This depends upon location, tax is not applicable unless the payer is located in:

• Australia: The final invoice will add Goods and Services Tax (GST). Providing a valid Australian Business Number (ABN) will exempt an institution or company from paying this tax.
• Canada: Goods and Services Tax (GST)/Harmonized Sales Tax (HST) will be added to the final invoice (dependent on province).
• Switzerland: Value Added Tax (VAT) will be added to the final invoice.
• United Kingdom: Value Added Tax (VAT) will be added to the final invoice.