Skilful DesignersWhat goes on a UK invoice
HMRC does not have a set template for sole traders who are not VAT registered, but your invoice should clearly show:
- The word Invoice and a unique invoice number
- Your name or trading name, address and contact details
- The client's name and address
- The invoice date and the date the work was done
- A clear description of the work, with amounts
- The total due and the date it must be paid by
- How to pay you
Once you are VAT registered, a full VAT invoice also needs your VAT number, the VAT rate and the VAT amount for each line, and the total excluding and including VAT. Limited companies must add their registered number and registered office address. See GOV.UK: invoices, what they must include.
Payment terms that get you paid
Shorter terms get paid faster. 14 days is reasonable for small jobs; 30 days is the usual maximum for businesses. State the due date as a date, not just "30 days", and agree your terms in writing before the work starts. If an invoice still goes overdue, you can add statutory late payment interest.
Frequently asked questions
What must a UK freelance invoice include?
A unique invoice number, your name or business name and address, the client’s name and address, the invoice date, the date the work was supplied, a description of the work, the amount, the total due and your payment terms. If you are a limited company, add your registered company number and office address. If you are VAT registered, add your VAT number and the VAT rate and amount.
Is this invoice generator free?
Yes, with no sign-up and no watermark. Fill in the form, then use Save as PDF, which opens your browser’s print window. Choose “Save as PDF” as the printer.
Where are my details stored?
Only in your own browser, so the form is filled in next time you visit on the same device. Nothing is sent to us. Use Clear form to remove it.
How should I number my invoices?
Use a simple sequence that never repeats, such as 001, 002, 003, or one with the year, such as 2026-014. HMRC does not require a particular format, only that each number is unique and in order.
Sources
The figures and rules in this tool follow these official sources, checked on 3 November 2026:
Cite this tool
Skilful Designers. “Free Invoice Generator.” https://skillfuldesigners.co.uk/invoice-generator/ (updated 3 November 2026). Built by Sumair Roudani.