Selling a piece of your company is a genuinely different transaction from selling the whole thing, and owners who treat it like a mini version of a full sale usually regret it. When you sell everything, you hand over the keys and walk away. When you sell part, you are choosing who you will be in business with, on what terms, possibly for years. The terms are the deal.
The reasons are usually one of a few. You want liquidity, some cash in your pocket now, without giving up the company or its future upside. You need growth capital and would rather sell equity than borrow. You want to bring in a partner, an operator, an investor, or a key employee whose commitment you want to lock in with ownership. You are thinking about succession and want to start transferring the business gradually rather than all at once. Or you simply want to take some risk off the table after years with everything tied up in one asset. Each of those points to a slightly different structure, which is why the “why” comes first.
Almost every partial sale is one of two things. In a secondary sale, you sell some of your own existing shares to the buyer. The money goes to you, your ownership drops, and the company’s share count does not change. In a primary issuance, the company creates and sells new shares to the buyer. The money goes into the company to fund growth, and everyone’s percentage, including yours, is diluted to make room. The distinction matters enormously: one is you cashing out a slice, the other is the business raising money. Many deals blend the two. Getting clear on which one you actually want is the first real decision.
Here is where sellers often get surprised. A 30% stake is usually worth less than 30% of the whole company, because a minority interest carries no control and cannot force a sale or a dividend, so buyers apply a minority discount. The flip side is a control premium: the buyer who crosses 50%, and can actually run the company, will pay more for that power. So the same 30% can be worth very different amounts depending on what control rights come with it. This is why valuing a partial interest is its own exercise, and why the value of the business as a whole is only the starting point.
When you sell part of a company, the purchase price gets the attention, but the shareholder agreement is what you will live inside. It sets who controls the board and the day-to-day, which decisions need your consent (issuing shares, taking on debt, selling the company, changing the business), whether and when dividends get paid, and, critically, how each of you can eventually exit, through a right of first refusal, a buy-sell or shotgun clause, tag-along and drag-along rights, and what happens on a death, a dispute, or a deadlock. If you sell 30% with a weak agreement, you can find yourself outvoted on things you care about or, worse, stuck as a minority owner with no way out. Decide when you need the agreement before you sign, not after.
If you are keeping a stake, protect it. If you intend to stay in control, make sure the numbers and the voting arrangements actually leave you in control, not just above 50% on paper but able to make the decisions that matter. Keep information rights so you always see the real financials. Consider anti-dilution protection so a future round does not quietly wash you out. Build in a clear exit mechanism so you are never trapped. And put reasonable restrictive covenants on the incoming partner, so the person you just made an owner cannot compete with or walk off with the business. These are cheap to negotiate at the start and nearly impossible to add later.
Selling shares triggers a capital gain, and the structure affects the bill. If your company’s shares qualify, you may be able to shelter a large part of the gain with the lifetime capital gains exemption on qualifying small-business corporation shares, which now shelters more than $1.25 million of gain per person. Whether your shares qualify, and whether a partial sale is best done as your shares or new shares, is a conversation to have with your accountant before you agree to anything, because the difference is real money and it is hard to fix after the fact.
I act for owners selling part of a business, from the first conversation about structure through the share purchase agreement and the shareholder agreement that will govern the relationship afterward, and I coordinate with your accountant on the tax. I quote fees up front. The value here is mostly in the terms you cannot see yet, the control, information, and exit rights that decide whether selling part of your company was a smart move or a slow trap. If you are thinking about bringing someone in, a short call early, before you have shaken hands on a number, is worth a great deal.
Yes. You can sell a minority or partial stake by selling some of your existing shares to a buyer, or by having the company issue new shares to them. Selling existing shares puts cash in your pocket; issuing new shares raises money for the company and dilutes all owners. Many deals combine both.
Selling your existing shares (a secondary sale) transfers ownership to the buyer and the proceeds go to you. Issuing new shares (a primary issuance) creates new equity, so the money goes into the company and every existing owner's percentage is diluted. The right choice depends on whether you want liquidity or the business needs capital.
Usually less than its straight percentage of the whole, because a minority interest has no control and cannot force a sale or dividends, so buyers apply a minority discount. A buyer acquiring control may instead pay a control premium. Valuing a partial interest is a distinct exercise from valuing the whole company.
Yes, and it is the most important document in the deal. It governs control, board seats, which decisions need your consent, dividend policy, and how each owner can exit. Selling a stake without a strong shareholder agreement can leave you outvoted or trapped as a minority owner.
By making sure the ownership split and the voting and governance terms actually leave you in control, not just above 50% on paper. Retain the board control and consent rights over key decisions, keep information rights, and negotiate these protections into the shareholder agreement before you sign.
Selling shares triggers a capital gain. If your shares are qualifying small business corporation shares, you may shelter a large part of the gain with the lifetime capital gains exemption (now over $1.25 million per person). How the sale is structured affects the result, so get tax advice before agreeing to terms.
Put reasonable restrictive covenants, such as non-competition and non-solicitation terms, on the incoming owner, and include confidentiality and other protections in the shareholder agreement. These are far easier to negotiate when they are buying in than to add later.
It depends on your goal. Debt keeps your ownership intact but must be repaid regardless of performance; selling equity brings in capital and often a partner's skills without a fixed repayment, but permanently shares the upside and control. The right answer turns on why you need the money and who you want beside you.
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