows: For feed sold January 1 through March 31, the assessment shall be received by the Secretary by April 30; For feed sold April 1 through June 30, the assessment shall be received by the Secretary by July 30; For feed sold July 1 through September 30, the assessment shall be received by the Secretary by October 30; and For feed sold October 1 through December 31, the assessment shall be received by the Secretary by January 30. Payment Form. A registrant shall pay by check or money order only, accompanied by a completed commercial equine feed assessment form provided by the Secretary.