How to Sell a CNC Machine Shop

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  Key takeaways
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  Know what your shop is worth before you sell a CNC machine shop
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  Prepare records a buyer will accept
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  Run a machine and process audit
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  Handle due diligence without losing the deal
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  Plan the handover and after-sale support
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  Step by step: how to sell a CNC machine shop
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  Strategic buyer vs financial buyer

Most owners start with a revenue multiple. Buyers start with the equipment list. In job-shop deals, the machine base, its hours, and its maintenance records carry more weight than the past two years of P&L. A 127-machine floor with 16 simultaneous 5-axis centers is a different asset than 40 three-axis mills, even at the same revenue.

Pull three valuation numbers before you list. Asset value is the resale price of each machine plus tooling, fixturing, and inspection equipment. Earnings value is a multiple of adjusted EBITDA, usually 3x to 5x for a shop under 10 million USD in revenue. Market value is what comparable shops actually sold for in your region in the last 18 months.

Adjust the earnings number for owner compensation. If you pay yourself below market and run the quoting desk yourself, a buyer will add that salary back as a cost. Same for family members on payroll who do not hold a real role. Fix these before the first meeting, not after.

The gap between asset value and earnings value is your negotiation room. A shop with strong earnings but old machines sells on cash flow. A shop with new machines but thin margins sells on the asset base. Know which one you have.

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  Asset valueResale price of every machine, plus tooling and metrology gear.
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  Earnings value3x to 5x adjusted EBITDA for shops under 10 million USD revenue.
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  Market valueWhat similar shops in your region closed at in the last 18 months.

Due diligence kills more deals than price does. A buyer who finds messy books in week two will either walk or cut the offer by 20%. Prepare the file before you go to market. Three years of financial statements, tax returns, and bank statements is the minimum. Five years is better if you have them.

Separate personal expenses from business expenses. Owner vehicles, travel, and home office costs that run through the shop account need to be identified and explained line by line. Buyers accept add-backs when they are documented. They reject them when they are verbal.

Build a machine schedule. For each unit, list the model, year, spindle hours, controller, travels, and last service date. Include the maintenance log and any spindle or ball screw rebuilds. A machine with 40,000 spindle hours and a 2024 rebuild is worth more than one with 20,000 hours and no records.

Add a customer concentration sheet. If one customer is more than 25% of revenue, say so early. Buyers will find it. Showing it yourself reads as honesty instead of a hidden risk.

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  FinancialsThree to five years of statements, returns, and bank records.
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  Machine scheduleModel, year, spindle hours, controller, travels, last service date.
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  Customer mixRevenue by customer, with any account over 25% flagged.

Before any buyer walks the floor, audit your own equipment. Check spindle runout, axis backlash, and repeatability on the machines you plan to sell as running assets. If a 5-axis center holds ±0.005 mm on a test cut, document it with a report. If it does not, decide whether to repair or price it as-is.

Clean and organize the floor. Buyers read a messy shop as deferred maintenance. Chip conveyors, coolant systems, and way covers tell the story of how the machines were treated. A weekend of cleaning changes the first impression more than any slide deck.

Document your process capability. If you hold ±0.005 mm on production parts and finish to Ra 0.8-1.6 μm, put the inspection reports in the data room. If you run aerospace or medical work, your ISO 9001, IATF 16949, or ISO 13485 certificates are part of the asset. Keep the audits current.

Check the support infrastructure. Power capacity, air supply, crane coverage, and floor loading matter to a buyer who plans to move equipment or add machines. A 4,000 mm travel machine needs the bay and the rigging plan to match.

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  Spindle and axis checkRunout, backlash, and repeatability test cuts on every running asset.
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  Floor conditionChip conveyors, coolant, way covers, and housekeeping.
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  Compliance fileCurrent ISO 9001, IATF 16949, or ISO 13485 audits.

Due diligence is where the price gets tested. Expect the buyer to verify machine hours, run test cuts, and re-check your financial add-backs. Give them a single point of contact and a response time you can hold. Slow answers read as hidden problems.

Keep the floor running during diligence. A shop that looks idle during a sale tells the buyer the customer base is fragile. Production schedules, on-time delivery, and inspection reports should stay normal through the process.

Prepare for the equipment appraisal. Most buyers bring in a third-party appraiser for the machine base. Your machine schedule and maintenance logs should match what the appraiser finds. Any mismatch costs you credibility and price.

Do not sign an exclusivity letter too early. A 30-day exclusive is normal. A 90-day exclusive with no deposit gives the buyer free options while you sit off the market.

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  Single contactOne person answers all diligence questions within 24 hours.
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  Keep production normalIdle machines during diligence invite a price cut.
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  Appraisal matchYour machine schedule must match the third-party appraisal.

The sale is not finished at closing. Customer relationships, programming knowledge, and supplier terms transfer over months, not days. A written transition plan with named contacts and dates reduces the buyer's risk and protects your final payment if an earn-out is involved.

Introduce key customers in person if you can. A buyer who inherits a warm relationship is less likely to lose the account. Share the quoting history and the process notes for the parts that matter most to revenue.

Support your team through the change. Machinists and programmers are the asset a buyer cannot replace quickly. A clear message about job security and reporting lines keeps the floor stable during the first 90 days.

Keep your records for the earn-out period. If part of your payment depends on future performance, you need clean reporting from day one. Set the reporting format before you sign, not after.

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  Written transition planNamed contacts, dates, and deliverables for the first 90 days.
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  Customer introductionsIn-person handover for accounts over 10% of revenue.
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  Team stabilityClear message on roles and reporting lines before close.