A retainer agreement may contain other contractual provisions relating to the provision of services, or the parties may conclude additional contracts defining the other terms of their employment relationship. Retainer fees can be paid at a fixed rate, negotiated in advance or at a variable hourly rate, depending on the nature of the resonater and also the practice of maintaining the profession. From a contractor`s perspective, the main benefit of signing a retainer agreement is the guaranteed income it offers. Many freelancers struggle with varying incomes, the more customers offer you retainers, the more you rely on you to get a certain amount of money. In any case, it is better to reduce agreements to the written form each time.