All invoices should clearly state that this is what they are, by including the word ‘invoice’.
They should also include the following:
- a unique identification number
- your company name, address and contact information
- the company name and address of the customer you are invoicing
- a clear description of what you are charging for
- the date the goods or service were provided (supply date)
- the date of the invoice
- the amount(s) being charged
- VAT amount if applicable
- the total amount owed.
In addition, if you are a limited company, sole trader and/or VAT registered, the law requires you to provide certain information on any invoices you send to your customers.
You can also add additional information to your invoices as you see fit to avoid delays in them being approved for payment.