When Your Spouse Is a Minority Shareholder: Equalization Complications in Ontario

A business isn’t always owned outright by one spouse. Sometimes a spouse holds a smaller slice — a minority stake in a family business, a professional corporation, or a private company with other shareholders. Minority shareholder equalization raises questions a wholly-owned business doesn’t, because a minority stake usually isn’t worth a simple pro-rata share of what the whole company is worth.

If your spouse (or you) owns part of a company, understanding why that stake gets discounted — and by how much it’s reasonable to discount it — matters before you agree to any number.

Why a Minority Stake Is Worth Less Than Its Pro-Rata Share

If a spouse owns a fraction of a company’s shares, the value assigned in equalization typically isn’t simply "the whole company’s value multiplied by the ownership percentage." A minority holder generally can’t unilaterally control decisions, direct the business, force a sale, or compel dividends the way a majority or sole owner can — and a valuator typically applies discounts to reflect that reality.

The Two Discounts That Usually Apply

Discount for lack of control (DLOC)

Reflects that a minority shareholder can’t direct the company on their own: they can’t decide major transactions, set executive pay, control dividend policy, or force a sale, and their vote alone doesn’t determine the outcome.

Discount for lack of marketability (DLOM)

Reflects that shares in a private company — especially a minority stake — are far harder to sell than a comparable public-market investment. There’s no ready buyer, no public market price, and often contractual restrictions on transfer.

Both discounts are determined by the valuator based on the specific company and shareholding. There’s no fixed percentage that applies across every case, and any number you see quoted as a "typical" discount online should be treated with real skepticism until a qualified valuator has actually looked at your facts.

Other Factors That Complicate a Minority Stake

• Shareholder agreements. Many private companies have agreements restricting who shares can be sold to, and on what terms — which affects both value and how a spouse might ever realize that value.
• Buy-sell or right-of-first-refusal clauses. These can limit a spouse’s practical options for cashing out a stake.
• Family or closely-held businesses. Where other shareholders are relatives or business partners, the practical dynamics of the case can involve more than just the two spouses, even though those other shareholders aren’t parties to the family law matter itself.

How a Valuator Approaches the Discounts

A valuator typically starts by establishing the value of the company as a whole, using one of the standard business valuation approaches, and then applies discounts specific to the minority holding itself. The size of each discount depends on facts particular to that company: how actively it pays dividends, how restrictive its shareholder agreement is, whether other minority holders have ever successfully sold their shares, and how realistic a sale of the stake actually is. Two companies of similar size and value can end up with very different minority-stake discounts because of these differences.

What This Means Practically

Because both the underlying company’s value and the size of any discounts require professional judgment, minority shareholdings are one of the areas where a qualified business valuator’s report matters most — informal estimates are especially unreliable here. The equalization payment owed typically reflects the discounted value of the stake, not a simple percentage of the whole company’s worth.

Frequently asked questions