If a contract has designated the use of subcontractors, prompt payment to those subcontractors may apply. In accordance with MTS, State and Federal requirements, Prime Contractors should pay subcontractors no later than seven (7) days from receipt of payment from MTS. To ensure compliance, MTS requires the following Prompt Payment Certification Form to be completed. Prime Contractors must submit the Prompt Payment Certification Form within 14 days of receipt of payment from MTS.