Are capital gains taxed when my stock is acquired or merged?

Tax implications of acquisitions, mergers and spinoffs

Several corporate transactions can create unexpected tax consequences for shareholders even if you never placed a sell order, Mary. When a public company is acquired and all outstanding shares are bought—such as when a company is “taken private”—the transaction is usually treated as a disposition for tax purposes. That means shareholders will generally realize either a capital gain or a capital loss, depending on the difference between the sale proceeds and their adjusted cost base (ACB).

Not all deals are purely cash-for-stock. In many acquisitions the buyer pays cash, offers shares in the acquiring company, or uses some combination of cash and shares. Whether you receive cash or securities affects the immediate tax outcome. Receiving cash typically crystallizes a capital gain or loss. Receiving shares of the acquiring company can, in some cases, allow you to defer recognition of the gain by transferring your adjusted cost base to the new shares.

If a transaction qualifies for a rollover treatment, the transfer of ACB to the replacement shares can postpone any tax payable until you later dispose of those new shares. In Canada this sort of treatment can be achieved through provisions such as a section 85 rollover in certain qualifying situations. A section 85 election requires specific paperwork (for example, Form T2057 when transferring property to a taxable Canadian corporation) and must be completed correctly and on time to be effective. If you believe your situation might qualify for this type of election, consult a tax professional promptly to ensure the necessary filings are made.

When a company is merged or spun off

Mergers, amalgamations and corporate spin-offs have their own tax rules, and some of these transactions may be tax-deferred by default under the Income Tax Act. For example, mergers or amalgamations that meet the statutory conditions can qualify under section 87, which may allow the transaction to be tax-deferred without requiring shareholders to file an election in many cases.

Spinoffs—where a parent company separates part of its business into a new, independently traded company—may be eligible for tax-deferral treatment under section 86.1. The Canada Revenue Agency (CRA) maintains guidance and a list of eligible spinoff structures that it has approved for potential tax deferral; taxpayers often need to follow specific procedures and may be required to include a letter with their tax return when making a spinoff election. Because the rules are specific and technical, companies typically provide general information to shareholders but advise seeking tailored tax advice.

Whether a transaction is automatically tax-deferred, requires an election, or is fully taxable depends on the precise legal structure of the deal and how the consideration is paid. That’s why investors who are facing an unexpected change in their holdings should get professional guidance to determine whether any relief or election is available in their particular case.

Does it matter if a shareholder agrees with the transaction?

Unfortunately, voting against the acquisition does not change the tax consequences for you. If a majority of shareholders approved the sale and the transaction closed, the tax treatment will generally be applied uniformly to all shareholders, regardless of how each individual voted. If the sale resulted in cash being paid out to you, that disposition will be reported as a taxable event on your income tax return alongside any other dispositions you report for the year.

If you end up with an unexpected capital gain, there are several commonly used strategies to manage the resulting tax bill:

• Tax-loss harvesting: Sell other investments in taxable accounts that are currently trading at a loss to realize capital losses that can offset capital gains. Capital losses can be used to offset capital gains in the current year, carried back to previous years in some cases, or carried forward to future years.
• Use registered accounts where possible: If you have available contribution room in registered plans such as an RRSP, contributing can reduce your taxable income in the year and may help offset the tax on the gain, depending on your overall situation.
• Consider timing: If the transaction gives you replacement shares rather than cash, consider your long-term plan and whether holding or selling at a later time better fits your tax and investment objectives.
• Carryforward and planning: If you have unused capital losses from previous years, these can be applied against current gains. Likewise, if you expect lower income in a future year, you might time dispositions accordingly.

None of these options are one-size-fits-all. The right approach depends on your total taxable income, other investment holdings, and your broader financial plan. Consulting a tax advisor or financial planner can help you choose the best mix of strategies and ensure necessary elections or filings are completed properly.

Read more from Jason Heath:

• Selling stocks at a loss in a TFSA: What it means for your contribution room
• Tax planning for Canadians who invest in the U.S.

• The tax implications of transferring a stock between spouses
• Do non-residents pay tax on CPP? What if you live in the U.S.?