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Many business owners think the biggest tax risk comes from one missed receipt or one late filing. However, a much bigger risk can grow quietly in the background. That risk is unreported business income.

A recent Tax Court of Canada case shows how serious this can become. In Edward Demchynski v. The King, 2024 TCC 18, the Court reviewed a situation where the Canada Revenue Agency used the net worth method to rebuild a taxpayer’s income. As a result, the Court accepted most of the CRA’s work and upheld serious penalties.

This case matters because it shows how the CRA looks at the full picture. In other words, the CRA does not look only at the tax return. It also looks at bank deposits, personal spending, asset growth, invoice patterns, and the overall story told by the numbers.

If you are a business owner, contractor, or landlord, this case offers a very clear lesson.

What happened in this case

The taxpayer said he worked for the town of The Pas, mainly at the hockey rink and doing lawn work. He also said he had a small side business doing carpentry and home repair work.

However, the CRA auditor found a very different picture.

First, the bank deposits were much higher than the income reported on the tax returns. Next, the invoices provided during the audit had numbering gaps. As a result, the CRA believed that not all business income had been reported.

At the same time, the taxpayer built two rental properties. One was a triplex in 2009. The other was a four-plex in 2010. Those projects required substantial money. Therefore, the CRA wanted to know where that money came from.

The taxpayer said family loans helped fund the buildings. Yet the Court did not see loan documents, matching bank deposits, or testimony from family members. Because of that, the judge accepted the CRA’s view that the buildings were self-funded.

Why the CRA used the net worth method

The CRA usually prefers normal books and records. For example, it would rather review ledgers, invoices, receipts, and accounting reports. In this case, that kind of evidence was weak or incomplete.

So, the CRA used the net worth method.

This method starts with a simple question: how much did the taxpayer own at the start of the year, and how much did the taxpayer own at the end of the year?

Then the CRA looks at liabilities. After that, it measures the change in net worth. Next, it adds personal spending. Finally, it removes known non-income items, such as child benefits and tax refunds.

If the final number is much higher than the income reported on the return, the CRA may treat the difference as unreported business income.

That is exactly what happened here.

What evidence helped the Court accept the CRA’s position

This is the most important part of the case.

The Court did not rely on broad impressions. Instead, the judge looked at concrete evidence.

First, the auditor reviewed bank statements and credit card records in detail. She traced deposits and withdrawals. She also separated transfers from real spending.

Second, she reviewed invoice patterns. The invoice numbers showed gaps. Therefore, the Court accepted that the records were incomplete.

Third, she reviewed personal spending. She grouped withdrawals into categories such as food, shelter, clothing, and miscellaneous spending. She also used practical methods when classifying payments.

Fourth, the Court looked at the construction of the triplex and four-plex. These were major assets. Since the taxpayer could not clearly prove outside funding, the Court accepted that business income funded the projects.

Fifth, the Court looked at credibility. The judge found the CRA auditor credible. On the other hand, the judge found the taxpayer and spouse unreliable on important points. That made a major difference.

In tax cases, credible documents usually carry more weight than broad verbal explanations.

The lifestyle issue also mattered

The taxpayer argued that his family lived a frugal lifestyle. He used that point to suggest that the CRA numbers were too high.

However, the Court saw evidence of regular time spent in Las Vegas through a time-share arrangement, plus additional yearly spending for more weeks there. The Court also noted that a home in Las Vegas was later purchased.

Therefore, the lifestyle evidence did not support the story that only modest income was earned.

This part of the case is important for business owners. The CRA often compares reported income with visible spending patterns. When the two do not fit together, questions grow quickly.

What the Court decided

The Court accepted the CRA’s net worth analysis with only limited adjustments. Those adjustments related to amounts that the Crown agreed should be treated as business expenses rather than personal expenses.

After those changes, the Court still upheld large amounts of unreported business income for 2009, 2010, and 2011.

The Court also upheld gross negligence penalties under section 163(2) of the Income Tax Act.

That is a serious outcome.

These penalties apply where a false statement or omission is made knowingly, or in circumstances amounting to gross negligence. In this case, the Court found that the taxpayer knowingly understated business income.

Why this case matters for business owners

This case gives several practical lessons.

First, complete records matter. Good bookkeeping creates a clear path from invoice to deposit to expense. That clarity can protect you during an audit.

Second, large assets need a clean funding trail. If you build rental property, buy equipment, or invest in real estate, you should be able to show exactly how the project was funded.

Third, personal and business spending should stay separate. That separation helps your books stay clean. It also helps the CRA understand your numbers.

Fourth, invoice control matters. Missing invoice numbers can raise concerns fast. A strong system helps show that sales are complete and properly recorded.

Fifth, tax returns should match the true scale of the business. If the reported numbers are far below the actual business activity, the risk becomes much higher.

How Cloudiverse CPAs Inc. can help

At Cloudiverse CPAs Inc. in Burnaby, we help business owners build clean systems before problems grow.

We focus mainly on corporate tax. We also support accounting and bookkeeping where it strengthens tax compliance and decision-making.

For example, we help clients:

• organize invoice systems
• match deposits to sales records
• separate business and personal transactions
• maintain stronger year-end support
• prepare for CRA reviews and audit questions
• improve bookkeeping workflows that support tax reporting

In a practical sense, Cloudiverse acts like a clear map for income tax issues. We help clients stay on track, spot risk early, and move with stronger direction.

Final takeaway

This case is a strong reminder that the CRA can rebuild income when records are weak. The Court may accept that work where the evidence is detailed, organized, and credible.

So, if you own a business, this is the time to strengthen your records. Clear bookkeeping, proper documentation, and thoughtful tax planning can make a major difference.

If your records tell a complete story, you stand on much stronger ground.

Call to Action

If you want help strengthening your bookkeeping, corporate tax reporting, or CRA audit readiness, contact Cloudiverse CPAs Inc.

Email: aman@cloudiverse.ca
Phone: 604-200-4027

Disclaimer

This article summarizes information from a publicly available Tax Court of Canada decision. It is for educational purposes only and does not express any personal opinions about the individuals or businesses involved.