Internal audit refers to an independent service to evaluate an organisation's internal controls, its corporate practices, processes, and methods.

Internal controls are accounting and auditing processes used in a company's finance department that ensure the integrity of financial reporting and regulatory compliance.

Internal financial control refers to the systems, processes, and procedures implemented by an organization to ensure the accuracy, reliability, and integrity of its financial reporting and safeguard its assets against fraud, errors, and mismanagement.

A forensic audit is an analysis and review of the financial records of a company or person to extract facts, which can be used in a court of law.