The Annual Tax on Enveloped Dwellings (ATED) is a UK tax applied to residential properties worth over £500,000 that are owned by companies, partnerships with corporate partners, or collective investment schemes. This tax aims to prevent the use of corporate structures to avoid certain taxes on high value residential properties. If your company owns such property, understanding ATED rules is important to staying compliant and avoiding penalties. In this article, we explain who must file, when to file, how the tax is calculated, and what reliefs and exemptions might be available.