HST Input Tax Credits (ITC): How to Track and Never Miss a Credit
If you're registered for HST/GST in Canada, every dollar of HST you pay on business purchases can be reclaimed as an Input Tax Credit (ITC). But only if you track it properly. This guide explains what ITCs are, who qualifies, the CRA rules, and the simplest system to track every credit you're owed.
The average Canadian small business with $60,000 in annual expenses pays roughly $7,800 in HST. That's $7,800 in ITCs you may be leaving on the table if you're not tracking properly.
What Are HST Input Tax Credits (ITCs)?
When you're registered for HST/GST and buy something for your business, you pay HST on that purchase. An Input Tax Credit lets you recover that HST from the CRA. Effectively, you only pay HST on the value you add — the difference between what you collect from customers and what you pay on purchases.
Example: You pay $113 for business supplies ($100 + $13 HST). When you file your HST return, you claim the $13 as an ITC. The CRA refunds it (or you deduct it from HST collected from clients).
Who Can Claim HST ITCs?
You can claim ITCs if you are registered for HST/GST and the expense is for use in your commercial activities. Most self-employed Canadians over $30,000 in annual revenue must register (the small supplier threshold).
Who qualifies
- ✓HST-registered businesses
- ✓Self-employed over $30K/year
- ✓Partnerships and corporations
- ✓Uber/rideshare drivers (mandatory registration)
Who does not qualify
- ✗Unregistered businesses under $30K
- ✗Employees (not self-employed)
- ✗Purchases for personal use
- ✗Exempt supplies (housing, health care)
Which Expenses Qualify for ITCs?
Any business purchase that had HST charged can generate an ITC — with some important exceptions:
Full ITC (100%)
- Office supplies and equipment
- Software subscriptions
- Professional services (legal, accounting)
- Business travel and accommodation
- Advertising and marketing costs
50% ITC — Meals & Entertainment
- Business meals with clients
- Entertainment expenses
- Only 50% of the HST paid is claimable — CRA rule
- Apply the 50% at the ITC calculation stage, not when recording the expense
Pro-Rated ITC — Mixed Use
- Phone used 70% for business → claim 70% of HST
- Vehicle used 60% for business → claim 60% of HST
- Home office → claim the same % as your home office expense deduction
No ITC
- Exempt supplies (basic groceries, residential rent, health services)
- Personal expenses unrelated to your business
- Purchases from unregistered suppliers (no HST number on invoice)
CRA Documentation Requirements for ITC Claims
The CRA has strict rules about what documentation you need to support an ITC claim. The requirements depend on the amount:
| Amount | Required Information |
|---|---|
| Under $30 | Supplier name, HST/GST paid, date |
| $30 – $149.99 | Supplier name, GST/HST number, invoice date, amount, HST paid |
| $150+ | All of the above + buyer's name/business, description of goods/services, terms of payment |
Source: CRA Guide RC4022 — General Information for GST/HST Registrants
The Simplest System to Track HST ITCs
The key to not missing ITCs is capturing them at the point of purchase, not trying to reconstruct them at filing time. Here's the workflow:
- 1
Capture receipts immediately
Photograph or scan every receipt the moment you get it. Don't let them pile up.
- 2
Extract the HST amount
Every receipt shows the HST separately (or you can calculate it: total ÷ 1.13 × 0.13 in Ontario, adjust for your province). Record this per receipt.
- 3
Apply use percentage
If an expense is partially personal (phone, vehicle), multiply HST by your business-use %. Document how you calculated this percentage.
- 4
Apply the 50% meal rule
For meals and entertainment only, halve the ITC. Record the full HST paid but only claim 50% as ITC.
- 5
Sum quarterly
CRA requires quarterly HST remittance for most businesses. Sum ITCs by quarter to calculate your net HST owing (HST collected − ITCs).
How R2Sheet Auto-Tracks HST for You
R2Sheet was designed specifically for Canadian self-employed, so HST tracking is built in:
Auto-extracts HST
AI reads the HST amount from every receipt image automatically.
Quarterly ITC totals
Dashboard tab shows Q1–Q4 ITC totals, updated as you upload.
50% meals rule applied
Meals and entertainment HST automatically halved for ITC.
Mixed-use pro-rating
Set a business-use % per category; ITCs calculated accordingly.
Receipt links preserved
Each spreadsheet row links to the receipt in your Google Drive.
CRA-ready output
Your Google Sheet has the exact columns you need for HST return filing.
Frequently Asked Questions
When do I need to register for HST/GST in Canada?
You must register for HST/GST when your total taxable revenues exceed $30,000 in a single quarter or in any four consecutive calendar quarters. Uber and rideshare drivers are required to register from day one, regardless of revenue.
What's the deadline to claim an ITC?
Generally, you have four years from the end of the reporting period in which the ITC would have first been claimable to claim it. For annual filers this effectively means you can go back 4 years. Don't leave old ITCs unclaimed.
Do I need the supplier's HST number on every receipt to claim an ITC?
For purchases $30 or more, yes. The supplier's GST/HST registration number must appear on the invoice or receipt. For purchases under $30, you only need the supplier's name and the HST amount.
Can I claim ITCs on purchases made before I registered for HST?
In some cases, yes. For capital property and improvements acquired before registration that are still being used in your commercial activities, you may be eligible to claim transitional ITCs. Consult a tax professional for specifics.
How do I handle HST on subscriptions from US companies (like Slack or Adobe)?
Many foreign digital services are required to charge and remit HST/GST on sales to Canadian businesses. Check if HST appears on the invoice. If so, claim the ITC as normal. If the foreign company isn't HST-registered in Canada and doesn't charge HST, there may be a self-assessment obligation.
Never Miss an ITC Again
R2Sheet automatically extracts HST from every receipt and tracks your quarterly ITC totals in Google Sheets. Free plan available.
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