Invoicing · 20 July 2026

What should a professional invoice include?

A good invoice should make it obvious who issued it, who it is for, what was supplied, how much is due and when payment is expected.

Core invoice details

Most small businesses should keep the following details consistent across every invoice:

• your business or trading name;
• your contact details and business address;
• the customer’s name and billing address;
• a unique invoice reference;
• the issue date and due date;
• a clear description of the work, goods or service supplied;
• line item quantities, rates and totals;
• payment details, if you want the customer to pay by bank transfer.

If VAT applies

If your business is VAT registered, your invoice should clearly show the VAT registration number, VAT rate, VAT amount and total payable. If you are not VAT registered, avoid adding VAT lines that could confuse the customer.

Keep issued invoices consistent

Once an invoice has been sent, it should be treated as part of your business record. If something needs correcting later, it is usually cleaner to issue a replacement or credit note rather than quietly changing the original.

If you want each invoice to follow the same structure without rebuilding it from scratch, Revara keeps your client details, document wording, payment details and issued PDFs in one organised workspace.