How to Invoice When You're Self-Employed in the UK

Do Self-Employed People Need to Invoice?

Yes. If you are self-employed — whether you call yourself a sole trader, freelancer, or independent contractor — you should issue an invoice for every piece of paid work. Invoices serve three purposes:

1. Payment — they formally request payment from your client
2. Record-keeping — they create a paper trail for your Self Assessment tax return
3. Professionalism — they signal that you take your work seriously

Even if a client pays you informally (via bank transfer after a text message, for example), having a matching invoice protects both parties in case of a dispute.

What to Include on a Self-Employed Invoice

A sole trader invoice in the UK should contain:

1. Your full name — or your trading name if you use one
2. Your address — your registered business address or home address
3. Your contact details — email and phone number
4. The client's name and address
5. A unique invoice number — sequential, with no gaps (e.g. INV-001, INV-002)
6. The invoice date
7. A clear description of the work — specific enough that the client knows what they are paying for
8. The amount due — broken down by line item with quantities, rates, and totals
9. Payment terms — when payment is due (e.g. "Net 14", "Due within 30 days")
10. Your bank details — sort code, account number, and the account name

VAT: When You Need It, When You Don't

The key question is whether your taxable turnover exceeds the VAT registration threshold of £90,000.

What a Non-VAT Invoice Looks Like

If you are not VAT-registered, your invoice is simpler. You just show the total amount due without any tax breakdown. Do not write "0% VAT" or "VAT exempt" unless you are registered and the specific supply is exempt or zero-rated.

Self-Employed Invoice vs Limited Company Invoice

The main differences between a sole trader invoice and a limited company invoice are:

As a sole trader, your invoice is simpler because you have fewer legal requirements. The trade-off is that you are personally liable for the debts of the business.

Tips for Self-Employed Invoicing

• Invoice promptly — send the invoice the same day you complete the work or deliver the goods
• Use consistent numbering — never reuse or skip invoice numbers
• Set clear payment terms — "Due within 14 days" is clearer than "Payment expected soon"
• Chase politely — if payment is overdue, send a reminder at 7 days and again at 14 days past the due date
• Keep digital copies — store PDFs of every invoice in a folder organised by tax year (e.g. 2025-26/invoices/)

Create a Self-Employed Invoice

Our UK invoice generator is designed for sole traders and freelancers. It includes all the fields HMRC expects and handles VAT calculation automatically if you need it.