GST (or Goods and Services Tax) is a tax that Canadians pay on most goods and services. Most provinces combined their GST and PST (Provincial Sales Tax) into what we call HST (Harmonized Sales Tax). Businesses or self-employed individuals who make more than $30,000 are required to charge GST/HST to their customers and report that to the CRA. However, you can recover the GST/HST that you paid on expenses related to your business.