Death and Private Company Shares: Loss Carryback or Pipeline
Why private company shares can be taxed twice at death, the two planning techniques that remove one layer, and the choice between them.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
When a private corporation shareholder dies, the shares are deemed sold at fair market value and the gain is taxed on the final return. If the estate then has the corporation redeem the shares, the redemption is a deemed dividend — taxing the same value twice. Two techniques prevent that: the subsection 164(6) loss carryback and the pipeline.
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Where does the double tax come from?
| Event | Tax |
|---|---|
| Death | Capital gain on the shares, taxed on the terminal return |
| Estate's cost base | Stepped up to fair market value |
| Corporation redeems the shares from the estate | Deemed dividend equal to the redemption price above paid-up capital; the estate also has a capital loss equal to the stepped-up cost base minus paid-up capital, which on its own cannot offset the dividend |
| Corporation later sells its assets | A further corporate-level gain on the assets, whose cost base was never stepped up |
Without planning, the family pays capital gains tax on the shares and dividend tax on the same value.
How does the 164(6) loss carryback work?
The estate causes the corporation to redeem the shares within the graduated rate estate's first three taxation years (only its first taxation year if the death was before August 12, 2024). The redemption creates a deemed dividend to the estate and a capital loss. Subsection 164(6) lets the estate carry that loss back to the deceased's terminal return, eliminating the capital gain. The family ends up paying dividend tax rather than capital gains tax — which can be cheaper or dearer depending on the corporation's refundable tax and capital dividend account balances. The stop-loss rule in subsection 112(3.2) can reduce the carried-back loss where a capital dividend is paid — for a graduated rate estate, generally only by capital dividends exceeding half the loss (or half the deceased's gain, if less) — so the sequence matters.
How does the pipeline work?
The estate transfers the shares to a new corporation in exchange for a promissory note equal to their stepped-up cost base. The new corporation and the old one amalgamate or wind up, and the note is repaid to the estate over time from the operating company's assets — tax-free, because the estate is simply collecting a debt. The family keeps capital gains treatment on the value at death. In its advance rulings, the CRA has generally accepted pipelines where the corporation continues its business for at least a year before the amalgamation or wind-up and the note is then repaid gradually; repaying it at once out of cash on hand risks a deemed dividend under subsection 84(2).
Which is better?
| Consider | Loss carryback favoured when | Pipeline favoured when |
|---|---|---|
| Corporate tax attributes | Large refundable dividend tax on hand or capital dividend account to pay out | Few attributes; capital gains rate beats dividend rate |
| Assets | Cash and investments | An operating business that will continue |
| Timing | Can act within the graduated rate estate's first three taxation years | More time is available |
| Heirs | Canadian residents | U.S.-person heirs may face different results on each route |
Hybrid plans use both: a partial redemption to extract the capital dividend account and refundable tax, then a pipeline for the remainder.
What if the heirs or executor are in the United States?
A U.S.-person heir receives a basis step-up in the shares for U.S. purposes, so the Canadian capital gains tax at death has no U.S. counterpart to credit against. A redemption dividend to a U.S. person is taxed in the United States with a foreign tax credit for Canadian withholding, and the corporation's status as a controlled foreign corporation or passive foreign investment company can alter the analysis. The executor's residence can also affect the estate's residence.
Frequently asked questions
What is the deadline for the loss carryback?
For deaths on or after August 12, 2024, the redemption must occur within the graduated rate estate's first three taxation years — no later than 36 months after death, when estate status ends — and the election is filed by the estate's filing due date for that year. For earlier deaths, the window is the estate's first taxation year only.
Does the pipeline work with the capital gains exemption?
Generally, yes — gain sheltered by the lifetime capital gains exemption at death still raises the estate's cost base — but section 84.1 can grind that cost base by the exempted amount for pipeline purposes, so that slice needs separate modelling.
Is the pipeline a tax avoidance scheme?
The CRA has issued favourable rulings on pipelines that meet the timing and business-continuation conditions set out in those rulings; pipelines that strip cash quickly risk reassessment as a deemed dividend.
Does any of this apply to shares of a public company?
No. Public shares are simply sold by the estate at the stepped-up cost base.
Official sources
The Income Tax Act provides: “If in the course of administering the graduated rate estate of a taxpayer, the taxpayer’s legal representative has, in a taxation year (in this subsection referred to as the “particular year”) that is within the first three taxation years of the estate,” — Justice Laws Website (Government of Canada), Income Tax Act, section 164, https://laws-lois.justice.gc.ca/eng/acts/i-3.3/section-164.html
The CRA explains: “Where the streaming of paid-up capital to a specific class of shares of the new corporation has been done in order to accomplish a form of surplus strip, consideration will be given to the application of the general anti-avoidance rule in section 245.” — Canada Revenue Agency, Income Tax Folio S4-F7-C1, Amalgamations of Canadian Corporations, https://www.canada.ca/en/revenue-agency/services/tax/technical-information/income-tax/income-tax-folios-index/series-4-businesses/series-4-businesses-folio-7-wind-dissolutions-amalgamations/income-tax-folio-s4-f7-c1-amalgamations-canadian-corporations.html
Next step
Fairlight Accounting handles U.S. domestic, cross-border (U.S.–Canada), and international tax returns, plus bookkeeping, payroll, and CFO advisory. Our Canadian Tax Desk models the loss carryback and the pipeline on the corporation's actual attributes within the estate's first three taxation years. See pricing or book a free fit call.
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