A useful invoice identifies the seller, the customer, the work and the amount owed. It should also make the next step obvious: when payment is due and how to make it. Start with the required information, then add the details your customer needs to recognise and approve the bill.
The useful bits
- Use a unique invoice number and identify both parties clearly.
- Separate the date of the work from the invoice date.
- VAT invoices have additional requirements; use the right format for your situation.
Start with the required details
GOV.UK lists the core information an invoice must contain. Check your template against that list before using it for a real customer.
- A unique invoice reference.
- Your business name, address and contact details, plus the customer’s name and address.
- A description of the goods or services supplied.
- The supply date and the date you issue the invoice.
- The individual charges, any applicable VAT and the total owed.
Use the right business identity
For a sole trader, include your own name alongside any trading name. If you use a business name, include an address where legal documents can be delivered. A limited company should use its full registered company name. A logo alone is not a substitute for these details.
Keep the business identity consistent across your quote, invoice and payment instructions. If your customer knows you by a trading name but sees a different legal name at payment, explain the relationship before they pay. This is especially useful when the person approving the bill did not book the job.
Write line items a customer can recognise
“Work completed” leaves too much to memory. Describe the specific task, location or service period, and show materials separately where that matches the agreement. Include an agreed job or purchase-order reference when the customer uses one.
Make additions visible. If the customer approved an extra task after the original quote, refer to that approval rather than silently increasing the total. Keep the supporting message with the job record.
Illustrative invoice description
Invoice INV-042: repair leaking kitchen tap at the agreed property; labour £90 and replacement parts £25, total £115 before any applicable VAT. Supply date: 12 October. Invoice date: 13 October. These figures illustrate a clear description, not recommended pricing or a complete VAT invoice.
Add the payment instructions and check VAT
State the agreed payment due date and give a clear payment method or link. Make the outstanding balance obvious if a deposit or part payment has already been recorded. An invoice requests payment; a receipt records payment received.
VAT invoices require additional information. If both you and your customer are VAT registered, follow the VAT invoice requirements linked below. Do not add VAT simply because a template contains a VAT box.
Do one final check before sending
Read the invoice from the customer’s point of view: do the name, work, dates and total match what they agreed? Check the recipient and payment details. Preview the document on a phone, where a small total or cropped reference is easy to miss.
Keep the issued copy and record when and where you sent it. If you need to correct it later, keep a clear record of the change rather than leaving two apparently current versions in circulation.
Sources and further reading
Sources checked 28 September 2026. Follow the official guidance for the current rules and how they apply to your business.
