• Instructions for Completing a Contract for Professional Services. CONTRACTOR shall provide the City with a written and complete budget outlining all planned revenue sources and expenditures.Maricopa County Vendor Express Payment Program. This is an electronic funds transfer (EFT) process. Template. Reference. (c) A payment bond on the part of the contractor for 100 percent of the contract price. Maricopa County Vendor Express Payment Program. This is an electronic funds transfer (EFT) process.