To fully understand the purpose of each type, check out the descriptions below. Information on the parties involved is necessary to obtain the validity of the agreement. No matter how well written your investment contract is, if it doesn`t have the exact content, it still won`t justify its purpose. That is why it is important to know what such a document is. An investment contract is a commercial document containing important data about an investment transaction. A formal and essential contract of enterprise, such as an investment contract, should contain specific information. These fundamental elements include information about the parties involved, the fundamental structure of the investment, the terms of payment, the subject matter of the contract, the date of the agreement and the signature of both parties. .