How to Invoice as a Self-Employed Tradesman in the UK

Do You Need to Send Invoices?

Yes — if you're self-employed and charging customers for work, you need to provide an invoice or receipt. This applies whether you're a sole trader, in a partnership, or operating through a limited company.

HMRC requires you to keep records of all your invoices for at least 5 years from the 31 January submission deadline. This means keeping copies of what you've sent, not just the payments you've received.

What Must a UK Invoice Include?

For non-VAT registered sole traders, HMRC requires your invoice to include:

• A unique, sequential invoice number (e.g. INV-2026-001)
• Your name and business name (if different)
• Your business address
• The customer's name and address
• A clear description of the work completed
• The date the goods or services were supplied
• The amount being charged
• The date of the invoice

If you are VAT registered, additional requirements apply — see the VAT section below.

What a Good Tradesman Invoice Looks Like

Here's an example of a correctly structured invoice for a self-employed plumber:

VAT on Tradesman Invoices

You only need to charge VAT if your business is VAT registered. You must register for VAT if your taxable turnover exceeds £90,000 in a 12-month period (2026 threshold — check gov.uk for the current figure).

If you are VAT registered, your invoices must also include:

• Your VAT registration number (format: GB123456789)
• The rate of VAT charged (usually 20% standard rate for trade work)
• The VAT amount shown separately
• The total amount excluding VAT

Most domestic repair and maintenance work is charged at the standard rate of 20%. Some work qualifies for the reduced 5% rate — for example, installing energy-saving materials in residential properties. If in doubt, check with HMRC or your accountant.

Setting Payment Terms

Your invoice should state clearly when payment is due. Common terms for tradespeople:

• Due on receipt — payment expected immediately
• 14 days — the most common for domestic work
• 30 days — standard for commercial customers

Whatever terms you set, stick to them and follow up promptly when they're exceeded. The longer you leave a late payment, the harder it becomes to collect.

The Biggest Mistake Tradespeople Make with Invoicing

Not sending the invoice quickly enough. Research consistently shows that the faster you invoice after completing a job, the faster you get paid. Invoices sent the same day as the work are paid significantly faster than those sent a week later.

The second biggest mistake is not following up on late payments. Most customers who don't pay on time aren't trying to avoid paying — they've just forgotten, or your invoice is buried in their inbox. A polite, professional reminder at 7 days overdue resolves the majority of late payment situations.

How to Invoice Faster as a Tradesman

The best approach is to invoice immediately after finishing a job — before you've even left the driveway. Here's a simple process:

1. Set up a template with your details saved Your business name, address, logo and bank details should never need re-entering. Set them up once.
2. Invoice on site or immediately after The job is fresh in your mind and the customer is still thinking about it. Don't leave it until the evening.
3. Email it directly to the customer Don't just WhatsApp a photo of a handwritten invoice. A PDF emailed from your business name looks professional and is easier for your customer to pay and file.
4. Follow up at 7 days if unpaid A short, professional email — "just checking you received the invoice for the work completed last week" — resolves most late payments immediately.
5. Keep records for HMRC Save copies of every invoice. A simple spreadsheet or accountancy export works fine for HMRC's requirements.

Making Tax Digital for Tradespeople

From April 2026, Making Tax Digital for Income Tax Self Assessment (MTD ITSA) becomes mandatory for self-employed people with income over £50,000, with the threshold dropping to £30,000 from April 2027. This means you'll need to keep digital records and submit quarterly updates to HMRC electronically.

If your income is near these thresholds, it's worth getting your invoicing digital now rather than scrambling to comply later. Any invoicing tool you use should be able to export your data in a format your accountant can use.