What to put on an invoice as a sole trader

Every sole trader invoice needs a clear set of basics, including your business details, your customer details, a unique invoice number, and a breakdown of the work you did. Getting these essentials right from the start means fewer questions from customers and a much smoother path to getting your money.

The basic details your invoice must display clearly

When you finish a job, your customer needs to know straight away who the bill is from and where to send the funds. Put your trading name, your business address, and a contact phone number or email address right at the top of the page. If you trade as a limited company, you have extra rules, but as a sole trader you should also include your own personal name alongside your trading name so people know who you are.

You also need to show your customer details clearly on the bill. Include their full name, the address where you carried out the work, and a direct email or phone number. This prevents any confusion if the bill goes to a head office or a partner who was not on site.

Using a clean format keeps things simple for both sides. If you want to speed up how you issue these documents after a job, you can look at simple invoicing software that puts your details in the right place every time.

• Your business name and any trading name you use
• Your contact phone number and email address
• Your correspondence address or registered office
• The customer name and the full site address of the job

Numbers and dates that stop payment delays

Every invoice you send needs a unique invoice number so you can track your money and refer back to it if a customer calls with a query. Start at a logical number and go up by one each time you bill someone. Never use the same number twice, as this creates a nightmare when you or your accountant try to reconcile your bank statements.

You also need two key dates on every bill. The issue date is the day you send the document over, and the due date is the final day you expect the money in your account. If you give a customer fourteen days to pay, write the exact calendar date down rather than just writing fourteen days, so there is no room for argument.

Clear dates make it much easier when you are managing your business cash flow and keeping track of who has paid and who has not.

• A unique invoice number that increments sequentially
• The exact date the invoice is issued
• The exact date payment is due
• The original quote or job reference number if you used one

How to break down labour and materials

A vague bill with a single lump sum often leads to customers asking questions and delaying payment. Instead, list out every part of the job clearly so the customer can see the value of what you have done. Separate your labour from your materials, and list any specific parts you had to buy to complete the task.

Say a job costs £450 in total. You might list two hours of diagnostic work at a set rate, the replacement valve you fitted, and the labour for the fitting. If you charged for parking or congestion charges, list those as separate line items too so the customer sees transparency.

When you give a clear breakdown, the customer rarely questions the total. You can use tools like professional trade quoting to pull your original line items straight through into your final bill without retyping everything.

• Clear description of the work completed
• Labour costs broken down by hours or flat rates
• Materials and parts itemised with their individual costs
• Any extra expenses like parking or waste disposal

Tax, CIS, and payment instructions

If you are registered for VAT, your invoice must show your VAT registration number, the rate of VAT applied to each item, and the total VAT charged. If you are not registered for VAT, you simply do not include it. Make sure you never charge VAT if you are not registered, as this is against the rules.

If you work in the construction industry and fall under the Construction Industry Scheme, you may need to show deductions on your statement if you are working for a main contractor. Always check the current guidance on GOV.UK or speak with your accountant to get your CIS deductions right.

Finally, always include your bank sort code and account number clearly at the bottom of the page, along with instructions on how to pay. If you want to make it even easier, you can add payment terms so everyone knows what happens if payment is late.

• Your bank account name, sort code, and account number
• VAT number and breakdown if you are VAT registered
• CIS deduction details if applicable to the contract
• Payment terms and reference instructions

Quick questions

Getting your invoices right takes a few minutes upfront but saves hours of chasing later. Take a look at your current invoice layout today and check that you have all your business details, a unique numbering system, and a clear breakdown of your work in place.