But here's the thing about a CRA review: it doesn't care how good your work is. It cares whether you can back up the numbers on your tax return. The difference between a stressful audit and a boring one almost always comes down to habits you built months — or years — before the letter showed up.
The good news is that “audit-ready” isn't a special project you do in a panic every spring. It's five small habits, most of which take less time than a coffee run to Tim Hortons.
1. Keep One Business Account and One Business Card — and Actually Use Them
This is the habit that fixes the most problems at once.
When personal and business spending share a chequing account, every transaction becomes a judgment call at year-end. Was that $340 at the Home Depot in Spruce Grove for a customer job or your own basement reno? Was the truck fill-up on the way to Acheson, or on the way to the lake?
If you can't answer that with confidence six months later, neither can your accountant — and neither can an auditor. Mixed accounts are one of the fastest ways to lose legitimate deductions, because when documentation is thin, the CRA's default position is to disallow the expense.
What to do: Open a dedicated business chequing account and one business credit card. Pay yourself from the business account to your personal account as an owner's draw or through payroll. When something personal accidentally goes on the business card, don't hide it — code it as a shareholder draw and move on. Auditors expect the occasional mix-up. What they don't expect is a shoebox with no line between the two.
2. Capture Receipts the Day You Spend, Not the Day You File
A bank statement proves money left your account. It does not prove what you bought or why it was a business expense. For that, you need the receipt.
CRA generally requires you to keep supporting records for six years from the end of the tax year they relate to. Digital copies are acceptable — a gift for anyone who has ever found a thermal-paper receipt fossilized in a truck console.
What to do: Build a fifteen-minute Friday routine. Photograph every receipt into your accounting app — QuickBooks Online, Xero, Wave and Dext all do this from your phone. Snap it in the parking lot before it hits the dash. Then, once a week, clear the console and the glovebox.
For anything over a couple hundred dollars, add a one-line note about the job it belongs to. “Panel + breakers – Jenkins reno, Grove Meadows” takes four seconds now and saves an hour of reconstruction later.
3. Log Your Kilometres Like It's Part of the Job
Vehicle expenses are the single most commonly challenged deduction for trades businesses, and it's not because tradespeople are cheating. It's because almost nobody keeps a proper log.
If you're running between a service call in Stony Plain, a supply pickup in Acheson and a quote in west Edmonton, you are putting real business kilometres on that truck. But a CRA auditor won't take your word for the percentage. Without a log, they can reduce or deny the claim entirely.
What to do: Record the date, destination, purpose and kilometres for business trips, plus your odometer reading on January 1 and December 31. Apps like MileIQ or the built-in tracking in most accounting software will do this in the background from your phone.
CRA also allows a simplified approach: keep one full year of detailed logs as a base year, then maintain a representative three-month sample in later years and use it to estimate the full year, as long as your business use stays consistent. That's a reasonable compromise if a full log feels like too much — but you have to do the base year first.
4. Handle Subcontractor Paperwork Before You Cut the Cheque
If your primary business activity is construction and you pay subcontractors for construction services, you're required to report those payments to CRA on a T5018 Statement of Contract Payments. A lot of small trades outfits don't know this until an auditor mentions it.
There's a second risk here too. If a “subcontractor” only works for you, uses your tools, follows your schedule and looks like an employee in every way except the paperwork, CRA or WCB Alberta may reclassify them — and you could be on the hook for the source deductions and premiums that should have been remitted all along.
What to do: Before a new sub does any work, collect their legal business name, business number, GST number and a current WCB clearance letter. Keep a signed contract on file. Re-request clearance letters as they expire. Track subcontractor payments in a separate account in your books so T5018 season is a report, not an archaeology dig.
5. Reconcile Monthly and Never Miss a Remittance Date
Reconciling means matching your books to your actual bank and credit card statements, every month, so the two agree.
It's the habit that catches everything else: the missing receipt, the customer deposit recorded twice, the supplier invoice that never got entered, the e-transfer from a client that quietly never made it into revenue. Caught in month two, it's a five-minute fix. Caught fourteen months later during a review, it's a credibility problem — and credibility is what an audit actually tests.
What to do: Book a recurring appointment with yourself. First Monday of the month, one hour, phone on silent. Reconcile every account, then check your filing calendar.
What an Audit Actually Looks Like When You're Ready
Here's the part that surprises people: a well-documented small business audit is mostly boring. CRA asks for a period of records. You send organized statements, receipts, logs and contracts. They tie in the numbers. It ends.
The stress in an audit doesn't come from the auditor. It comes from realizing you can't prove something you know is true.
These five habits cost you maybe two hours a month. They protect your deductions, they make year-end faster and cheaper, and they mean that if a letter ever does land in your mailbox, your answer is a folder — not a shrug.
Where a CPA Fits
Good habits keep your records defensible. A CPA turns those records into a filed return, a tax plan, and an answer when CRA asks a question.
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're running a trades business around Spruce Grove, Stony Plain or Parkland Countyand want your year-end handled by a CPA who understands construction, book a free 20-minute consultation. No pressure and no jargon.
This article is general information, not tax advice. Filing requirements and deadlines vary by business structure and revenue — confirm the specifics for your situation with your accountant.