Self-Employed Invoice Template UK: Free Download & Guide

If you're self-employed in the UK, invoicing correctly isn't just about looking professional — it's a legal requirement that protects you if payment disputes arise. This guide covers everything you need, plus a free invoice template you can use immediately.

What Is a Self-Employed Invoice?

A self-employed invoice is a document you send to a client requesting payment for work completed. Unlike a business registered for VAT (where special rules apply), most self-employed sole traders issue standard invoices — but they still need to include specific information.

What Must a UK Self-Employed Invoice Include?

According to HMRC, your invoice must include:

1. The word "invoice" — clearly displayed at the top
2. A unique invoice number — sequential numbering (e.g. INV-001, INV-002) helps track payments
3. Your name and address — your full name and business address, even if you work from home
4. The client's name and address — who you're billing
5. Date issued — the date the invoice is created
6. A description of the work — what services or goods are being charged for
7. The amount charged — broken down if there are multiple items
8. The total amount due
9. Payment terms — e.g. "Payment due within 30 days"

If you're VAT-registered, additional fields are required — see our guide on UK VAT invoice requirements.

Do I Need to Register for VAT?

You only need to charge VAT if your taxable turnover exceeds £90,000 in a 12-month period (the 2024/25 threshold). Below that, VAT registration is optional. Most self-employed people starting out won't need to charge VAT.

How to Number Your Invoices

Use a consistent numbering system from day one. Common formats:

• Sequential: INV-001, INV-002, INV-003
• Year-prefixed: 2025-001, 2025-002 (resets each tax year)
• Client-prefixed: SMITH-001 (useful if you want to track per client)

Never reuse an invoice number. If you make a mistake, issue a credit note and create a new invoice.

Payment Terms for Self-Employed UK Invoices

The most common payment terms:

• 30 days — standard for B2B work in the UK
• 14 days — common for smaller amounts
• 7 days — appropriate for quick or digital work
• On receipt — immediate payment expected

UK law (the Late Payment of Commercial Debts Act 1998) gives you the right to charge statutory interest (8% over base rate) on overdue payments from businesses. You don't need to state this on your invoice, but it's worth knowing.

Self-Employed Invoice Template: Free Example

Here's a simple text layout for a UK self-employed invoice:

INVOICE

Invoice Number: INV-001
Date: 06 April 2026
Due Date: 06 May 2026

From:
[Your Full Name]
[Your Address]
[City, Postcode]
[Email / Phone]

To:
[Client Name]
[Client Company]
[Client Address]

Description                              Amount
-------------------------------------------------
[Service description]                   £[amount]
[Additional service]                    £[amount]
-------------------------------------------------
Subtotal                                £[amount]
Total Due                               £[amount]

Payment Terms: 30 days
Bank Details: [Sort code / Account number]
Reference: INV-001

Create Your Invoice Online — Free, No Account Needed

Rather than managing a Word template, you can create a professional UK invoice in minutes using Billdrop — completely free, no account required.

• Fill in your details once, download as PDF
• Professional templates (Classic, Modern, Minimal)
• Supports GBP and other currencies
• Add your logo
• Correct UK invoice fields built in

Create a free invoice →

Common Mistakes to Avoid

1. Missing payment terms — Always state when payment is due. Vague invoices get paid last.

2. No bank details — If you want to be paid by BACS, include your sort code and account number on every invoice.

3. Inconsistent numbering — Skipped or reused numbers make your accounts look unprofessional and can cause issues at tax time.

4. Wrong address — Use your registered business address (or home address if sole trader) consistently across all invoices.

5. No description of work — "Services rendered" isn't good enough. Be specific: "Website design and development — March 2026."

Keeping Records

HMRC requires you to keep copies of all invoices for at least 5 years after the 31 January self-assessment deadline for the relevant tax year. Store them digitally in a folder organised by year, or use invoicing software that does this automatically.

Summary

A UK self-employed invoice must include your name and address, the client's details, a unique number, the date, a description of work, and the amount due. Keep it consistent, professional, and always specify payment terms.

Create your first free invoice →