Sole Trader vs Limited Company: How Invoicing Differs

If you’re thinking about switching from sole trader to limited company — or you’ve just made the switch — one small but important detail is what changes on your invoices. The good news: less changes than you’d think.

As a sole trader

Your invoices need your name (or trading name, if you use one) and address, your customer’s details, an invoice number, the date, a description of the work, and the amount due. If you trade under a name different from your own legal name, it’s good practice — and in some contexts a legal requirement — to state your own name alongside the trading name somewhere on the invoice.

As a limited company

Once you incorporate, your invoices should show your registered company name exactly as it appears on the Companies House register, along with your company registration number. If your letterhead or invoice mentions directors’ names, company law has specific rules about listing either all directors or none — worth a quick check if that applies to you. Your registered office address is often included too, though this is more a convention than a strict legal requirement for invoices specifically.

What doesn’t change

The core content of a good invoice is identical either way: a unique invoice number, clear line items, your payment terms, and VAT details if you’re registered. Whether you’re a sole trader or a limited company has no bearing on VAT registration itself — that’s based on your turnover (or voluntary choice), not your business structure.

VAT registration numbers

If you were VAT registered as a sole trader and then incorporate, note that your VAT registration doesn’t automatically carry over to the new company — you’ll usually need to register the limited company for VAT separately (or transfer the registration, in some cases), and your VAT number may change as a result. Update your invoice settings accordingly so you’re not showing an outdated number.

Keeping this simple

Whichever structure you trade under, the practical fix is the same: update your business name, registration details and VAT number once in your account’s Company settings, and every invoice you create afterwards picks them up automatically — no need to remember to change it invoice by invoice.