Start with the tax bill your shares create
The organizing problem of a business owner's estate plan is that death is a taxable event for your shares. You are deemed to have sold your private-company shares at fair market value the moment you die, and the capital gain lands on your final personal return even though nobody sold anything and no cash arrived. Shares left to a spouse or a spousal trust roll over at cost and defer the whole question until the second death, which is why so much owner planning is really second-death planning.
Left unmanaged, the same value can be taxed more than once: the estate pays tax on the gain in the shares, and the family pays tax again pulling the underlying corporate assets out as dividends. Post-mortem planning exists to collapse that double layer, through a loss carryback inside a tight early window of the estate, or a pipeline that lets value exit against the estate's stepped-up cost base, and the estate plan should say in advance which route the executor is expected to take. The mechanics are on our page about how private-company shares are taxed at death, and executing them is defined-scope work under our post-mortem planning service.
Two reliefs shape the size of the bill before any strategy does. If your shares qualify as qualified small business corporation shares, the lifetime capital gains exemption shelters up to $1.25 million of gain per person, but qualification has asset-purity tests that fail quietly while nobody watches. And the estate and trust tax layer matters too: a graduated rate estate enjoys favourable treatment for its first three years, which is part of why wills should be drafted with the estate's tax life in mind, not just the distribution of property.
The documents, and what each one settles
An owner's estate plan is a set of instruments that each settle one question, and the test of the plan is whether the answers agree with each other. This is the full inventory:
| Component | What it settles | Who leads |
|---|---|---|
| Primary and secondary wills | Who inherits what, and which assets stay out of probate | Lawyer, with CPA input on the tax clauses |
| Powers of attorney, property and personal care | Who decides and who signs while you are alive but unable | Lawyer |
| Shareholder agreement | What happens to the shares on death or disability: buy-sell, price, funding | Lawyer and CPA together |
| Estate freeze and family trust | Caps your taxable value at today's number and directs future growth | CPA, papered by the lawyer |
| Life insurance | Where the cash for the tax bill or the buyout comes from | Insurance advisor, sized by the CPA |
| Business valuation | The number every other document prices from | CPA, or a valuator for high-stakes files |
| Succession plan | Who runs the company the Monday after, and on what authority | You, facilitated by the CPA |
The coordination failures are predictable and expensive. A will that leaves shares to the children while the shareholder agreement obliges the estate to sell them to a partner. A freeze done years ago that the will was never updated to reflect. Insurance owned in the wrong entity for the buyout it is supposed to fund. Every document was professionally prepared; the plan still fails, because nobody read them side by side.
Dual wills and the probate math on shares
In Ontario, private-company shares are the classic reason to have two wills. Estate administration tax runs at roughly 1.5 per cent of estate value above a small exempt band, and it applies to assets that pass under a probated will. Shares of a private corporation generally do not need probate to transfer, the corporation's own records effect the change, so a secondary will covering the shares and other private assets keeps their value out of the probate calculation entirely. On a business worth several million dollars, that is a five- or six-figure saving for the cost of a second document.
The structure only works if it is maintained. The two wills must divide assets cleanly, the executors must be chosen with the split in mind, and new holdings need to land in the right will as your structure evolves. This is a lawyer's document with a CPA's inputs: which assets can actually transfer without probate, and what the corporate records must show for that to hold.
Freezes, trusts and when to cap the liability
An estate freeze is the single most powerful move on the corporate side of the plan, because it converts an open-ended future tax bill into a known number. You exchange your common shares for fixed-value preferred shares worth today's value, and new growth shares, often held through a family trust, capture everything the business becomes from here. Your terminal-return liability is now capped and, crucially, insurable and plannable, while the next generation's value builds outside your estate.
The refinements carry their own clocks and caveats. A trust faces a deemed disposition of its assets every 21 years, so the trust's endgame has to be designed at the start, not discovered in year twenty. Growth shares spread across family members can multiply access to the lifetime exemption on a future sale, subject to the qualification tests. And freezing too early, or too completely, can leave a younger owner without enough participation in their own upside, which is why refreezes and partial freezes exist. The wider strategic picture, including when a freeze is premature, is on our page about estate planning for Canadian business owners.
Liquidity: where the money to pay the tax comes from
A plan that computes the tax but not the cash is half a plan, because the terminal tax bill arrives while the wealth is still locked inside a private company. Without a funding answer, executors are left choosing between borrowing against the business, stripping its working capital, or selling it on a deadline, and forced sales are where family businesses go to be underpriced.
Corporate-owned life insurance is the standard answer, and it is tax-efficient in a specific, mechanical way: on death, insurance proceeds credit the corporation's capital dividend account to the extent they exceed the policy's cost base, and capital dividends flow to shareholders tax-free. Sized against the frozen liability and the shareholder agreement's buyout, one policy can fund the tax, the buyout or both. Farm businesses deserve their own footnote here: qualifying farm property and family farm corporation shares can roll to children with the tax deferred rather than triggered, which changes both the liability and the insurance math, something we work through with incorporated farm businesses directly.
The facts that change the plan
No two owner estate plans should look alike, and these are the six facts that do most of the shaping. When one of them changes, the plan is due for a review:
- Whether you have a spouse. The rollover defers everything to the second death, so single owners and blended families carry nearer-term liabilities and harder equalization questions.
- Which children are in the business. Leaving the company to the child who runs it and equal value to the others is the classic problem insurance and holdco assets exist to solve.
- Value and growth rate. A fast-growing company makes freezing early cheap; a stable one makes timing less urgent and valuation more contestable.
- LCGE qualification. Whether the shares pass the qualified small business tests, and whether passive assets are quietly breaking them, changes the bill by up to $1.25 million of sheltered gain per person.
- Structure already in place. An existing holdco, trust or prior freeze constrains and enables different moves than a single operating company.
- Where the insurance sits. Personally owned, corporately owned or absent produces three different funding plans and two different tax outcomes.
Keeping it coordinated, and who should build it
The plan needs one professional reading every document against the others, and in owner-managed businesses that coordinating seat is naturally the CPA's, because the corporate structure, the valuation and the tax math all live there. The lawyer drafts the wills, powers of attorney and agreements; the insurance advisor places the coverage; the CPA runs the numbers that tell them both what to draft and how much to place, then rechecks the whole assembly when the facts move: a marriage, a shareholder change, a big jump in value, a freeze, a sale conversation.
That is what business estate planning looks like from a CPA in Ontario: not a document you sign once, but a structure reviewed on a cadence, with the deemed-disposition number, the funding gap and the succession answer kept current. We run these as defined-scope Strategic Projects, coordinated with your lawyer and advisor, with scope and fee in writing after a free 15-minute discovery call. If your current plan is a will from before you incorporated, that call is overdue in the most fixable way.
