Customer Contracts are written, binding agreements that are made between a customer (buyer) and a seller (supplier) which commits parties to the agreement to their rights and responsibilities. In business valuation, Customer Contracts qualify as intangible assets because they can be recognised, separated from tangible assets and their associated economic value can be reliably estimated. Business valuation analysts estimate the fair market value of cooperative agreements by applying techniques under the cost, market, and income methods. Even though there are oral contracts, only written customer contracts qualify as an intangible asset which can be valued because written contracts can be enforced.