This document discusses internal control, internal check, and internal audit. It defines these terms and outlines their objectives and characteristics. Internal control involves plans and measures to safeguard a business's assets. Internal check involves segregating duties among staff to check each other's work and prevent fraud and errors. Internal audit is an independent review of a company's operations, policies, controls, and accounting processes to evaluate effectiveness and risks. The document provides details on how these tools help management and auditors ensure accuracy, accountability, and effective decision making.