Post-Mortem Planning
When a business owner dies, the same corporate value can be taxed twice — once on the terminal return and again when the estate extracts the funds. Post-mortem planning prevents that.
The double taxation problem
On death, a shareholder is deemed to have disposed of their shares at fair market value under subsection 70(5). This triggers a capital gain on the terminal return. But the shares the estate now holds still carry the same underlying corporate value — and when the estate eventually winds up the corporation or redeems those shares, that value is taxed again as a deemed dividend.
Without post-mortem planning, the combined tax on both levels can consume a disproportionate share of the corporate value that was meant to pass to the estate's beneficiaries.
Simplified example: A shareholder dies holding shares worth $3M with an adjusted cost base of $100K. The terminal return reports a capital gain of $2.9M — at the 50% inclusion rate, that's $1.45M of taxable income, resulting in roughly $770,000 in tax. When the estate then redeems the shares, the $2.9M excess over paid-up capital is treated as a deemed dividend, attracting another $460,000 or more in tax. The total tax bill: over $1.2 million on $2.9M of value — an effective rate above 40%.
Factors that shape the strategy
Choosing between a pipeline, a 164(6) election, or a hybrid approach depends on several interconnected variables. Understanding these before selecting a path is critical.
The capital dividend account
The capital dividend account (CDA) tracks the tax-free portion of capital gains realized by the corporation, as well as life insurance proceeds received net of the policy's adjusted cost basis. Dividends paid from the CDA are received tax-free by shareholders. In a post-mortem context, a large CDA balance can make the 164(6) route significantly more attractive — because the deemed dividend on share redemption can be paid partly or entirely from the CDA, reducing or eliminating the tax on the dividend layer.
Life insurance proceeds
If the deceased shareholder had a corporate-owned life insurance policy, the death benefit (net of the adjusted cost basis) is added to the corporation's CDA on death. This can dramatically change the post-mortem analysis. A $2M insurance payout, for example, could add $1.8M to the CDA — making a 164(6) election far more effective than it would have been without the policy. This is one of the reasons succession planning often includes life insurance as a component of the overall estate strategy.
Graduated rate estates
For the first 36 months after death, the estate may qualify as a graduated rate estate (GRE), which allows it to be taxed at progressive rates rather than the top marginal rate. The GRE designation also provides flexibility in choosing the estate's taxation year-end — which directly affects the timing window for a 164(6) election. Once the 36-month window expires, or if the estate doesn't qualify as a GRE, the estate is taxed at the top rate on all income, making the timing of post-mortem transactions even more critical.
Pipeline timing and CRA scrutiny
CRA has expressed views on the timing and structure of pipeline transactions. The transfer to the new holding company should generally not occur too quickly after death, and the wind-up or value extraction from the operating company should follow a reasonable timeline. There is no legislated safe harbour, but professional guidance is essential to ensure the pipeline is structured in a way that withstands review. The valuation supporting the promissory note amount is one of the first things CRA will examine.
The role of valuation
Both the pipeline and the 164(6) election depend on an accurate fair market value at the date of death. For a pipeline, the promissory note must equal the FMV of the shares — if CRA later determines the value was different, the pipeline structure may not fully eliminate the double tax. For the 164(6) election, the capital gain on the terminal return is determined by the date-of-death FMV, and any adjustment to that value changes the entire calculation.
We provide the independent, CBV-prepared valuations that establish the fair market value at the date of death — supporting both the terminal return filing and whichever post-mortem strategy is implemented. The same valuation often serves as the basis for the pipeline note, the 164(6) calculation, and any LCGE claim on the terminal return.
Pre-mortem planning reduces the problem
The most effective way to minimize the double tax exposure is to plan for it during the shareholder's lifetime. An estate freeze locks in the shareholder's value at the freeze date and shifts future growth to the next generation — reducing the capital gain that will arise on the terminal return.
If the freeze is combined with crystallization of the Lifetime Capital Gains Exemption (~$1,275,000 per individual for 2026, indexed annually), a portion or all of the frozen gain can be sheltered entirely. For a couple who both hold qualifying shares, that's up to $2.55 million in capital gains that never reaches the terminal return — eliminating roughly $675,000 in tax that would otherwise need post-mortem planning to manage.
Life insurance funding, holding company structures, and proper share class design all contribute to a cleaner post-mortem situation. The less value trapped in the deceased's shares at death, the less double tax exposure there is to manage.
How we help
Post-mortem planning sits at the intersection of valuation, tax, and estate law, and it operates under time pressure. We coordinate with the estate's accountant and lawyer to deliver the date-of-death valuation as quickly as possible — typically within the timeline needed for the first tax filings and the initial post-mortem elections.
Our role extends beyond the valuation itself. We work through the pipeline or 164(6) analysis with the advisory team, modelling the tax outcomes under different scenarios to identify the approach — or hybrid combination — that preserves the most value for the estate's beneficiaries.
Last reviewed: April 2026