M&A tax strategies Toronto

M&A tax strategies in Toronto and across Canada involve choosing the right deal structure: asset purchase, share purchase, or amalgamation, to minimise or defer tax for both buyers and sellers. Key tools include the Lifetime Capital Gains Exemption ($1.25 million per shareholder), Section 85 rollovers, Section 87 amalgamation rules, and pre-sale corporate reorganisations under the Income Tax Act.

Tax is not an afterthought in a merger or acquisition. It is often the single largest variable in a deal's economics. Two businesses with identical purchase prices can produce dramatically different after-tax proceeds for the seller, and dramatically different acquisition costs for the buyer, depending on how the transaction is structured.

This guide breaks down the core M&A tax strategies available to Canadian businesses, from deal structure selection through post-acquisition integration. Whether you are preparing to sell a business in Toronto, acquiring a competitor, or advising on a corporate transaction, understanding these strategies is important before negotiations begin.

Why Deal Structure Is Central to M&A Tax Strategies

Buyers and sellers in an M&A transaction have naturally opposing tax interests, and those interests centre almost entirely on deal structure.

Sellers generally prefer to sell shares of their corporation. Share sales trigger capital gains treatment: only 50% of the gain is included in taxable income, and qualifying sellers may shelter up to $1.25 million of gain entirely tax-free under the Lifetime Capital Gains Exemption (LCGE). There is no recapture of depreciation on assets sold inside a share deal.

Buyers generally prefer to purchase assets. An asset purchase gives the buyer a stepped-up cost base for the assets acquired, enabling larger future depreciation deductions. It also allows the buyer to choose which assets and liabilities to assume, leaving unwanted contingencies, including hidden tax liabilities, with the seller's corporation.

This structural tension is where skilled tax and M&A counsel earns its value. The gap between buyer and seller preferences creates room for negotiation, price adjustment, and hybrid structures that give each party partial relief.

Asset Purchase vs. Share Purchase: The Core Tax Comparison

For Sellers

In a share sale, the seller disposes of shares of a corporation. The gain is the difference between the proceeds and the adjusted cost base (ACB) of the shares. That gain is a capital gain, 50% included in income under the Income Tax Act, RSC 1985 s. 38. If the shares qualify as Qualified Small Business Corporation (QSBC) shares, the seller may claim the LCGE.

In an asset sale, the seller disposes of individual assets: equipment, inventory, goodwill, real property. Different tax rules apply to different asset types:

Depreciable property: The seller may face recapture of previously claimed capital cost allowance (CCA), which is fully taxable as income, not a capital gain.
Goodwill and eligible capital property: Taxed as a capital gain for the seller, but the buyer can write it off at 5% per year (Class 14.1).
Land and non-depreciable property: Capital gain treatment for the seller.

The blended result for asset sale sellers is typically worse than a share sale, because recapture is taxed at the full income inclusion rate rather than the 50% capital gains rate.

For Buyers

In an asset purchase, the buyer's cost base for each acquired asset is the purchase price allocated to it. This step-up in cost base enables higher future CCA deductions, reducing the buyer's ongoing tax cost. The buyer also controls exactly which liabilities it assumes, a significant advantage when the target has unknown or contingent tax liabilities.

In a share purchase, the buyer acquires the shares of the corporation at the purchase price. The corporation's internal asset cost bases remain unchanged; there is no step-up. The buyer also inherits all of the target corporation's historic tax liabilities, making thorough tax due diligence important.

GST/HST and Land Transfer Tax

GST/HST generally applies to the sale of business assets. However, the CRA's "going concern" election under the Excise Tax Act can eliminate GST/HST on asset sales where the buyer is acquiring a functioning business and both parties are registrants. Share sales are not subject to GST/HST.

In Ontario, asset sales involving real property trigger Ontario land transfer tax, calculated on the fair market value of the property transferred. Share sales do not trigger land transfer tax, which is one additional tax advantage of share deals for sellers of businesses with significant real estate.

The Lifetime Capital Gains Exemption in M&A

The LCGE is the most powerful tax planning tool available to Canadian business owners selling shares of a qualifying corporation. As of June 25, 2024, the exemption limit is $1.25 million per shareholder, indexed to inflation going forward. A seller who qualifies can shelter up to $1.25 million of capital gain entirely from tax.

Qualifying Conditions

To claim the LCGE on shares of a small business corporation, the shares must qualify as Qualified Small Business Corporation (QSBC) shares under s. 110.6 of the Income Tax Act. The four key tests are:

CCPC test: The corporation must be a Canadian-Controlled Private Corporation (CCPC) at the time of the sale.
90% active business asset test (at time of sale): At least 90% of the fair market value of the corporation's assets must be used in an active business at the time of the sale.
50% active business asset test (24 months prior): For the 24-month period before the sale, at least 50% of the corporation's assets must have been used in an active business.
Holding period: The shares must generally have been owned by the seller (an individual or qualifying trust) for at least 24 months before the sale.

Multiplying the Exemption

Each qualifying individual shareholder can claim the LCGE independently. A business owner who has structured equity through a family trust, with spouses and adult children as beneficiaries, can allocate capital gains across multiple beneficiaries, each claiming their own LCGE. A couple with two adult children, each with $1.25 million in available exemption, could shelter up to $5 million in gains from a share sale.

Pre-Sale Purification

Many corporations hold passive assets: excess cash, marketable securities, investment properties, that cause them to fail the 90% active business asset test. A purification strategy involves removing these passive assets from the corporation before the sale, typically by:

Paying out excess cash as dividends or salary prior to closing
Transferring passive assets to a holding company
Restructuring the corporate group to segregate passive and active assets

Purification must be done well in advance of the sale. Rushed pre-closing purification may not satisfy the 24-month look-back period.

Tax-Deferred Rollovers: Key M&A Tax Strategies Under the Income Tax Act

Section 85, Property Transfer Rollover

Section 85 of the Income Tax Act allows a taxpayer to transfer eligible property to a taxable Canadian corporation on a tax-deferred basis. The parties file a joint election (Form T2057) specifying the "elected amount": the value at which the transfer occurs for tax purposes. The elected amount can be set as low as the transferor's cost, deferring all accrued gain.

Key features:

The transferor can be any taxpayer: individual, trust, or corporation
The transferee must be a taxable Canadian corporation
The seller may receive non-share consideration (cash, promissory notes, assumed debt) without triggering the full gain, subject to "boot" rules limiting the deferral
Section 85.1 extends similar rollover treatment to share-for-share exchanges, where the seller exchanges shares of a target corporation for shares of the acquiring corporation on a tax-deferred basis

Section 85 is commonly used in pre-sale reorganisations, corporate freeze transactions, and deals where the buyer is offering shares as partial consideration.

Section 87, Amalgamation Rollover

Section 87 of the Income Tax Act provides a tax-deferred mechanism for amalgamations, the merger of two or more taxable Canadian corporations into a single new entity.

Key features:

Applies automatically; no election required
Assets and liabilities transfer to the amalgamated corporation at their existing tax cost; no gain or loss is triggered
Shareholders of the predecessor corporations are deemed to dispose of their shares at ACB and acquire shares of the new corporation with the same ACB; no capital gain triggered
Contracts, employment relationships, leases, and registrations generally carry through without reassignment

Common amalgamation structures include:

Vertical amalgamation: A parent corporation and its wholly-owned subsidiary merge
Horizontal amalgamation: Two sister corporations merge into a new subsidiary of their common parent
Triangular amalgamation: Used in cross-border contexts; can be done on a tax-deferred basis under s. 87 even where shareholders of a predecessor do not become shareholders of the new entity

Tax Loss Utilisation: Preserving Value in Distressed Acquisitions

Acquiring a corporation that carries non-capital losses or net capital losses can create significant tax value, if structured correctly. However, the Income Tax Act imposes strict rules on how those losses can be used post-acquisition.

Acquisition of Control Rules

An acquisition of control (AOC), generally when a person or group acquires more than 50% of the voting shares of a corporation, triggers a deemed year-end at the moment of the change in control. This has several consequences:

Non-capital losses incurred before the AOC are restricted: they can only be used to offset income from the same or similar business carried on by the corporation after the AOC
Capital losses triggered by the deemed year-end become subject to streaming rules
The target corporation must file a short-year tax return as of the AOC date

Planning implication: Acquirers should model the impact of AOC rules before pricing in the value of a target's tax losses. Losses that appear on a balance sheet may not be freely usable post-acquisition.

Loss-Sharing in a Corporate Group

Where a profitable company and a loss company are under common ownership, M&A or reorganisation can be structured to allow losses to offset profits. Amalgamating the two entities under s. 87 merges their income streams, though AOC and loss-streaming rules still apply where applicable.

Pre-Sale Planning: The 12-to-24-Month Window

Tax planning for an M&A transaction should begin 12 to 24 months before anticipated closing. Late-stage planning is constrained by holding period requirements, CRA look-back tests, and the practical reality that rushed reorganisations raise scrutiny.

Key pre-sale planning steps:

1. Corporate purification Remove passive assets to satisfy QSBC tests for the LCGE. The 24-month look-back requires the active business asset test to be satisfied for the full period, not just at the moment of sale.

2. Estate freeze An estate freeze crystallises the current owner's equity at present value and allows future growth to accrue to the next generation or other shareholders. This is particularly useful when anticipating a multi-year run-up in value before a sale.

3. Share class reorganisation Creating different classes of shares can facilitate income splitting, allow multiple family members to claim the LCGE independently, or accommodate an earn-out structure in the sale agreement.

4. Holding company review The presence of a holding company that owns shares of the operating company can disqualify LCGE eligibility if not structured correctly. The QSBC holding-period rules apply differently depending on how the shares are held.

Cross-Border M&A Tax Considerations

Cross-border transactions introduce layers of complexity not present in purely domestic deals.

Non-Resident Buyers

Foreign acquirers of Canadian businesses must consider:

Investment Canada Act: Acquisitions above certain thresholds require regulatory approval (net benefit review or national security review)
Withholding tax: Dividends paid to a non-resident parent are subject to Part XIII withholding tax under the Income Tax Act, typically 25%, reduced by applicable tax treaty (e.g., 5% for a US parent holding 10% or more of voting stock, or 15% for portfolio dividends, under the Canada-US Tax Convention)
Non-arm's-length share dispositions: Pre-acquisition reorganisations involving non-residents may trigger deemed dividend or paid-up capital reduction rules under sections 84.1 and 212.1 of the Income Tax Act

Non-Resident Sellers

When a non-resident sells shares of a Canadian private corporation, Canada's tax rules under s. 116 of the Income Tax Act apply to gains on "taxable Canadian property" (TCP). The buyer is required to withhold 25% of the purchase price unless the seller provides a clearance certificate from the CRA confirming the tax has been addressed. Failure to obtain the certificate exposes the buyer to direct liability.

Exchangeable Share Structures

US buyers acquiring Canadian businesses increasingly use exchangeable share structures: a mechanism where Canadian sellers receive shares of a Canadian subsidiary exchangeable for shares of the US parent, deferring Canadian capital gains tax while providing the seller with economic exposure to the US acquirer's equity.

Mandatory Disclosure Rules (2023)

Canada's enhanced mandatory disclosure rules, which received Royal Assent on June 22, 2023, require taxpayers and advisers to report reportable transactions and notifiable transactions to the CRA within 90 days of entering into them. Certain M&A tax planning strategies, including those involving back-to-back arrangements, non-resident withholding tax avoidance, and other designated transactions, may be caught by these rules. Failure to report carries substantial penalties.

Tax Due Diligence: What to Verify Before You Sign

Tax due diligence in an M&A transaction is a distinct exercise from financial due diligence. It focuses on identifying hidden tax liabilities that could affect the deal's economics or result in post-closing claims.

Key areas to review:

Corporate tax returns and assessments: at least five years, with CRA correspondence
GST/HST compliance: elections filed, input tax credits claimed, outstanding assessments
Transfer pricing documentation: if the target has transactions with non-arm's-length non-residents
CRA audits, objections, and appeals in progress: these may not appear on financial statements
Tax attributes: undepreciated capital cost (UCC) pools, non-capital losses, capital losses, investment tax credits
Change of control provisions: in existing agreements, these may trigger default or consent requirements
Mandatory disclosure filing history: confirm the target has complied with reporting obligations

Tax representations and indemnities in the purchase agreement are the buyer's primary protection against pre-closing tax liabilities. Negotiate these carefully, with specific survival periods and dollar caps informed by the diligence findings.

Post-Acquisition Integration: The Tax Work Does Not End at Closing

After an acquisition closes, the combined entity often requires further reorganisation to achieve the intended tax structure.

Section 88 Wind-Up and the "Bump"

When a Canadian parent winds up a wholly-owned Canadian subsidiary under s. 88(1) of the Income Tax Act, certain non-depreciable capital property, including shares of other corporations and land, can be "bumped" to fair market value. This step-up in cost base allows the parent to extract that value in the future without triggering capital gains tax on the built-in appreciation that existed at the time of the wind-up.

The bump is a powerful planning tool in private equity acquisitions, where the acquirer may hold shares of the target indirectly through an acquisition vehicle.

Post-Acquisition Amalgamation

In leveraged buyouts, the acquirer often forms a new company (AcquisitionCo) to borrow the funds used to purchase the target. Post-closing, AcquisitionCo and the target amalgamate so that the target's operating income can be used to service the acquisition debt, and the interest on that debt is deductible against operating income. Without amalgamation, interest deductibility may be restricted.

Frequently Asked Questions About M&A Tax Strategies in Canada

What is the difference between an asset purchase and a share purchase in Canada?

In an asset purchase, the buyer acquires specific assets and liabilities of the business, with a stepped-up cost base for tax purposes. In a share purchase, the buyer acquires the corporation itself, inheriting its historic tax cost bases and all liabilities. Sellers typically prefer share sales for capital gains treatment and LCGE access; buyers prefer asset purchases for the step-up and liability control.

How does the Lifetime Capital Gains Exemption work in M&A?

The LCGE allows qualifying individuals to exclude up to $1.25 million (2024 limit, indexed to inflation) of capital gains from selling QSBC shares from taxable income. The shares must meet active-business asset tests at the time of sale and for 24 months prior, among other qualifying conditions.

What is a Section 85 rollover in Canadian M&A tax planning?

A s. 85 rollover allows a taxpayer to transfer property to a taxable Canadian corporation at an elected value, deferring any accrued gain until the receiving corporation ultimately disposes of the property. Both parties file a joint election (Form T2057) with the CRA to put the rollover in effect.

What taxes apply when a foreign buyer acquires a Canadian company?

Foreign buyers must consider the Investment Canada Act (regulatory review thresholds), Part XIII withholding tax on future dividends, and potential deemed dividend risks on pre-acquisition reorganisations. Non-resident sellers must address s. 116 clearance requirements, or the buyer faces a direct withholding obligation of 25% of the purchase price.

What is tax due diligence in an M&A acquisition?

Tax due diligence is a review of the target company's tax compliance history, outstanding liabilities, filed tax positions, and tax attributes. It identifies hidden risks, such as unassessed CRA positions or loss restrictions, before the deal closes, informing representations and indemnities in the purchase agreement.

How early should M&A tax planning begin before selling a business in Toronto?

At least 12 to 24 months before the anticipated close. Effective M&A tax strategies, including LCGE purification, share reorganisations, and estate freezes, all require time to satisfy CRA look-back tests and avoid scrutiny from rushed pre-sale restructuring.

What are Canada's mandatory disclosure rules for M&A transactions?

Since June 22, 2023, certain transactions must be reported to the CRA within 90 days. Reportable and notifiable transactions include those designed to avoid withholding tax, circumvent thin capitalisation rules, or achieve other designated outcomes. Failure to report triggers significant penalties for both taxpayers and their advisers.

How do acquisition of control rules affect tax losses in Canada?

When a buyer acquires more than 50% of a corporation's voting shares, a deemed year-end is triggered. Pre-AOC non-capital losses are restricted to offsetting income from the same or similar business post-acquisition. Buyers acquiring loss companies must model this carefully to avoid overvaluing the tax losses.

Sources & Official Resources

Federal Statutes Cited

CRA Guidance

Tax Treaties

Canada-US Tax Convention (Consolidated)

Contact Hadri Law

If you are preparing a business for sale, acquiring a competitor, or navigating a cross-border M&A transaction in Ontario, the tax structure you choose will determine how much of the deal value you actually keep.

Hadri Law's team brings the breadth of expertise M&A transactions require. Nassira El Hadri is a corporate and commercial lawyer with a background advising banks and corporations on M&A and financing transactions. Nicholas Dempsey has worked on over 90 asset and share sale transactions, specialising in acquisitions for private equity clients, startups, and family businesses. Martina Caunedo is Hadri Law's tax lawyer, with over 12 years of international tax experience and a focus on tax strategies for medium-sized businesses, including CRA audit defence and Tax Court representation.

Together, the team provides integrated M&A and tax counsel, from pre-sale planning through post-acquisition integration, without the overhead of a large firm.

We advise clients in English, French, Spanish, and Catalan.

Call (437) 974-2374 or book a free consultation to discuss your transaction.

This article is for informational purposes only and does not constitute legal advice. For guidance specific to your transaction, please consult a qualified lawyer.