Calculate input tax credits - Overview

Determine the types of purchases and expenses
Determine the percentage of use in commercial activities
Determine the ITC eligibility percentage
Choose a method to calculate ITCs


As a registrant, you recover the GST/HST paid or payable on your purchases and expenses related to your commercial activities by claiming an input tax credit (ITC). You may be eligible to claim ITCs only to the extent that your purchases and expenses are for consumption, use, or supply in your commercial activities.

To claim an ITC, the expenses or purchases must be reasonable in quality, nature, and cost in relation to the nature of your business.

To calculate your ITCs, you need to:

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