Hello! In Canada, VAT system is called the Goods and Services Tax (GST), which is a value-added tax. If your business earns more than $30,000 in annual revenue, you will need to register for GST number. There are several benefits to having . Firstly, you will be able to claim back GST that you pay on your business expenses. This means that you won't be paying tax twice on the same item. Additionally, having GST number can give your business more credibility, as it shows that you are registered and operating legally.