Control Premium
Additional amount paid to secure a majority stake (51%+) in a business. A buyer who holds control can drive all strategic decisions, which justifies a price above the proportional value of the shares.
Definition
The control premium is the difference between the price paid for a stake that confers control of a business and the proportional value of that stake calculated from the total value.
In French-language Quebec documentation, you’ll see prime de contrôle used for the same concept.
In other words, a buyer will pay more per share to secure 51% or more, because that position gives them full decision-making power: choice of management, dividend policy, corporate strategy, and eventual resale.
In the Quebec SME market, the control premium usually ranges from 15% to 40% above proportional value, depending on the sector, the size of the business, and how much effective control the stake provides.
Why the control premium matters in a business sale
If you sell 100% of your shares, you automatically benefit from the full control premium — that’s the best-case scenario for a seller. The buyer gets absolute control and pays accordingly. No complications, no discount.
Things get more complex when several shareholders are involved. If you hold 40% of a business and want to sell your stake alone, without the other shareholders selling at the same time, your stake will be valued with a minority discount.
That discount can cut the value of your shares by 20% to 35% compared with their proportional value. It’s the exact opposite of the control premium, and the financial impact is substantial.
That’s why the shareholders’ agreement is a critical document well before going to market. It should include joint-sale mechanisms (drag-along, tag-along) that either force or allow the simultaneous sale of all shares.
Without those protections, a minority shareholder can end up stuck with a stake that’s hard to sell and discounted.
What every seller should know
- Selling 100% of the business in a single transaction gives you the maximum control premium — almost always the optimal scenario for the seller.
- A shareholder selling a minority stake (less than 50%) faces a discount of up to 20% to 35% below the proportional value of their shares.
- The shareholders’ agreement should include joint-sale clauses (drag-along, tag-along) to avoid situations where a partner blocks or is forced into a sale.
- If you have co-shareholders, align your sale intentions as early as possible — a combined sale of 100% of the shares maximizes value for all sellers.