How to Know What Your Business Is Worth
Most business owners have a rough idea of what their business is worth. Usually it's based on what a friend sold their company for, what they've heard about multiples in their industry, or honestly, just a number that feels right. But what a business is actually worth and what an owner thinks it's worth are almost never the same number.
I've been on both sides of this. As a CFO I've purchased companies, sat through due diligence, watched deals succeed, and watched deals fall apart. And the gap between a seller's expectations and what a sophisticated buyer is actually willing to pay is one of the most painful and avoidable surprises in business. So today I want to walk you through how a real buyer looks at your business, what they're calculating, and what that number says about whether you're actually building value.
The 3 Main Business Valuation Methods
There are three main approaches to valuing a business and they build on each other.
The first is the income approach, which uses a discounted cash flow model, or DCF. This is where you look at three to five years of historical financials, build out a five to seven year forecast, and then apply a continuing value formula to account for the life of the business beyond that forecast period. Every assumption goes into the model: revenue growth, gross margin, overhead, capital expenditures, free cash flow. You discount all of it back to today's dollars because a dollar today is worth more than a dollar in the future, account for net debt, and arrive at enterprise value. It's the most accurate picture of what your business is actually worth.
The second is the multiples approach, which is shorthand for the income approach. Instead of building the full model, you look at what similar companies have sold for in the market and apply that multiple to your own earnings. Most people have heard something like "businesses sell for four times EBITDA." That multiple is a compressed version of everything the income approach produces. Behind every transaction there's a more detailed model, but the multiple is how most people talk about it.
The third is the asset-based approach, which looks at the market value of your assets if you liquidated everything today. This is the floor. You're not going to sell your business for less than what you'd get by converting everything to cash, so this approach tells you the minimum, not the target.
The Business Valuation Formula Every Buyer Uses
For most businesses, valuation comes down to one equation: EBITDA times a multiple. EBITDA stands for earnings before interest, taxes, depreciation, and amortization, and it's the starting point for most transactions. Most businesses sell somewhere between three and eight times EBITDA, though that range moves significantly depending on size, industry, and a handful of other factors.
But here's what most owners don't realize. A buyer isn't just looking at your EBITDA number. They're looking at the quality of your EBITDA. Is it stable or does it swing wildly year to year? Is it real or is it dressed up? Can the business generate those earnings without you in it? The answers to those questions directly impact the multiple a buyer is willing to pay. Which means two businesses with identical EBITDA can sell for very different prices.
What Increases Business Value
The first thing that attracts a buyer is revenue growth, but with a caveat. Growing profitably within your sustainable growth rate is attractive. Growing at any cost is dangerous. I've seen business owners so focused on building toward an exit that they chase revenue without watching cash flow, and they grow themselves right out of business before they ever get to the closing table. Revenue growth has to be within what the business can sustain without taking on excessive debt or giving up equity.
The second thing is revenue retention. Sticky revenue makes a business significantly more valuable. This is one of the reasons construction companies often sell at very low multiples, sometimes just one to one and a half times book value. When a buyer looks at a pure get-work-do-work contractor, there's not much to buy because the revenue has to be won again every single year. But a landscaping company that does design-build work and also carries multi-year maintenance contracts is a different business entirely. That recurring revenue stream changes the valuation conversation. The metric I use here is net revenue retention, or NRR, which measures how revenue from an existing customer set grows or shrinks over time. High and improving NRR is one of the clearest signals of a healthy business.
The third thing is a strong sales and marketing engine, measured by your lifetime gross profit compared to your customer acquisition cost. If you spend one dollar to acquire a customer and earn five dollars in lifetime gross profit, you have a machine. Anything above a three to one ratio is solid. It tells a buyer that the more capital they put into your sales and marketing function, the more gross profit comes out the other side.
What Destroys Business Value
The first and biggest value detractor is key person risk. If the business can't run without you, a buyer is going to discount heavily, sometimes thirty to fifty percent off your valuation. I've been working with a company for years whose owner has built something truly impressive. But his identity is so tied to the business that walking away from it is almost unimaginable to him. He knows it's a problem when it comes to selling, but changing that dynamic is hard. The fix is to start documenting processes, building a leadership team that can operate independently, and testing whether the business can genuinely function without you for an extended period.
The second detractor is customer concentration. If ten percent of your customers account for eighty percent of your revenue, a buyer sees a fragile business. One lost relationship and the economics collapse. Spreading revenue across a broader customer base, even if it means saying no to certain clients or aggressively upselling smaller ones, protects your valuation.
The third is single channel risk. Whether you get most of your leads from one platform, most of your revenue from one referral source, or most of your business from one type of client, concentration in any channel creates risk. Buyers want consistency. They want to know the business will perform for them the way it performed for you.
The fourth is capital intensity. If your business requires heavy reinvestment in equipment, vehicles, or infrastructure just to maintain operations, that eats into free cash flow and shrinks your valuation. I worked with a mechanical contractor years ago who was trying to sell, but just to keep the business running a new buyer would have needed to put in ten million dollars on day one in capital expenditures. That killed the deal. Where you compete and how you compete has a direct impact on how capital intensive your business is, which is another reason strategy and valuation are so closely connected.
Beyond those, a few others worth mentioning. Market risk, meaning if you're in a declining industry that's going to show up in your multiple. Systems risk, meaning if your processes aren't documented and the business runs on tribal knowledge, buyers will discount for it. And data risk, meaning if you can't pull clean reliable financials quickly, that's a red flag in any due diligence process.
Why Business Valuation Matters Even If You're Not Selling
Understanding how a buyer values your business is useful even if you have no intention of selling. It tells you exactly what to focus on to build a more valuable company, which is also a more profitable, more resilient, and more enjoyable company to run. Revenue growth, sticky customers, a strong sales engine, low key person dependency, and clean financials aren't just things that matter at exit. They're the foundations of a great business at any stage.
I went deep on all of this in this week's episode of Strategy Meets Finance. If you want the full breakdown, including the specific valuation formulas and how to think about continuing value, give it a listen: The Number That Tells You If Your Business Is Worth Buying | Ep 233
