Selling your machine shop? Know what it is really worth.
Precision machine shops are in high demand from PE-backed manufacturing platforms, aerospace/defense supply chain integrators, and medical device OEMs building vertically integrated production. If your shop has AS9100D or ITAR certification, 5-axis CNC capability, and a defense or medical device backlog — you are sitting on one of the most valuable manufacturing operations in the market.
PE-backed precision manufacturing platforms, aerospace/defense primes and Tier 1 suppliers, medical device OEMs, and larger contract manufacturers expanding capability or geographic reach. Defense-certified shops are the most actively pursued.
AS9100D/ITAR certification, 5-axis CNC capability, and a defense or medical device backlog. A shop with all three commands the top of the range because the certification barriers and capability investment create a moat competitors cannot quickly replicate.
Multiple ranges are directional and based on general market experience. Market multiples will vary based on your specific geography and market economics. Your valuation will include comparables that will establish your specific range of value.
The factors that push machine shop multiples to the top of the range.
Not all machine shops are created equal. The spread between 2.0× and 4.0× is enormous — on $800K adjusted earnings, that is the difference between a $1.6M and a $3.2M exit. Here is what separates the two.
AS9100D and ITAR certification
AS9100D (aerospace quality management) and ITAR (International Traffic in Arms Regulations) registration are the most valuable certifications a machine shop can hold. AS9100D takes 12–24 months and $50K–$100K to achieve. ITAR registration requires compliance with export control regulations that most shops cannot navigate. Together, they unlock the aerospace and defense supply chain — the highest-margin, most stable work in precision manufacturing. Buyers pay premium multiples for these certifications because they represent years of investment.
5-axis CNC capability
5-axis CNC machining centers (DMG Mori, Mazak, Haas) represent both significant capital investment ($300K–$800K per machine) and specialized programming expertise. Shops with 5-axis capability can produce complex aerospace, medical, and defense components that 3-axis shops cannot. This capability commands premium pricing and attracts the highest-value customers. A shop with three or more 5-axis machines and the programmers to run them is in the top tier of acquisition targets.
Defense and medical device backlog
A 12+ month backlog of defense program work or medical device production orders is the clearest signal of value in precision manufacturing. Defense contracts provide multi-year visibility, and medical device OEMs require FDA-validated production processes that take years to qualify. Buyers pay premium multiples for shops with locked-in production programs because the revenue is contracted, the switching costs are enormous, and the qualification barriers protect the position.
Skilled machinist workforce
CNC programmers, setup technicians, and quality inspectors who can hold aerospace tolerances (±0.0005") are among the hardest-to-recruit tradespeople in manufacturing. A shop with 8+ experienced machinists who have been there 5+ years is dramatically more valuable than one where the owner is the lead programmer. The machinist shortage is so severe that buyers will acquire a shop primarily to get the workforce.
Quality systems and traceability
CMM inspection capability, SPC documentation, material traceability (heat lot, mill cert), and first-article inspection (FAI) processes are not optional for aerospace and medical work. A shop with a functioning quality management system, current calibration records, and clean audit history trades at the top of the range. Quality system gaps or recent nonconformances suppress multiples because buyers price in the risk of customer disqualification.
Owner independence
If you are still programming every part, running the CMM, quoting every job, and managing every customer relationship — the shop depends on you. Buyers want a shop foreman, a quality manager, and a quoting process that function without the owner. Machine shops where the owner is also the lead machinist trade at the bottom of the range because the buyer is acquiring a job, not a business.
The deal structures machine shop owners need to know.
PE-backed platform acquisitions
PE firms are actively building precision manufacturing platforms — acquiring 5–15 shops to create vertically integrated production capability serving aerospace, defense, and medical. If your shop is the platform acquisition (first in a region or capability), expect a higher multiple and potentially an equity roll. Add-on acquisitions to existing platforms close faster. PE buyers focus on certifications, backlog quality, and workforce depth.
Strategic/OEM acquisitions
Aerospace primes, Tier 1 defense suppliers, and medical device OEMs acquire machine shops to bring critical production in-house. These deals carry the highest multiples because the buyer is securing their supply chain — not just buying a business. They pay for your certifications, your validated processes, and your qualified workforce. Customer concentration risk (which normally suppresses multiples) is actually an advantage when the concentrating customer is the buyer.
SBA-financed acquisitions
Smaller machine shops (under $3M) sell to individual buyers using SBA 7(a) loans. SBA underwriters value the equipment collateral (CNC machines hold value well) and predictable backlog. The key SBA concern is owner dependence — the buyer must demonstrate they can run the shop or have a shop manager in place. Clean financials with clear equipment lists and depreciation schedules are critical.
Certification transfer
AS9100D certification belongs to the entity, not the individual — but a change of ownership triggers a re-audit by the registrar. ITAR registration requires notification to DDTC. Customer-specific qualifications (Nadcap, individual OEM approvals) must be maintained through the transition. Planning for certification continuity is critical — a lapsed AS9100D or lost customer qualification can crater a deal.
The value gap
Most machine shop owners we work with are leaving $400K–$1.5M on the table by not pursuing AS9100D certification or diversifying into aerospace/defense work. Adding AS9100D opens a customer base that pays 30–50% more per part and signs multi-year production contracts. The certification investment of $50K–$100K typically returns 10–20× in increased sale value.
The wealth gap
A machine shop owner doing $5M in revenue with $800K adjusted earnings at a 4.0× multiple walks away with $3.2M before taxes. After capital gains and transaction costs, that may be $2.4M. Is that your freedom number? Most owners have not done this math. The wealth gap is the distance between your exit proceeds and the life you want after.
The readiness gap
You built this shop from a Bridgeport and a lathe. You still program every 5-axis job, run the CMM, and quote every RFQ. That expertise built the business — but it also makes it untransferable. If the shop cannot program, produce, and inspect parts without you for 90 days, the readiness gap is open.
Questions machine shop owners actually ask.
What is my machine shop worth?▸
Machine shops typically sell for 2.0–4.0× adjusted earnings. On $800K adjusted earnings, that is $1.6M to $3.2M. Where you fall depends on certifications (AS9100D, ITAR), CNC capability, backlog quality, workforce depth, and owner dependence. Defense and medical-certified shops command the top of the range.
Does AS9100D really matter that much?▸
Yes — it is the single most impactful certification for machine shop valuation. AS9100D unlocks aerospace and defense work that pays 30–50% more per part, generates multi-year production contracts, and attracts the highest-value buyers. The certification costs $50K–$100K and takes 12–24 months but typically returns 10–20× in increased sale value. Without it, you are competing in the general job-shop market where multiples are lower.
How does my equipment affect the valuation?▸
CNC equipment is typically included at fair market value as part of the total sale price. A $500K 5-axis machine does not add $500K on top — it is reflected in the margins the shop generates. That said, modern, well-maintained CNC equipment (under 10 years old) speeds due diligence, signals capability, and confirms the shop can continue producing quality parts. Aging manual equipment or CNC machines with deferred maintenance suppresses multiples.
Will my defense contracts transfer?▸
Most defense contracts are with the company entity, not the individual, and transfer with the business. However, ITAR registration requires notification to DDTC, and individual customer qualifications (source approvals, Nadcap) must be maintained through the transition. Experienced defense acquirers know this process well. The key risk: a lapsed certification or failed re-audit during transition can jeopardize the contract position. Maintaining audit-ready quality systems is essential.
How does customer concentration affect my value?▸
Customer concentration (one customer over 30% of revenue) generally suppresses multiples — unless the concentrating customer is the buyer. If a defense prime or medical OEM is acquiring you to secure their supply chain, concentration is actually an advantage. For other buyers, diversification matters: no single customer should exceed 20–25% of revenue. If you have concentration risk, diversifying over 12–18 months before sale is worth the investment.
What can I do in the next 12 months to increase my value?▸
Three highest-impact moves: (1) Pursue AS9100D certification if you do not have it — the ROI on exit value is 10–20×. (2) Train and retain CNC programmers and quality inspectors so you are not the sole expert. (3) Build a 12+ month contracted backlog with multi-year defense or medical production programs. These moves routinely add $500K–$1.5M to a machine shop exit.
Know your number
We value your machine shop using real comps from completed precision manufacturing transactions — not generic formulas. You get a professional opinion of value with adjustments specific to machining: equipment FMV, certification value, backlog analysis, and the add-backs buyers need.
Grow your value
If you have runway, Value Growth coaching helps you pursue AS9100D certification, build defense/medical backlog, train successors on 5-axis programming, and document quality systems. Each improvement moves your multiple — and we know which ones precision manufacturing buyers actually pay for.
Sell on your terms
When you are ready, we create competitive tension among PE platforms, defense primes, medical OEMs, and strategic acquirers. We negotiate the deal structure, manage due diligence including certification transfer, and sit at the closing table.
Know what your machine shop is really worth.
The first step costs nothing. Tell us about your machine shop and we will send a market intelligence brief specific to precision manufacturing in your geography in 24–48 hours. No forms to fight, no pitch attached.