Most states require that every corporation file an annual report each year. Many states make this a biannual requirement. Fortunately, this is a simple, often one-page form that is sent to the corporation by the secretary of state, and may merely need to be signed. It contains such information as the federal tax identification number, officers' and directors' names and addresses, the registered agent’s name, and the address of the registered office. It must be signed and returned with the required fee by the date specified by the state. If this is not done, then the corporation may be dissolved after notice is given. Many states allow some corporate information (such as the registered office and agent) to be changed at this time without additional fees to the corporation. The corporation should be aware of this fact in order to avoid incurring needless expenses.