(a) Monetary allowance under Model I.–
(1) The Tax Commissioner shall provide a monetary allowance to a certified service provider in Model I. This allowance shall be in accordance with the terms of the contract between the governing board of the Streamlined Sales and Use Tax Agreement and the certified service provider. The details of this monetary allowance shall be developed and provided through the contract process. The contract shall provide that the allowance be funded entirely from money collected in Model I.