Planning to sell your business: what to start five years before you exit

Most owners think about selling their business the year they decide to sell it. By then, the most valuable tax planning of their life is much harder to capture. The Canadian tax rules that make a business exit efficient are backward-looking: they measure what your company looked like in the two years before the sale, not what it looks like on the day of the deal. The owners who keep the most after tax are the ones who started acting like sellers five years before they were ones.

This article is about that runway. What to start when, and why the sequence matters as much as the actions.

The short answer

A tax-efficient sale of an incorporated business in Canada usually depends on your shares qualifying for the Lifetime Capital Gains Exemption, which can shelter up to $1,275,000¹ of gain per person in 2026. Qualification depends on your company's asset mix, ownership history, and structure, and two of the three tests look back 24 months. Layer on the time needed to purify a surplus-heavy company, to move growth to the next generation through a freeze, to clean up compensation and financials for a buyer's diligence, and to sequence the sale itself, and a realistic runway is closer to five years than five months. Owners who compress the runway don't lose the sale. They lose the shelter.

Why five years, not five months

The single most valuable thing about your exit is usually the LCGE. It can turn a roughly $1.275 million gain that would otherwise cost around $341,000 in tax at top Ontario capital gains rates into a gain that costs close to nothing. Multiplied across a family through a trust structure, the shelter can be several times that.

But the LCGE has three eligibility tests, and two of them look back over the 24 months before the sale. Your company must be a genuine active business at sale, at least 90% by asset value², and at least 50% of assets throughout the prior 24 months² must have been used principally in an active business in Canada. Newly issued shares generally have to be held for 24 months. Restructuring the balance sheet on the eve of a signed offer rarely holds up to the tests. Planning for it years earlier is what makes the shelter reliable.

That's the tax runway. The deal runway is separate and just as real. A buyer's diligence will look at three to five years of clean financials, working management not dependent on you personally, contracts and IP properly held by the corporation, and a shareholder situation with no surprises. Every one of those is fixable given time and expensive to fix without it.

The five-year runway, year by year

The specific timing will vary, but the sequence is what matters. Do these in order and each step makes the next one cheaper and easier.

Year 5: Decide, and get valued

Before anything technical, decide what you're actually planning for. There are four common exits, and they change the plan:

• Sale to a third party. The situation most of this article addresses.
• Sale to a strategic buyer or competitor. Often the highest price, longest diligence.
• Sale to family or a management team. Often lower price, more financing help from you, but more control over legacy and tax structure.
• Wind-down. No buyer; you extract the value personally over time.

Get a proper valuation. Not to price the deal, but to establish a baseline for planning. A valuation now tells you three things you can't plan without: whether your shares would currently qualify for the LCGE, whether an estate freeze would meaningfully shift growth to the next generation, and how much surplus has accumulated inside the company relative to active-business assets.

This is also the year to be honest about your own timeline and role. If you disappeared for six months, does the business run? If not, the buyer is buying you, not the company, and the price and terms will reflect that. Fixing dependency on the owner is a multi-year project.

Year 4: Structure the shares before the growth

If a freeze or a family trust makes sense, this is the year to set it up. Waiting isn't neutral. Every additional year of growth locks more future appreciation into your hands, where it will be taxed to your estate, instead of into the hands (and future LCGEs) of your spouse, children, or a family trust.

The point is not to disinherit yourself. A properly structured freeze pegs your existing value into fixed preferred shares you keep (usually with voting control and a redemption right) and directs future growth into new common shares held by the next generation. You still control the company. You still draw value out. What changes is who owns the appreciation from here on, and therefore who pays tax on it.

Done in Year 4, a freeze also opens the door to multiplying the LCGE on the eventual sale. Several qualifying shareholders can each claim their own exemption, potentially sheltering several million dollars of gain rather than one. Done in Year 1, most of the growth has already accrued to you and can no longer be shifted.

The tax-on-split-income (TOSI) rules constrain how dividends from a family trust can be distributed, so structure has to be designed with a lawyer and accountant who work in this area. But the tool exists precisely because the tax system anticipates owners planning exits over years, not months.

Year 3: Purify

By now the diagnostic from Year 5 has probably shown the most common problem: your operating company has quietly accumulated too much cash, investments, and other non-active assets to still qualify as a small business corporation. Every profitable year makes this worse. If nothing changes, the LCGE will be unavailable on the sale you're planning.

The fix is purification: moving non-active assets out of the operating company, most commonly by paying tax-free intercorporate dividends up to a holding company, so the operating company is left holding mostly active-business assets. Done well, purification restores QSBC status. Done badly (or done in year one of a five-year runway) it can bump into the $50,000 passive income rule, inadvertently create tax on the extraction, or fail to leave enough active-asset value in the operating company.

Purification is one of the most important reasons the runway needs to be long. The 24-month look-back means the company has to be clean for two full years before the sale, so this work has to be substantially finished by roughly the two-year mark. Starting in Year 3 leaves a small buffer for adjustments.

This is also the moment to review compensation. Owners approaching a sale sometimes over-compensate personally in the last year or two, hoping to reduce corporate value. Buyers see through it; the CRA sees through it; and the diligence process treats it as a red flag. Cleaner is better. Draw what makes sense for cash flow and your personal plan, and let the company hold its own weight.

Year 2: Get diligence-ready

At the two-year mark, act as if a buyer is already in the room. Everything from here on should be defensible to a diligence team.

Three areas usually need work:

• Financials. Reviewed or audited financials for the last three fiscal years, cleaned personal expenses, consistent revenue recognition, aged receivables managed. A buyer who has to normalize your statements will do so conservatively, and the price will move against you.
• Contracts and IP. Customer contracts held by the corporation (not by you personally), assignable on change of control, with the material terms in writing. Any IP (brand, code, processes, key relationships) sitting in the corporation, not with an employee who could walk. Employment agreements in place with non-solicits and, where enforceable, appropriate restrictive covenants.
• Management depth. A management team the buyer can imagine running the business without you. This is usually the hardest and slowest fix, which is why owners who wait to think about it until diligence are the ones who accept earn-outs and multi-year transition periods.

Two housekeeping items also matter here. Confirm the LCGE looks reachable, given the purification work done in Year 3. And confirm the shareholder register (including any shares issued in a freeze) has been held long enough to satisfy the 24-month share-holding test at the intended sale date.

Year 1: Prepare the deal, protect the shelter

The year before sale is more about not undoing the work than about starting new work. This is the year to:

• Confirm QSBC status with a formal review by your accountant, on the current balance sheet, with the numbers a buyer will see.
• Avoid restructuring that could reset holding-period clocks or move assets in a way that breaks the tests.
• Hire the deal team (corporate lawyer, accountant with sale experience, and an M&A advisor or broker if you're going to market) and let them shape the process, not just the paperwork.
• Decide on your post-sale plan. What proceeds are needed personally, what stays in a holding company for investment, what goes to family. The tax outcome of the sale is only half the picture; the investment and estate plan for the proceeds is the other half, and it's much easier to design before the wire hits.

If corporate-owned life insurance is part of the strategy (for example, to fund the estate tax on the frozen preferred shares you kept) it should already be in place by now. Waiting until after a sale usually means paying more for less.

Year 0: Sale

By the time you sign, the tax work is largely behind you. Closing belongs to the lawyers and to the deal itself: the price, whether you are selling shares or assets, and the terms negotiated in the final weeks. Whether the exemption applies was settled earlier, by the ownership, asset mix, and holding periods of the years before. Owners who used the runway spend closing on the deal. Owners who did not spend it on repairs.

What a compressed runway costs

To make this concrete: consider two versions of the same owner.

Owner A starts planning at Year 5. A modest freeze at Year 4 shifts future growth into a family trust. Purification through Year 3 cleans the operating company. Two clean years satisfy the look-back. On a $2.5 million gain at sale, three family LCGEs shelter the majority of the proceeds. The remaining gain is taxed at capital gains rates. Total tax on the exit: a fraction of what it would otherwise be.

Owner B starts planning at Year 1. The operating company is stuffed with retained investments and doesn't qualify as a small business corporation. Purification would still help, but not in time to clear the 24-month look-back before the buyer wants to close. A freeze at this stage can only redirect future growth, not the appreciation already sitting in the owner's shares. One LCGE is available, not three. On the same $2.5 million gain, the owner keeps the exemption on their own $1,275,000 and pays roughly $328,000 of tax on the remaining $1,225,000 at Ontario top rates.

Same business, same buyer, same price. The difference is the runway.

The bottom line

The tax rules governing a business sale reward preparation, not improvisation. The 24-month look-backs, the multi-year work of purification, the sequencing of a freeze, and the buyer diligence that compressed runways rarely survive all push the sensible planning horizon out to about five years. The owners who capture the most value on exit are the ones who started acting like sellers before they were.

The question worth asking: If a serious buyer showed up in two years, would your shares qualify today and would your company hold up in diligence? If either answer is uncertain, that uncertainty is the most important thing to resolve. Not later. Now.