There are certain pieces of information that have to be on your invoices if you are charging GST, HST and/or PST. Your invoice must include: your business name. the date of the invoice. your Business Number (also known as the GST Registration Number). the purchaser's name. a brief description of the goods or services performed. the total amount paid or payable. the terms of payment. an indication of items subject to GST at 5% or HST at the appropriate provincial rate, or that the items are exempt, and either the total amount of GST/HST charged, or a statement that the GST/HST is included and the total rate of tax. if applicable, an indication of items subject to PST (also known as RST) at the provincial rate, or that the items are exempt, and either the total amount of PST charged, or a statement that the PST is included and the total rate of tax.
About proforma invoice _ A Proforma invoice is an invoice provided by a supplier in advance of providing the goods or service. A quotation in the form of an invoice prepared by the seller that details items which would appear on a commercial invoice if an order results. It is more of a customs declaration form used in international trade that describes the parties involved in the shipping transaction, the goods being transported, and the value of the goods. It is the primary document to declare value for customs. It is not a true invoice, because the seller does not record a pro forma invoice as an accounts receivable and the buyer does not record a pro forma invoice as an accounts payable.