In the context of value added tax (VAT), a supplier who has made supplies over the past 12 months exceeding (or there are reasonable grounds for believing that such value will exceed in the next 30 days) the registration limit. A taxable person must account to HM Revenue and Customs (HMRC) for VAT on its taxable supplies.

A supplier may also become a taxable person by registering voluntarily if either:

A taxable person can be an individual, a partnership, a company or other legal entity.

For further information, see Practice note, VAT: overview: By a taxable person in the course of a business.