Buying a Business in BC? The Financial Due Diligence Checklist (and the Red Flags That Kill Deals)
Key takeaways
- Financial due diligence verifies a business’s true earnings, cash flow, and liabilities before purchase, so the price and terms reflect reality.
- Common hidden risks when buying a business in BC are GST and PST arrears, payroll remittance gaps, and customer concentration without contracts.
- Asset purchases usually limit liability exposure; share purchases transfer the company’s full history, including its tax positions (subject to specific exceptions under tax and employment law).
- A working capital adjustment can protects the buyer from closing on a business with depleted cash, receivables, or inventory.
- Most red flags should change the price, terms, or timing of the deal rather than end it outright.
Buying a business can be one of the smartest moves you make as an entrepreneur, or one of the most expensive. The difference usually comes down to what you check before signing. Most deals that go sideways do so because the buyer paid too much, missed a hidden liability, or trusted a number that did not hold up.
This guide gives you a practical due diligence checklist for buying a business in BC: the financial documents to request, the red flags that should change your offer (or end it), and the questions to ask the seller before you commit.
A quick note before we start. This covers financial due diligence, not legal due diligence. This is also general information based on common situations, but you should always seek professional advice about a specific transaction before proceeding.
What is financial due diligence?
Financial due diligence is the process of verifying a business’s financial reality before you buy: how it earns money, what it truly costs to operate, what cash it produces, and what liabilities come with it. The goal is to confirm the price makes sense and uncover risks that should change the deal structure, timeline, or terms.
What it is not: a guarantee that nothing will go wrong after closing, legal advice, or a quick glance at the income statement. Real financial due diligence tests the numbers against bank activity, tax filings, contracts, and operations.
What it protects: your price, your terms, your stress level after closing, and your odds of being blindsided six months in.
Asset purchase vs share purchase in Canada: which is better for buyers?
Most BC business sales close as either an asset purchase or a share purchase. The structure shapes what you take on, how you are taxed, and which contracts carry over.
Asset purchase vs share purchase Canada, in plain English:
- Asset purchase: You buy selected assets (equipment, inventory, customer lists, goodwill) and can usually leave most historical liabilities behind.
- Share purchase: You buy the company as is, including its history. Tax positions, contracts, and liabilities all come with it.
- Either way, some contracts need consent to assign, and the tax treatment of the two paths differs significantly.
A well-structured asset deal can reduce exposure to past GST or payroll trouble that a share deal would not. Talk to your legal and tax advisors about which structure fits your situation. Avisar’s Tax Services team can help you weigh the after-tax cost of each path.
How to do financial due diligence on a BC business: a step-by-step process
Most buyers benefit from following the same six-step sequence. Each step protects a different part of the deal.
- Sign a non-disclosure document (NDA) and request the document list from the seller or broker (an NDA is a legally binding contract confirming you will not share any sensitive information provided by the seller).
- Verify financial statements against bank deposits to confirm the revenue is real.
- Confirm Canada Revenue Agency (CRA) filings and remittance status for corporate tax, GST, and payroll.
- Test customer concentration and contract assignability to gauge revenue risk after closing.
- Calculate normalized earnings and a defensible price range based on true cash flow.
- Decide on price adjustments, holdbacks, conditions, or walking away based on what you found.
The detailed checklist below supports each step.
The financial due diligence checklist (BC/Canada)
Use this financial due diligence checklist as your starting point. It works for most small business acquisitions in BC and Canada. Adjust the depth based on deal size.
Financials
The numbers tell the real story, but only if you test them.
- Two to three years of financial statements plus the most recent interim period: confirms trends, not just one strong year.
- Bank statements compared to reported revenue: shows whether sales actually hit the bank.
- Normalized earnings (also called seller’s discretionary earnings or SDE): strips out owner pay, personal expenses, and one-time items to show true cash flow.
- Margin trends with explanations: a sudden gross margin jump may be real, or it may be a reclassification.
- Revenue quality: recurring contracts are worth more than one-off projects.
Tax
Tax problems do not disappear in a share deal, and some can follow you in an asset deal.
- Corporate tax filings up to date: missing returns suggest deeper bookkeeping issues.
- GST and PST registration and filing frequency.
- Proof of payments, arrears, or active payment plans with CRA.
- Unfiled returns or aggressive tax positions flagged at a high level.
Payroll
GST/payroll liabilities due diligence is one of the fastest ways a deal sours after closing.
- Payroll remittances filed and paid on time: CRA arrears here carry personal director liability.
- Contractor vs employee classification: misclassified contractors create back-tax, CPP, and EI exposure.
- Vacation pay and other employee obligations recorded on the books.
- WorkSafeBC coverage and account standing.
Customer concentration
Customer concentration risk can turn a healthy business into a fragile one overnight.
- Top 10 customers and the percentage of revenue each represents.
- Whether those relationships sit on signed contracts or handshakes.
- Renewal timing and termination clauses at a high level.
- A simple stress test: if the biggest customer leaves in year one, can the business still pay you back?
Working capital
The working capital adjustment is where many deals get repriced at the closing table.
- A/R aging and collectability: old receivables rarely collect at face value.
- A/P completeness: are any unpaid bills missing from the books?
- Deferred or unearned revenue: cash already received for work not yet delivered.
- The “normal” level of working capital the business needs to operate week to week.
- A working capital adjustment trues up the price so you are not buying a business with an empty till.
Inventory (if applicable)
If the business carries stock, inventory can quietly hide losses.
- Valuation method and obsolescence risk.
- Count procedures and shrinkage history.
- Slow-moving items likely to need a write-down after closing.
Contracts
Contracts decide what you actually own after the deal closes.
- Lease terms and assignability: a great location means little if the landlord can block the transfer.
- Supplier concentration and pricing terms.
- Change-of-control clauses in customer and financing agreements.
- Personal guarantees the seller has signed that may not transfer cleanly.
Deal-killer red flags (that justify repricing or walking away)
These red flags when buying a business should slow you down or change your offer:
- Financial statements that do not tie to bank activity.
- Large unexplained miscellaneous or owner-paid expenses.
- Tax arrears or missing filings (GST/PST, payroll, or corporate).
- A/R that looks uncollectible across the board.
- Revenue concentrated in one or two customers with no signed contracts.
- Inventory values on the books that the physical count does not support.
- Key contracts or the lease that cannot be assigned to a new owner.
- Heavy use of “contractors” doing the work of employees.
- The owner is the business, with no team, no documented processes, and no transition plan.
- Sudden revenue or margin jumps in the year being sold, with no clear cause.
A red flag does not always kill a deal, but it should change price, terms, or timing. The right answer is often a holdback, an indemnity, a longer transition, or simply a lower number on the offer.
What to request from the seller (document request list)
Send this list to the seller (or their broker) early. The cleaner the response, the smoother the deal.
- Two to three years of financial statements, plus general ledger if available.
- Bank statements covering a sample period (often the last 12 months).
- A/R and A/P aging reports as of the most recent month-end.
- GST filings and proof of payment.
- Payroll filings (T4 summaries, PD7A remittance records) and proof of payment.
- Corporate tax returns and CRA Notices of Assessment for recent years.
- Customer list with revenue by customer for the last 12 to 24 months.
- Lease agreement and key supplier contracts.
- Inventory reports and the most recent count summary, if applicable.
If a seller pushes back hard on basic items here, treat that as a red flag in itself.
Questions to ask the seller (copy/paste)
Bring these to your next meeting. Asking in plain language works best.
- What changed in the business in the last 12 months?
- Which expenses on the books are personal or one-time?
- What portion of sales is recurring vs project-based?
- What are the top three reasons customers leave?
- Are there any tax arrears, payment plans, or open disputes with CRA?
- Are there any key contracts that cannot be assigned to a new owner?
- What happens to the business if you step away for 60 days?
- Who are the top five employees, and would they stay through a sale?
- What is the single biggest risk you would warn a new owner about?
- Why are you selling now?
- Have any past offers fallen through, and why?
- What would you change about the business if you kept it another five years?
Book a free consult
Buying a business in BC should not feel like a leap in the dark. If you are weighing a deal and want a clear read on the numbers before you sign, we can help.
A short call with an Avisar CPA gives you:
- A focused list of what to ask for from the seller.
- The risks worth pricing into your offer.
- A view on whether an asset or share deal fits your situation better.
Book a free consult and walk into the deal with confidence, and out of it without surprises.
FAQ
How long does due diligence take? For most small business deals in BC, expect two to six weeks once the seller delivers documents. Larger or more complicated deals can run longer. Speed depends mostly on how organized the seller’s records are.
What is the biggest hidden risk when buying a business? One of the most common hidden risks are tax and payroll arrears with CRA. They can follow the buyer in a share deal and trigger personal director liability. A clean review of GST, payroll, and corporate tax filings catches most of it early.
Do I need a CPA before making an offer? Yes, ideally before. A CPA helps you set a defensible price range, normalize earnings, and add protective conditions to the letter of intent so deeper review does not catch you off guard.
What documents should I request first? Three years of financial statements, recent bank statements, GST and payroll filings, and the A/R aging report. If those four are clean, the rest of the file usually is too.
Disclaimer: Avisar Chartered Professional Accountant’s blog deals with a number of complex issues in a concise manner; it is recommended that accounting, legal or other appropriate professional advice should be sought before acting upon any of the information contained therein. Although every reasonable effort has been made to ensure the accuracy of the information contained in this post, no individual or organization involved in either the preparation or distribution of this post accepts any contractual, tortious, or any other form of liability for its contents or for any consequences arising from its use.













