How to Invoice as a Sole Trader (UK Guide 2026)

As a sole trader, invoicing is how you get paid and how you prove your income to HMRC. The good news is the rules are simple — you don't need to be VAT-registered or use expensive software to invoice professionally. Here's everything a UK sole trader needs to know.

What a sole trader invoice must include

Even as a sole trader, your invoice should look professional and contain the essentials. There's no legal requirement to register a company — you can invoice under your own name or a trading name.

• Your name (and trading name, if you use one)
• Your address and contact details
• The word 'Invoice' and a unique invoice number
• The client's name and address
• The date and payment due date
• A clear description of the work, with amounts
• The total due and how to pay you

Do sole traders charge VAT?

Only if you're VAT-registered. You must register for VAT once your turnover exceeds £90,000 (2024/25 threshold); below that it's optional. Most sole traders under the threshold don't charge VAT — and if you're not registered, you must not show or charge VAT on your invoices.

Record-keeping for Self Assessment

As a sole trader you report your income through Self Assessment each year. Keep a copy of every invoice you send — HMRC requires you to retain business records for at least five years after the 31 January submission deadline for that tax year. Numbered, dated PDF invoices make totalling your income and completing your return straightforward.

Getting paid on time

1. 1Agree your price and payment terms before starting work.
2. 2Send the invoice promptly when the job is done.
3. 3Use short terms like Net 7 or Net 14.
4. 4Include your bank details so the client can pay instantly.
5. 5Follow up politely if payment is late.

For more, see our UK VAT invoice guide and the free UK invoice generator.