How Do I Value a Business to Buy Out My Partner Fairly?

Peter Lopez
1 day ago
5 min read

A professional yet casual business meeting between two partners over coffee.

Buying out a partner is rarely just about the numbers. Whether you’re an "Operator" like Mark, who’s been under the hood of the business for a decade, or a "Planner" like Linda, who has been steering the ship behind the scenes, a buyout is a massive life event. It’s the moment where the "shop talk" ends and the real-world financial reality begins.

I’ve spent over 8 years as a business broker and have completed more than 100 valuations. I’ve seen these deals go perfectly, and I’ve seen them turn into multi-year legal battles that drain the company dry. The difference almost always comes down to how you approach the valuation.

If you’re asking, "How do I value a business to buy out my partner fairly?" you aren't just looking for a spreadsheet formula. You’re looking for a way to move forward without burning bridges or overpaying for what you already helped build.

Why "Fair" is More Than a Feeling

In the world of small business: whether it’s a high-volume auto repair shop or a niche manufacturing plant: "fair" is grounded in market reality. I tell people all the time: your business is worth what a willing buyer would pay for it today, not what you think it should be worth because of the late nights you put in.

When you’re buying out a partner, you’re essentially acting as that "willing buyer." To keep things fair, you need a process that both of you can agree on before you even look at the final number.

Step 1: Start with SDE (Seller’s Discretionary Earnings)

For most small businesses with revenues under $5 million, the gold standard for valuation isn’t some complex corporate formula. It’s SDE (Seller’s Discretionary Earnings).

If you’ve read my previous breakdown on EBITDA vs. SDE, you know that SDE is designed to show the total financial benefit a single owner-operator gets from the business.

The SDE Formula

To get to SDE, you start with your net profit and "add back" the expenses that won't exist for a new owner. This includes:

Owner’s Salary: What you and your partner actually paid yourselves.
Health Insurance & Perks: Those family cell phone plans or the company truck.
Depreciation & Interest: These are "paper" or financing costs that don't reflect the daily cash flow.
One-Time Expenses: That one year you had to replace the entire roof or settled a one-off legal dispute.

Decipher Your Value clean professional workshop office with a business owner reviewing financial documents and no visible branding.

I’ve seen dozens of owners kill their own sale price by hiding too many personal expenses in the books without keeping track of them. When it comes to a partner buyout, you both need to be 100% transparent about these common financial mistakes to ensure the SDE is accurate.

Step 2: The Partnership "Adjusted" SDE

Here is where it gets tricky for partners. If both you and your partner work in the business, the SDE is naturally higher because it includes two salaries. But the business can’t be valued based on two people’s pay if one of you is leaving.

To find a fair value:

Add back both salaries to the profit.
Subtract the cost of hiring a manager to replace the leaving partner.

This gives you a "Normalized SDE" that reflects what the business actually produces after the work is done. It levels the playing field so neither of you is getting a "free ride" on the other’s labor during the valuation process.

Step 3: Finding the Right Multiple

Once you have your SDE, you apply a multiple. This is the number that represents how many years of profit the buyer is willing to pay upfront.

In my experience, most small service or manufacturing businesses trade between 1.5x and 3.0x SDE.

1.5x - 2.0x: Usually for businesses that are heavily dependent on the owner, have declining sales, or messy books.
2.5x - 3.0x+: For businesses with "clean" financials, a strong team that stays when you leave, and recurring customers.

To get a quick sense of where you land, you can use a Business Valuation Snapshot tool to see how market multiples apply to your specific numbers.

A close-up of financial documents and a calculator on a desk.

Step 4: Don’t Fall for the "Minority Discount" Trap

In the corporate world, if you own 20% of a company, that 20% is often worth less than 20% of the total value because you have no control. This is called a "minority discount."

However, in a fair partner buyout between two people who have built a business together, I almost always advise against using discounts. If you’re 50/50 partners and the business is worth $1 million, the fair buyout is $500,000. Applying a discount to your partner’s share is a fast way to turn a professional negotiation into a personal grudge. Keep it pro-rata: it’s cleaner and much more respectful of the time they’ve invested.

Step 5: Dealing with Assets and Debt

The SDE multiple typically values the operations of the business: the "cash flow machine." It doesn't always account for everything on the balance sheet.

You need to sit down and agree on how to handle:

Cash in the bank: Does it stay with the business or get split now?
Equipment: If you’re in manufacturing, is the equipment fully paid off? If not, the debt needs to be subtracted from the final value.
Inventory: Is there $50k of parts sitting on the shelf? Usually, inventory is added on top of the SDE-based value.

A manufacturing facility floor viewed from a clean office window.

The Emotional Reality of the "Fair" Buyout

I’ve stood on plenty of shop floors where partners who were best friends for twenty years couldn't look each other in the eye because of a buyout dispute. It’s usually because one person feels their "sweat equity" isn't being valued, while the other feels they are taking on all the future risk.

My advice? Use a neutral, market-based method like the SDE multiple. It removes the "I think" and "I feel" from the conversation. When you can point to real-world data and say, "This is what the market says our auto shop is worth," it takes the target off your back.