IAS 18, or International Accounting Standard 18, is an IFRS, or International Financial Reporting Standard, that outlines principles for the recognition and measurement of revenue from the sale of goods and services. It was issued in 1983 and has been regularly updated to reflect current accounting practices. It is applicable to any public or private sector entity that engages in sales transactions of any type. The standard aims to create uniformity in the way revenue is reported across industries, while addressing the complexities that come with recognizing and reporting on these types of transactions. It defines the core elements of revenue and explains the accounting treatments specific to individual transactions. The primary objective of IAS 18 is to ensure that revenue is recognized in the financial statements only when it is earned and can be measured reliably. This applies to all types of sales transactions, ensuring that investors and business owners have the most accurate information when making decisions about the financial health of their operations.