Corporate double taxation at death

A corporation is a separate person for tax purposes, which is useful during your life and creates a specific problem at the end of it: the value gets taxed once as your shares and again as the company’s assets, and nothing automatically prevents the overlap.

The two layers

On death you are deemed to have disposed of your shares at fair market value. The gain over your share cost base is realised, and 50% of it is taxable in the terminal return. That is layer one, and it is unavoidable.

The estate now holds shares in a company full of assets. To get those assets to the beneficiaries the company must distribute them — as a dividend, which is taxable to whoever receives it. That is layer two, on substantially the same value.

What reduces it

A spousal rollover, which defers the share disposition to the second death. It buys time; it does not solve the problem.
The capital dividend account, which can pay out tax-free and directly reduces the second layer. A corporation with a healthy CDA has part of the answer already sitting in it.
Corporate-owned life insurance, which credits the CDA on the death benefit and is the most common purpose-built solution — expensive, and aimed precisely at this.
Post-mortem planning by the estate: a pipeline, or a loss carryback within the first year, each of which converts one of the two layers into something cheaper. Both have strict deadlines measured in months.

The deadlines are the reason this appears in an education series rather than only in an accountant’s office. Several of the remedies must be executed by the estate within the first year, which means the executor has to know they exist.

What Sam’s corporation exposes

Sam — 41, British Columbia, self-employed through a corporation. No employer pension, no home yet, and a company that pays them both salary and dividends.

Sam’s corporation is worth $2,678,188 by 60 against a share cost base of $1,000. Essentially the entire value is accrued gain, because the company was built from nothing rather than purchased.

Sam's corporation is worth $2,678,188 against a share cost base of $1,000, so almost the whole value is accrued gain — taxed once as a share disposition at death and again when the assets inside are distributed. — Value against cost base. The gap is what both layers of tax apply to.

A nominal cost base is normal for a founder and it is what makes the exposure so large. The projection flags this situation when the corporation’s retained value exceeds the share cost base at death, and strips the capital dividend account tax-free first — which is the one mitigation it can model without inventing a planning structure that does not exist yet.

The uncomfortable implication

Everything in episode 59 argued for leaving money inside the corporation to compound. This episode is the bill for having done it indefinitely. The deferral is real, and so is the cost of never ending it.

Which reframes the drawdown question for an owner-manager. Distributing steadily in retirement — paying personal tax gradually at moderate rates — is the corporate version of the meltdown strategy from episode 52, and it is aimed at the same problem: a large deferred balance arriving all at once in a terminal return.

The estate summary includes the corporation’s value and the tax the deemed disposition triggers, and flags the double-tax exposure when retained value exceeds the share cost base.

See the exposure in your plan

Next: married versus common-law — what actually differs, and what people assume wrongly.

GlidePathEngine is an educational planning tool — not financial, investment, tax, or legal advice.