
Eligibility Percentage = (Total Taxable & Zero-Rated Revenue / Total Revenue) × 100%
Total Revenue includes taxable, zero-rated, and exempt supplies. Example: If your business earned $80,000 from taxable sales and $20,000 from exempt services (Total $100,000), your percentage is ($80,000 / $100,000) × 100% = 80%.
If you’d like tailored guidance, speak with a cross‑border tax professional at Tohme Accounting.
| Expense Category | Typical ITC Eligibility | Key Consideration |
|---|---|---|
| General Operating Expenses | Full | Applicable for expenses directly for taxable supplies. |
| Meals and Entertainment | Partial | Restricted eligibility for most business-related use. |
| Passenger Vehicles | Prorated | Varies based on business usage and capital cost limits. |
| Exempt Supplies | None | No ITCs for expenses related to providing exempt supplies. |

This percentage represents the portion of your business activities that generate taxable (including zero-rated) supplies, allowing you to claim Input Tax Credits (ITCs) on related purchases. It determines how much of the GST/HST you paid on your expenses can be recovered.
You typically calculate this by dividing your total taxable (and zero-rated) supplies by your total supplies for the specific period. This ratio helps determine the reclaimable GST/HST on expenses used for both taxable and exempt activities. For a detailed guide, learn how to calculate Input Tax Credits step by step.
Yes, while the general method is based on sales, specific rules apply for financial institutions, charities, and public sector bodies. The CRA also offers specific guidelines for determining an appropriate percentage, especially when dealing with mixed-use property or services. You should also be aware of restricted Input Tax Credits and their limits.
If your business activities shift, causing a substantial change in your eligibility percentage, you may need to adjust your ITC claims. The CRA outlines rules for annual adjustments or immediate changes, particularly concerning capital property.
For expenses that serve both personal and taxable business uses, you can only claim the ITC portion directly attributable to your taxable commercial activities. Your calculated eligibility percentage helps determine this reclaimable amount for shared expenses. Explore some Input Tax Credits examples to better understand what you can claim by expense category.
Given the nuances, particularly with mixed supplies, real property transactions, or significant capital acquisitions, it is always a good idea to consult with a qualified tax professional. They can ensure accuracy and compliance, helping you avoid potential penalties.
Samer Tohme, CPA – Tohme Accounting is a Canadian firm (Ottawa & Toronto) specialising in cross-border Canadian-U.S. tax, corporate tax filing, bookkeeping, GST/HST, and crypto accounting for SMBs and individuals. We take on US and Canadian clients and take on all tax and accounting related work.