Your invoice should include the following information:
Itemized descriptions of each billable item: Whether you sell services or products, it’s crucial that your invoice includes a clear description of each billable item, its price, and quantity.
Contact information: It’s crucial to include the contact information for your business and the customer you are billing. Include their full name, address, and telephone number.
Terms of payment: This outlines when the payment is due—read more about the recommended terms of payment in the invoice payment terms FAQ.
Accepted payment methods: Whether you accept payments via cheque, credit card or e-transfer, it’s important to let your customers know how to pay you.
GST/HST: In Canada, you are required to let your customers know when GST/HST is applied to their purchase and the cost of the tax.