A UK invoice needs a unique number, your and your customer's details, what you're charging for, the dates, and the amounts.
The checklist (GOV.UK)
| Must include | Notes |
|---|---|
| A unique identification number | Number invoices in sequence, e.g. INV-001 |
| Your name, any business name, address and contact details | If you use a business name, an address where legal documents can be delivered |
| The customer's name and address | |
| A clear description of what you're charging for | |
| The supply date | When the goods or service were provided |
| The invoice date | |
| The amounts being charged | Plus VAT if applicable |
| The total amount owed |
VAT-registered?
If you and your customer are both VAT registered, you must use VAT invoices, which include more information, such as your VAT number.
Good practice
- State your payment terms (e.g. 30 days) and bank details.
- Mention late payment interest for business customers.
FAQs
Do sole traders need invoice numbers?
Yes: every invoice needs a unique identification number.
Do I need to show VAT if I'm not VAT registered?
No. Only VAT-registered businesses charge VAT and issue VAT invoices.
What payment terms should I use?
Whatever you agree with the customer; if no date is agreed, a business payment is late after 30 days for statutory interest.
Plan it in minutes
Its printable invoice fills itself from your invoice log, with your details, bank details and VAT on or off.
