It's the question every business owner eventually asks their accountant, usually in a hopeful tone: the bank statement shows the purchase, isn't that enough?
It's a reasonable question. Your statement is already organized, already searchable, already backed up, and it never fades to a blank grey strip in the console of your truck. Receipts are the opposite of all those things.
Here's the answer, and it isn't the one most people want: a bank or credit card statement is not enough on its own. But the reason why is more useful than the rule itself, because once you understand what CRA is actually testing, you'll know exactly which receipts matter most — and which ones you can stop losing sleep over.
Why a Statement Isn't Enough: Two Different Proofs
CRA is looking for two things when it questions an expense, and a statement only delivers one of them.
Proof of payment — that money actually left your account. Your statement does this perfectly. It's dated, it's from a third party, and it can't be fabricated in a spreadsheet.
Proof of purchase — what you bought, from whom, and why it was a business expense. Your statement doesn’t do this. A line reading “HOME DEPOT #7011 $412.87” proves you spent $412.87 at a hardware store. It doesn't prove whether that was framing lumber for a customer job or a new deck at your own place.
That gap is the whole issue. And the CRA's starting position when documentation is thin isn't to give you the benefit of the doubt — it's to disallow the expense. You're the one who has to prove the deduction, not the auditor who has to disprove it.
Where It Gets Stricter: GST/HST Input Tax Credits
For income tax deductions, CRA looks at the overall reasonableness of your records. For GST input tax credits, there's an actual regulation listing what you must have on file — and the requirement scales with the size of the purchase.
This is the part that catches people, because a bank statement fails the test at every tier.
Purchase total (incl. tax) – effective April 20, 2021
What your documentation must show
Under $100
Supplier name, date, and the total GST paid — or a note that the price includes GST at the applicable rate
$100 to $499.99
All of the above, plus the supplier's GST/HST registration number
$500 and up
All of the above, plus your business name as the buyer and a description of what was supplied.
The practical risk here is real. If an auditor reviews three years of ITC claims and finds the supporting documentation missing, those credits get denied — and you repay them with interest, on money you spent years ago.
What a Valid Receipt Actually Has to Show
Nothing exotic. Most of what you already get at the till qualifies:
•Supplier's name and location
•Date of the purchase
•Description of what was bought
•Total amount and the GST charged
•Supplier's GST/HST number (at $100 and up)
•Your business name (at $500 and up)
Yes, Digital Counts — and It's Better
CRA has accepted electronic records for years, provided they're legible, complete and stored in a format that can be opened on request.
That means a photo of a receipt in QuickBooks Online, Xero, Wave or Dext is a valid record. It also means a scanned copy is fine, though if you scan a paper original with the intention of destroying the paper, the scan has to meet imaging standards — worth a conversation with your accountant before you shred anything.
What to do: Photograph receipts at the point of purchase, in the parking lot, before they hit the dash. Whatever app your books live in already does this from your phone. The habit takes ten seconds and eliminates the entire problem.
How Long You Have to Keep All of This
Six years from the end of the last tax year the records relate to. That's the general rule, and it applies to both the receipts and the statements.
The statements aren't useless, to be clear — CRA expects you to keep those too. They're just the other half of the pair. Statement plus receipt is a complete answer. Statement alone is half an answer.
What If the Receipt Is Genuinely Gone
It happens. Thermal paper fades, phones get replaced, subs go quiet.
You aren't automatically sunk. A statement line combined with other corroborating evidence — the supplier invoice, the job file, an email confirmation, a signed contract, a delivery slip, the customer quote that same material was billed into — can support a legitimate expense. Many suppliers and most online vendors can reissue a copy years later, and account history at a regular supplier is often retrievable with one phone call.
What doesn't work is a statement line and a verbal explanation. The more the expense is worth, the more corroboration it needs.
What to do: Chase the reissue before you need it, not during a review. If you're rebuilding a year, start with your largest suppliers — a handful of calls can often recover a lot of expense support.
The Honest Summary
A bank statement proves you spent money. A receipt proves what you bought. CRA wants both, and the deductions most likely to be challenged are the ones where you only have the first.
The good news is that this is a five-second-per-purchase problem with a six-year consequence. Almost nobody who photographs receipts as they go ever thinks about this again.
Where a CPA Fits
Documentation is your job. Making it hold up — knowing which expenses will draw scrutiny, how to substantiate the grey ones, and what to do when CRA sends a letter — is where an accountant earns their fee.
MaryLee Vaughan Professional Corporation is a Chartered Professional Accountant practice in Spruce Grove, serving the area for more than 25 years and working with Alberta small businesses and trades companies — corporate and personal tax, year-end financial statements, tax planning, and CRA notices, reviews and appeals.
If you've had a CRA letter land, or you'd rather find out now whether your records would hold up, book a free 20-minute consultation. No pressure and no jargon.
This article is general information, not tax advice. Documentation requirements vary by business structure, registration status and transaction type — confirm the specifics for your situation with your accountant.