"Invoice": This indicates the purpose of the commercial document and should be placed near the top of the page. Name of your business: Format in bold and place at the top of the page. Include your company logo for a branded look.
Next you'll want to include your contact information: your mailing address, phone number, email address, website, etc., right underneath your business name. If you'd like to up the professionalism, create and include your own logo on the right – or left-hand side of the header.