When it comes to business tax accounting, most Canadian business owners share one simple goal: stay compliant and stay off the CRA’s radar. But between corporate filings, GST/PST, payroll deductions, and year-end reporting, it’s easy for something small to snowball into a costly problem.
At Rocket Accounting, we see it every year. Well-intentioned entrepreneurs think their taxes are handled, only to get hit with a CRA letter months later. The good news? Most of these issues can be prevented with a few consistent habits and the right professional support.
Let’s break down what the CRA looks for, how to reduce your audit risk, and what steps will keep your business flying smoothly through tax season.

Why the CRA Flags Certain Businesses
The CRA doesn’t randomly pick businesses for audit. Their systems are designed to look for patterns and inconsistencies in business taxation filings. When your numbers don’t match the benchmarks for your industry, or when your filings are incomplete or late, it raises a red flag.
Here are the most common triggers:
- Unusual expense claims: large deductions without supporting documentation.
- Revenue discrepancies: income on your T2 return doesn’t match GST filings or bank deposits.
- Repeated late filings: missed deadlines signal disorganization or avoidance.
- Large shareholder loans: especially when they remain unpaid year after year.
- Frequent loss years: continual losses can cause CRA to question whether you’re operating a business or a hobby.
These aren’t random checks. The CRA uses data analytics to spot outliers. If something looks off, you’re more likely to be reviewed.
Secret #1: Keep Your Books Current Year-Round
This is the most important (and most ignored) rule in business tax accounting. If your books are out of date, your filings will be too.
Many small businesses wait until year-end to hand over a pile of receipts to their accountant. That approach might save time in the short term, but it causes serious issues later. Late or inaccurate bookkeeping means:
- Missed deductions
- Incorrect GST or payroll filings
- Delayed tax returns
- Higher risk of CRA penalties
Consistent monthly bookkeeping keeps your numbers clean, your tax planning accurate, and your CRA risk low.
If bookkeeping is your weak point, consider professional Bookkeeping Services. At Rocket Accounting, we manage your books every month so your records are always accurate, organized, and ready for tax season.
Secret #2: File on Time. Every Time!
The CRA takes deadlines seriously. Missing even one can lead to automatic penalties and interest that compound monthly.
Common deadlines to track:
- GST/HST: usually quarterly or annually
- Payroll Remittances: monthly or semi-monthly depending on payroll size
- T4/T5 Slips: end of February each year
- T2 Corporate Tax Return: six months after your fiscal year-end
Late filing also hurts your credibility with the CRA. Even if you owe nothing, a history of missed filings increases your audit probability.
At Rocket Accounting, we guarantee deadlines. If we miss one, we pay the fine. That’s how confident we are in our process.
If you’re unsure which returns apply to your business, book a quick chat with our team through our T2 Corporate Tax Services page. We’ll make sure every filing is on the right track.
Secret #3: Keep Personal and Business Finances Separate
Mixing personal and business spending is one of the fastest ways to attract CRA attention. It makes your books messy, creates extra work for your business accountant, and complicates audits.
To stay clean:
- Open a dedicated business bank account and credit card.
- Avoid using personal funds for business purchases (and vice versa).
- Document all shareholder withdrawals and repayments.
- Pay yourself through proper payroll or dividends.
When your financial trail is clear, your CRA audit risk drops dramatically. Plus, your accountant can identify more legitimate write-offs because everything is properly categorized.
Secret #4: Back Up Every Claim
The CRA doesn’t just look at totals, they check documentation. That means every deduction on your tax return must have backup evidence.
This includes:
- Receipts and invoices
- Mileage logs
- Subcontractor agreements
- Bank statements
- Proof of payment (not just invoices)
If you can’t provide proof, the CRA can disallow the deduction, even years later.
Cloud-based systems like Xero make recordkeeping simple. You can upload receipts directly from your phone and link them to transactions. If you’re still tracking expenses manually, it’s worth upgrading your process now before the next tax season hits.
Secret #5: Review Compiled Financial Statements
A strong set of Compiled Financial Statements helps you (and the CRA) understand how your business is performing. These statements summarize your revenue, expenses, assets, and liabilities, prepared and verified by a CPA.
When your statements are accurate and up to date:
- Lenders trust your numbers.
- Tax filings match supporting documents.
- CRA reviews go smoother because everything aligns.
Even if your business isn’t required to file audited statements, having a CPA-compiled set each year gives your company a professional edge and peace of mind.
Secret #6: Watch for Common Deduction Mistakes
Many small business owners overclaim expenses because they assume “if it’s business-related, it’s deductible.” The CRA has clear definitions of what counts as a business expense, and they often differ from what owners expect.
Some frequent problem areas:
| Expense Type | CRA Issue | Fix |
| Meals & Entertainment | Only 50% deductible | Keep detailed receipts |
| Home Office | Overclaiming personal portion | Measure workspace accurately |
| Vehicle Costs | Personal vs. business use not separated | Keep mileage log |
| Travel | Combining business with vacation | Document purpose clearly |
Working with a professional Small Business Accounting team ensures deductions are claimed correctly, maximizing savings while staying compliant.
Secret #7: Reconcile, Reconcile, Reconcile
Reconciliation might not be exciting, but it’s essential. It means matching your accounting records to actual bank, credit card, and tax statements.
Why It Matters
- Detects fraud or duplicate charges early
- Prevents overstated income or expenses
- Keeps GST and payroll reports accurate
- Ensures your T2 return matches real cash flow
Failing to reconcile regularly often leads to errors that the CRA will catch before you do.
If your books haven’t been reconciled for a few months, you’re not alone, but don’t wait until year-end. A professional cleanup can prevent a costly audit later.
Rocket Accounting’s CPA Services include monthly reconciliations and reviews to ensure your books match what’s in the bank.
Secret #8: Plan for Taxes, Don’t React to Them
Tax season shouldn’t be a surprise. If you only think about taxes when it’s time to file, you’ll always feel behind.
Proactive planning involves:
- Setting aside estimated tax payments monthly
- Tracking income trends to project tax liability
- Timing major purchases or dividends strategically
- Reviewing your corporate structure for efficiency
Your accountant for taxes can help you reduce your year-end balance through legitimate strategies, not guesswork. At Rocket Accounting, we review your numbers throughout the year so your tax bill is predictable and fair.
Secret #9: Understand Shareholder Loans and Dividends
Many small business owners use corporate accounts like personal wallets, transferring funds in and out as needed. The CRA pays close attention to this.
If you take funds from your corporation that aren’t salary or dividends, they’re considered shareholder loans and must be repaid within one year after the end of the fiscal year, or they become taxable income.
A good business accountant helps you plan how to take money out of your company tax-efficiently, through a mix of salary, dividends, and reimbursements.
Secret #10: Don’t Ignore CRA Mail
It’s tempting to set aside CRA letters, but ignoring them only makes things worse. Most notices start simple. A request for clarification or documentation. If you don’t respond, penalties escalate.
Always open CRA mail immediately. If you’re unsure what it means, forward it to your accountant right away. Rocket Accounting handles CRA correspondence for our clients so you never have to worry about missing something important.
What to Do If You’re Already Behind
Maybe your books are a mess, your last return wasn’t filed, or you’ve received a notice of review. It happens, and it can be fixed.
Here’s What to Do
- Don’t panic or ignore it. CRA issues often worsen with delay. Act quickly.
- Collect all documents. Gather receipts, invoices, and prior filings. Even rough data helps.
- Get professional help. Partner with a CPA who can communicate directly with the CRA and file corrections.
- Implement new systems. Once caught up, set up ongoing bookkeeping to prevent repeat issues.
Rocket Accounting has helped dozens of small businesses rebuild their records, correct filings, and regain CRA compliance. You don’t have to handle it alone. Our team specializes in stress-free cleanups and accurate catch-up bookkeeping.
How Professional Support Keeps You Off the CRA Radar
You can’t control who the CRA audits, but you can control how audit-ready your business is. Working with a qualified CPA means every part of your process; bookkeeping, tax filings, reconciliations, is accurate and defensible.
Here’s how professional CPA Services make a difference:
- Consistency: Monthly reviews ensure no missed filings or deductions.
- Accuracy: Reports are reconciled, verified, and formatted for CRA standards.
- Support: If the CRA ever has questions, your accountant can respond directly.
- Peace of mind: You know everything is done properly — no last-minute chaos.
At Rocket Accounting, we’re more than a tax filing service. We act as mission control for your business, keeping your books aligned, deadlines met, and filings precise so you can focus on growth.
When to Hire a Business Accountant
If any of these situations sound familiar, it’s time to call in help:
- You’ve missed a filing deadline or CRA letter.
- You’re unsure what to claim as a deduction.
- You haven’t reconciled your books in over two months.
- Your tax bill was higher than expected last year.
- You’re expanding, hiring staff, or opening new locations.
An experienced business accountant will save you more than they cost by preventing errors, minimizing taxes, and protecting your business from audit stress.
Learn more about Rocket Accounting and how our team supports small businesses across Greater Vancouver and the Fraser Valley.
Your Next Step
If you want your business to stay organized, compliant, and off the CRA’s radar, take the first step today:
- Schedule a free discovery call with our team: Book A Call
- Or reach out directly through our contact form: Contact Us
We’ll review your current accounting setup, identify potential CRA risks, and show you how proactive, fixed-price accounting can save you both time and stress.
FAQs
How often should I review my business books?
Ideally, every month. This keeps your data accurate and makes year-end tax prep fast and simple. Waiting until tax season often leads to missed deductions or CRA issues.
What happens if I file my corporate taxes late?
The CRA will apply a penalty starting at 5% of the balance owing, plus 1% per month for up to 12 months. Repeat late filings increase the penalty even more.
Can I handle my own business taxes with software?
Yes, but most software can’t catch tax-planning opportunities or filing errors. It’s fine for small side businesses, but growing companies benefit from having a professional CPA review everything.
Do I need a separate business account for taxes?
Yes. Keeping a dedicated account for business transactions makes recordkeeping and tax filing much simpler. It also protects you if the CRA ever reviews your statements.
How can a CPA help reduce my audit risk?
A CPA ensures every return, deduction, and financial report is accurate and defensible. They know what the CRA looks for and make sure your filings meet every requirement, keeping your business audit-ready year-round.


