Which structure fits follows from what you want after closing. Full retirement points to an outright sale. Liquidity plus continued growth points to rollover equity with a sponsor. A gradual handover points to a buy-in and buy-out.
This guide covers the structures buyers use, why the percentage you sell is not the percentage you own, how valuation changes on a partial stake, and the tax questions for your CPA.
Key Takeaways
- A partial sale can mean a minority stake, a majority recapitalization or a divestiture
- A 20% rollover does not buy 20% of the new company; the debt in the deal changes the arithmetic
- Rollover equity is the second bite; in one documented case the retained stake more than tripled before the second exit
- Pick the structure from your objective, not from the headline price; stock sales and asset sales also carry different tax outcomes
Why Business Owners Sell Part of Their Business
Most founders have the bulk of their net worth in one company. That concentration creates risk even when the business is thriving, and a partial sale reduces it without leaving.
Common reasons owners pursue a partial sale:
- Liquidity without full exit: Taking cash off the table while keeping a stake in future upside
- Succession and legacy planning: Selling an interest to a successor, key employee or family member while keeping control
- Growth capital and expertise: Bringing in a partner with capital, connections, or operating know-how
- Strategic divestiture: Selling a non-core division to focus resources on the most profitable part of the business
Institutional capital is actively looking for these deals. But willingness to buy is not willingness to buy yours. A good business is not automatically an institutional-quality asset: profitable but not yet transferable, with EBITDA but not yet earnings quality, with managers but not yet management depth. That gap bites harder in a partial sale, because the buyer wants you to stay.
Ways to Structure a Partial Business Sale
Selling a Minority Interest (Less Than 50%)
A minority sale lets you raise capital or bring in a partner while keeping day-to-day control. The tradeoff: minority stakes are harder to sell, because most buyers want control when they write a check.
That is why buyer selection should start from your own objective rather than the price. The group willing to take a non-controlling position is narrow:
- Private equity firms underwriting future growth rather than immediate control
- Family offices, which run longer horizons than a fund and value continuity and cultural alignment
- Investors backing a strong management team without needing majority ownership
Selling a Majority Interest (Recapitalization)
When you want a full institutional partner rather than a minority check, a recapitalization is the usual path: you sell 50% or more, typically to a private equity buyer, and reinvest part of your proceeds into the new company as rollover equity.
On a $25,000,000 enterprise value, 80% cash at closing is $20,000,000 and a 20% rollover is $5,000,000. Sponsors encourage it because it aligns incentives: the founder who stays has real money riding on the outcome the buyer is underwriting. That rolled stake is the second bite of the apple.
- Take a substantial cash payment at closing
- Keep growing the business across the four to seven years a fund holds a platform
- Exit the remaining stake at a second liquidity event
In one Exit Boston-advised recap the founder sold at 6.4x EBITDA and kept a 20% rollover then worth $4.35 million. Over 4.5 years EBITDA grew from $3.4 million to $9.0 million, and that same 20% was worth $14.76 million when the sponsor sold. The founder had expected roughly $16 million at the outset; the two events together exceeded $32 million. That is one documented outcome, not a promise.
Selling a Division or Business Unit (Divestiture)
Not every partial sale is an equity stake in the whole company. A divestiture sells one segment or product line while you keep the rest, usually to a strategic buyer that sees operating synergies and wants full control of what it buys.
Carve-out readiness drives the timeline:
- Standalone divisions with their own P&L are far easier to sell
- Shared revenue, costs or systems mean a longer separation
- Clean financials attract stronger interest
Valuing a Partial Stake or Division
EBITDA multiples and discounted cash flow do not simply scale down to a percentage or a division. Adjustments are required, and the first one catches most sellers by surprise.
The Percentage You Sell Is Not the Percentage You Own
A rollover is quoted as a share of your proceeds, not of the new company. Those are different numbers, and debt creates the gap.
Take a New Hampshire precision aerospace machining business with roughly $8.5 million of EBITDA. Early indications clustered around 6.0x. After preparation the accepted offer valued it at 7.2x, an enterprise value of $61.2 million, and the founder rolled 20% of proceeds, $12.24 million, into the new company. Senior bank debt at 2.5x EBITDA, $21.25 million, cut the equity the sponsor had to write, so net equity came to $39.95 million. That $12.24 million bought 30.6% of the new company, not 20%.
Equity, not price, is the denominator. Ask what the new company's total equity will be after debt and private credit before you agree to a rollover percentage.
Allocating Shared Costs and Revenue
When preparing a standalone pro forma for one unit, you need to separate:
- Revenue directly tied to that division
- Direct costs (labor, materials, dedicated overhead)
- Shared corporate costs (finance, IT, leadership) that need fair allocation
- Any transition-service costs the division would incur standing alone
Control and Marketability Discounts
A non-controlling interest generally sells for less than a comparable controlling stake, a discount for lack of control (DLOC). A separate discount for lack of marketability (DLOM) reflects the extra time and cost of liquidating a private-company interest.
Neither discount has a fixed, universal percentage. Both depend on your ownership structure, voting rights, and governing documents.
Negotiating Synergy Value
Buyers pay differently for cost synergies (eliminating duplicate overhead) versus revenue synergies (cross-selling, new markets). Negotiate to capture a share of those gains rather than leaving all the upside with the buyer.
Multiples move with growth potential, recurring revenue, management strength, market size, scalability and reporting quality, so Exit Boston pairs valuation work with buyer-specific positioning.
Legal and Tax Considerations
Stock Sale vs. Asset Sale
- Stock sale: You sell shares or an equity percentage. The IRS generally treats proceeds as capital gain.
- Asset sale: The buyer purchases specific assets or an entire division. The IRS treats this as a sale of individual assets, requiring Form 8594 to allocate the purchase price.
Divestitures of a single business unit are almost always structured as asset sales, since you are carving out specific operations rather than transferring the parent entity's shares.
Tax Treatment
For 2025, the IRS caps most long-term capital gains at 15% for the majority of individuals, with rates of 0%, 15%, or 20% depending on income. Short-term gains are taxed as ordinary income.
Strategies worth discussing with a tax advisor:
- Installment sales (IRC Section 453): Spread gain recognition over the years you receive payments
- Qualified Small Business Stock (QSBS) exclusion: Recent law changes raised the exclusion cap to $15 million for qualifying C corporation stock
Every deal's tax picture depends on entity type, holding period, and whether the sold interest actually qualifies for these benefits. Do not assume anything without a professional review.
Review Your Governing Documents
Before bringing in a new owner, check your operating agreement or bylaws for:
- Rights of first refusal
- Anti-dilution clauses
- Buy-sell provisions and transfer restrictions
Selling to a Business Partner or Co-Owner
Selling your stake to a remaining partner is often the cleanest partial exit, if you can agree on value. Setting the price takes more than a gut-feel number.
Common approaches:
- Fixed price: Simple, but goes stale if it is not updated
- Formula-based: A pre-agreed calculation, often tied to EBITDA multiples, applied at exit
- Independent appraisal: One joint appraiser, or two plus a tiebreaker if they diverge
Well-structured partnerships lock this in with a buy-sell agreement drafted before emotions run high, and a neutral valuation advisor beats either partner's own number.
Where the incoming partner cannot fund the whole purchase, the deal becomes a buy-in and buy-out: control transitions gradually over several years instead of at one closing. The other bridge is a seller note. On a $25,000,000 price that might be $18,000,000 cash at closing against a $7,000,000 note. Understand what it makes you: a lender to the company you used to own, carrying its credit risk and paid only if it performs.
Is Selling to Private Equity Worth It?
The case for it:
- Growth capital and operational resources
- A defined path to a larger second exit inside a fund's four to seven year hold
- Rollover equity that can appreciate significantly if the business scales
The case against it:
- Reduced day-to-day control, often including board oversight
- Pressure to hit growth targets set by the new majority owner
- Misalignment if the buyer's timeline or goals differ from yours
The harder question is which offer to accept, and the headline will not answer it. Set $25 million all cash at closing against $30 million paid 70% cash, 20% rollover and 10% earnout. The second is $5 million larger on paper and can be worth less. Four things decide it: buyer credibility, the odds of hitting the earnout targets, what the rollover could be worth at a second exit, and your own goals.
PitchBook's 2025 report shows U.S. middle-market PE deal value climbing to $410.7 billion, up 8.5% year over year, so capital is available. Competition for it is the one thing a founder cannot manufacture alone: per Axial, companies working with professional M&A advisors are 60% more likely to complete a sale, at prices 6% to 25% higher than unrepresented sales of comparable businesses.
Frequently Asked Questions
Can I sell 50% of my business?
Yes, but an exact half requires clear governance terms since neither party holds outright control. Deadlock provisions in the operating agreement are essential.
Does a 20% rollover mean I own 20% of the new company?
No. A rollover is a share of your proceeds, not of the new company's equity. In one deal a $12.24 million rollover, 20% of proceeds, bought 30.6% of the new company.
What percentage should I give my business partner?
There is no fixed rule. It depends on capital contribution, sweat equity, and negotiated value. Document the split in a buy-sell agreement before it matters.
How do you calculate the value of a business to sell?
Enterprise value is adjusted EBITDA times a multiple; equity value is that figure less net debt. Partial sales need further adjustment for control and marketability discounts.
How much tax do you pay when you sell shares in a company?
Proceeds are generally subject to capital gains tax, at a rate depending on holding period and deal structure. Consult a tax advisor before finalizing terms.
How do I get out of a business with a partner?
Common paths are a negotiated buyout with a third-party valuation to set the price. A seller note or a staged buy-in and buy-out often beats a single lump sum.
Is selling to private equity worth it?
It depends on your objective after closing. Liquidity plus continued growth favors a rollover with a sponsor. Wanting to be finished favors an outright sale.
