What a full UK VAT invoice must show, VAT Regulations 1995 reg 14

A "VAT invoice" in the UK is a defined document, not a label a business can attach to any bill. Regulation 14 of the VAT Regulations 1995^[1] lists the particulars a full VAT invoice must contain, and only a VAT-registered supplier may issue one. The annotated invoice above labels each reg 14 field on a worked example so a business can check its own template against the regulation line by line. HMRC restates the same list in plain English in VAT Notice 700 §16.3^[3].

The supplier-and-document block comes first: a sequential invoice number that is unique and follows on from the last (gaps and resets are a red flag), the time of supply (the tax point), the date of issue where it differs from the tax point, and the supplier's name, address, and VAT registration number. The VAT number is the field that makes the document a VAT invoice at all — without it a buyer cannot recover the VAT. Then the customer's name and address, identifying who the supply is made to.

The commercial detail sits in the line items. For each description of goods or services the invoice must show a description sufficient to identify what was supplied and, for each, the quantity, the rate of VAT, and the amount payable excluding VAT in sterling. The unit price must be shown where the supply is by reference to a unit. The totals block then carries the total amount payable excluding VAT, the rate of any cash discount offered, and the total VAT payable, expressed in sterling. Where different items carry different VAT rates (standard 20%, reduced 5%, zero-rated, exempt), the rate and value must be shown for each rate separately.

Two thresholds change the picture. For supplies of £250 or less (including VAT), a business may issue a simplified VAT invoice^[2] with fewer fields — supplier name, address and VAT number, the time of supply, a description, and, for each rate, the gross amount and the VAT rate. And a modified invoice can show VAT-inclusive line values for supplies over £250 by agreement. The consequence of getting a full invoice wrong is concrete: a customer relying on a non-compliant invoice to reclaim input VAT is exposed if HMRC disallows it. Note these are the UK rules under the VAT Regulations 1995; post-Brexit they are independent of EU VAT invoicing and may diverge over time.