Annual reports are financial documents written by the according or financial department of a business once per year. This type of business document is written for investors and includes details of revenues and expenses, plus the total assets and liabilities of the company . other sections include operational budgets, pradictions for the upcoming fnancial year and what changes the compamy seeks to make in the future to avoid financial downfalls. Not all companies create annual reports, but some are required to do so. including those with publicly traded stock.