Generally Accepted Accounting Principles (GAAP) are a common set of accounting rules and standards that dictate how financial statements are prepared. Public companies, nonprofit organizations, and government entities are required to prepare financial statements in accordance with GAAP. These guidelines were developed over time by the Financial Accounting Standards Board (FASB), and the American Institute of Certified Public Accountants (AICPA). Principles covered by GAAPGAAP encompasses a wide range of accounting practices and philosophies. Some key areas covered by GAAP include: Recognition: How assets, liabilities, revenues, and expenses are recognized on financial statements Measurement: How profits and losses are measured and reported on financial statements Presentation: How information needs to be presented on financial statements Disclosure: What information needs to be shared on financial statements Goals of GAAPThe purpose of GAAP is to create a uniform standard for financial reporting. When financial information is made available to the public, it should serve the purpose of helping investors make informed decisions as to where to put their money. Similarly, it should enable lenders to properly assess the financial condition of companies looking to borrow money. When applied to non-profits and government organizations, the goal of GAAP is to ensure complete transparency on the part of the reporting entities. Information provided under GAAP needs to be not only clear, comprehensive, and easily understood, but verifiable by auditors and other outside parties. Importance of GAAPWithout GAAP, companies wouldn't be held to a strict set of standards, which means they'd have a lot more leeway in deciding what information they choose to share or keep hidden. GAAP, therefore, serves the very-important function of making sure companies and organizations can't "cheat" on their financial reporting. GAAP allows investors to easily evaluate companies simply by reviewing their financial statements. If an investor is torn between two companies in the same industry, that investor can compare their respective statements to determine which is doing a better job at generating revenue and managing cash flow. However, this wouldn't be possible if companies were allowed to pick and choose what financial information to present. When applied to government entities, GAAP helps taxpayers understand how their tax dollars are being spent. GAAP also helps companies gain key insights into their own practices and performance. Furthermore, GAAP minimizes the risk of erroneous financial reporting by having numerous checks and safeguards in place. The information provided in GAAP-compliant financial statements can therefore generally be regarded as reliable and accurate. The $15,834 Social Security bonus most retirees completely overlook If you're like most Americans, you're a few years (or more) behind on your retirement savings. But a handful of little-known "Social Security secrets" could help ensure a boost in your retirement income. For example: one easy trick could pay you as much as $15,834 more... each year! Once you learn how to maximize your Social Security benefits, we think you could retire confidently with the peace of mind we're all after. Simply click here to discover how to learn more about these strategies. This article is part of The Motley Fool's Knowledge Center, which was created based on the collected wisdom of a fantastic community of investors. We'd love to hear your questions, thoughts, and opinions on the Knowledge Center, in general, or this page, in particular. Your input will help us help the world invest, better! Email us at knowledgecenter@fool.com. Thanks -- and Fool on!