As of 13 August 2026, AI can create a UK business invoice.

What to actually do

1. Hand it to a person

   The route this page recommends

   A person who owns the outcome does this end to end, worth it when the failure is dear.

2. Use a tool built for this

   Second choice

3. Do it yourself

   The distant third

   A chat interface, chat-fluent skill, and roughly 15 minutes until you can act on the result.

   How to actually do it

   1. Open your current price list, sales order or agreed quote and gather the exact items, quantities, unit prices, discounts and payment terms for this sale.
   2. Gather your legal business name, address, company number if applicable, VAT registration number if applicable, customer billing details, invoice number, invoice date and payment instructions.
   3. Check your VAT status and the VAT treatment of each item against your accounting records and current GOV.UK guidance, without asking the AI to decide an unclear treatment.
   4. Paste the prompt and the gathered details into ChatGPT, Claude or Gemini, replacing every bracketed slot and leaving no sensitive detail that the service does not need.
   5. Copy the generated invoice into your document or accounting system, then compare every name, address, reference, line calculation, VAT amount, total, due date and bank detail with the source records.
   6. Send the approved invoice through your normal business channel and record the invoice number, date, amount and customer in your bookkeeping system.

   Prompt

   Create a UK business invoice from the information below. Use only the facts I provide and do not invent, infer or fill gaps. If a required or important detail is missing, mark it as [MISSING] and list the missing detail after the invoice.
   
   Business details:
   - Legal business name: [business name]
   - Trading address: [address]
   - Company number, if applicable: [company number]
   - VAT registration number, if VAT registered: [VAT number]
   - Contact details: [email or phone]
   
   Customer details:
   - Customer or legal business name: [customer name]
   - Billing address: [customer address]
   - Customer VAT number, if relevant: [customer VAT number]
   
   Invoice details:
   - Invoice number: [invoice number]
   - Invoice date: [date]
   - Payment due date or payment terms: [terms]
   - Currency: GBP unless I state otherwise
   - Items or services supplied, with quantity, unit price and any agreed discount: [items]
   - VAT status and VAT rate for each item, if known: [VAT details]
   - Payment instructions: [bank or payment details]
   - Purchase order or reference: [reference, if any]
   
   Produce a clean, copyable invoice with a line-item table, subtotal, VAT shown separately where applicable, total due, payment terms and payment instructions. Show calculations clearly. Do not decide whether VAT applies or which rate is correct. If the VAT treatment is missing, unclear or unusual, flag it for checking against current GOV.UK guidance or with an accountant. After the invoice, provide a short factual checklist of fields I should verify before sending. Do not describe this as legal or tax advice.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.