Canadian Sales Tax Calculator (GST – HST – PST)

This free calculator is handy for determining sales taxes in Canada. Provincial, federal and harmonized taxes are automatically calculated for the province selected. Calculates in both directions – get totals from subtotals and reverse calculates subtotals from totals. Scroll down to use it online or watch the video demonstration.

Please contact us if you have questions about using this software or if you have suggestions about how we can improve it.

The calculator has two tabs. The first lets you get the sales tax on a subtotal, and gives you the total including tax. The second tab lets you calculate the taxes from a grand total including tax, and gives you the subtotal before tax. Useful for figuring out sales taxes if you sell products with “tax included” – or if you want to “extract” tax amounts from grand totals.

• Calculator Instructions

• To calculate the total amount and sales taxes from a subtotal:

  1. Ensure that the “Find Invoice Total” tab is selected.
  2. “Province of Sale” – Select the province where the product buyer is located.
  3. For provinces that split GST from PST (such as Manitoba, British Columbia, Quebec and Saskatchewan) a “No PST” checkbox will appear. Click to select it if the seller is in a different province from the buyer. If the seller is in the same province as the buyer, both GST and PST are normally charged so you should leave the “No PST” box deselected. Ontario, Newfoundland, New Brunswick and Nova Scotia use the combined HST, which is charged regardless of the Canadian buyer’s province.
  4. “Invoice Subtotal (without taxes $)” – Enter the amount on the bill or invoice before taxes.
  5. Press “Calculate” and you’ll see the tax amount(s) as well as the grand total (subtotal + taxes) appear in the fields below.

  To calculate the subtotal amount and sales taxes from a total:

  1. Ensure that the “Find Subtotal (before tax)” tab is selected.
  2. “Province of Sale” – Select the province where the product buyer is located.
  3. For provinces that split GST from PST (such as Manitoba, Quebec and Saskatchewan) a “No PST” checkbox will appear. Click to select it if the seller is in a different province from the buyer. If the seller is in the same province as the buyer, both GST and PST are normally charged so you should leave the “No PST” box deselected.
  4. “Invoice Total (with taxes $)” – Enter the amount on the bill or invoice after taxes.
  5. Press “Calculate” and you’ll see the tax amount(s) as well as the subtotal (subtotal – taxes) appear in the fields below.