the service agreement outlines the relationship between your company and the provider. the section that defines the payment terms is important and should include how much, when, and how the provider will receive compensation. typically, the provider will require a deposit to secure the services, and include a balloon payment or series of payments over the course of the service. this itemized statement should be included as an exhibit to the service agreement. the amendment section details how the parties can change the agreement if the circumstances (i.e. typically, written consent of both parties is required to amend the agreement.