A Consultant Retainer Contract is an agreement that allows a consultant to secure the regular payment of fees by a client over a certain period of time. The contract outlines the scope of work, terms and conditions, and payment timelines for all services provided. It also ensures that both parties are on the same page when it comes to expectations and roles/responsibilities throughout the length of the contract. Such contracts are often used for long-term projects or for repeatable services that require expert input from the consultant – ensuring consistency and quality of services delivered to the client.