What's Your Machine Shop Actually Worth?

You probably have a number in your head. Maybe it came from a conversation at a trade show. Maybe a buddy sold his place a few years back and mentioned what he got. Maybe it's just a gut feel based on years of work and what the equipment cost.

Whatever the source, that number is often wrong — sometimes high, sometimes low. Not because the owner is bad at business, but because valuation isn't intuitive. The information floating around the trades is mostly rules of thumb and they often skip over everything that actually matters.

Here's a clearer way to think about it.

The multiple everyone talks about

You've probably heard some version of "shops sell for 3 to 5 times earnings." That range gets repeated so often it sounds like a fact. But it's missing the most important part: which earnings?

Shops have messy books. Not because owners are sloppy — because the business and the owner's life are tangled together. Your salary, your truck, your health insurance, that equipment purchase you expensed last year, the one-time cost of moving the electrical panel — all of it flows through the P&L and makes the bottom line look different from what the shop actually earns.

Before any multiple means anything, you have to rebuild the number it's being applied to. That's called Seller's Discretionary Earnings — SDE. It's what the business generates for a single working owner after you add back the stuff that's personal, one-time, or discretionary. Get SDE wrong and everything downstream is wrong too.

A shop doing $2 million in revenue might show $120,000 in net income on the tax return and $400,000 in SDE once you add back owner compensation, personal expenses, and non-recurring costs. Those are two very different starting points for a valuation conversation — at a 5x multiple, it's a $1.4M variance.

Getting SDE right is the whole ballgame. It's also where most owners — and frankly, a lot of brokers — cut corners.

What actually moves the number

Two shops can have identical revenue, identical equipment, and identical SDE, and still be worth very different amounts. The multiple isn't fixed. It moves based on risk — specifically, how much risk a buyer is taking on by writing you a check.

Here's what buyers and their lenders actually look at:

Customer concentration. If one account represents 30% or more of your revenue, that's a problem. It doesn't matter how solid the relationship is. If that customer leaves, the new owner just lost a third of the business. More customers, smaller slices, higher value.

Workforce. Do you have machinists who know the work, show up reliably, and will stay after the transition? Or does the shop's capability walk out the door when you do? A shop with a stable, skilled crew is worth meaningfully more than one that depends on the owner to run every machine.

Owner dependence. This is the big one. Are you quoting every job? Running setups? The only person customers call? If the shop can't function for two weeks without you, a buyer isn't purchasing a business — they're purchasing a job. And they'll pay accordingly.

Equipment. A shop full of paid-off, well-maintained machines from the 90s tells one story. A shop with current-generation CNCs under financing tells another. Neither is automatically better — it depends on what the work demands and what the balance sheet looks like. But buyers notice the difference, and lenders definitely do.

Recurring vs. one-off work. A shop with long-term contracts or repeat customers on a regular cycle is more predictable than one that lives and dies by quoting new jobs every month. Predictability reduces risk. Reduced risk means a higher multiple.

The stuff that quietly kills deals

Some of the biggest value destroyers never show up on a financial statement. They surface during due diligence and they either kill the deal, delay it by months, or knock a significant chunk off the price.

Environmental exposure. Coolant disposal, solvent use, oil storage — if there's any question about contamination on the property, expect a Phase I environmental assessment at minimum. If something turns up, you're looking at remediation costs or a buyer walking away entirely. If you own the real estate, this matters even more.

Deferred maintenance. That roof you've been patching. The HVAC that barely keeps up in July. The parking lot. Buyers see deferred maintenance and start subtracting. They also start wondering what else has been deferred that they can't see.

Handshake agreements. If your best customer relationship lives in your head and a handshake, it has zero value to a buyer. Written agreements, purchase orders, documented terms — these are what make revenue transferable.

No process documentation. If your lead machinist knows how to set up the Okuma for that recurring aerospace job but it's nowhere on paper, that knowledge is fragile. Documented processes make the business transferable. Undocumented ones make it dependent on individuals.

What you can do right now — even if selling is years away

This is the part most owners skip because it feels premature. But the things that make a shop worth more are the same things that make it run better today. There's no downside to starting early.

Clean up the financials. Work with your accountant to separate personal expenses from business expenses. Make it easy for someone to look at your books and see what the shop earns. This doesn't mean spending more on accounting — it means being more intentional about how things are categorized.

Document your processes. Start with the jobs you run most often. Setup procedures, quality checks, material specs. It doesn't have to be fancy — a binder with clear instructions is worth more than nothing. You're building something a new owner could hand to a machinist on day one.

Develop a number two. If you're the only person who can quote jobs, talk to customers, and manage the floor, start sharing those responsibilities now. Even partial delegation changes the risk profile. A buyer who meets your shop foreman and thinks "this person could run things day-to-day" is a buyer who pays more.

Diversify the customer base. If you're leaning hard on one or two accounts, start quoting work outside your usual circle. Trade shows, referrals, RFQs you'd normally pass on. It takes time to build new relationships, which is exactly why you start before you need to.

Deal with the property stuff. If you own the building, get ahead of any environmental, structural, or deferred maintenance issues now. It's cheaper to fix a roof on your own timeline than to negotiate a discount under deal pressure.

One more thing

Most owners think about valuation as a one-time event — something you figure out when you're ready to sell. That's backwards. Understanding what drives value in your shop gives you a better framework for every decision you make between now and whenever that day comes. Invest in that machine or not. Hire a second shift or not. Take on that big contract or not.

The best time to understand what your shop is worth is before you need to know.