Buying or Selling a Machine Shop: The Complete Guide

Buying or selling a machine shop comes down to a spindle a lead can still run, a backlog that is a purchase order rather than a quote on the wall, and machines a buyer can insure and lien. What trades is transferable cash flow after a real lead wage, more than one customer who will take a new name, and travelers that match the invoices. A prototype job shop, a production cell, and a toolroom inside someone else's plant are different companies. Price a founder who still programs every job as if the floor already had a second shift and you will use the wrong multiple.

The short answer: a founder-run shop, where you still quote, program, and walk the floor, is usually an SDE file and often trades around 2x–3.5x Seller's Discretionary Earnings after a real lead wage. A shop with a lead already on the clock, a second customer, and machines that are not one tired mill can move toward 2.5x–4.5x SDE, and a managed floor can be read on adjusted EBITDA. Those ranges are directional. They are not a quote. A larger plant a sponsor might read as a platform or an add-on is a different file, covered in selling a manufacturing company to a PE platform versus an add-on.

This guide is for machine shops — CNC and manual shops that cut, turn, and finish parts for other people's products. It sits next to the fabrication shop guide and the light manufacturing guide, and on our manufacturing sale page. A fab shop welds and fits. A machine shop removes metal. A contractor with one mill in the corner is not this company unless that mill is the business.

Shops that sell well have travelers, a machine list with hours and liens, a lead who has already closed a job, and a customer file that is not one print. Shops that sell poorly are a programmer with a mill, a backlog that is a verbal "they always send us work," and a quality file that lives in your head.

This article is not legal, tax, export, or quality-system advice. ITAR, ISO, and what a print requires change by customer and by state. Confirm them with qualified counsel before you sign a letter of intent.

Start with a confidential business valuation.

Why a Machine Shop Is Different

A machine shop sells tolerance, capacity, and a delivery date. Several facts change the price:

• The machines are not the multiple. A new five-axis and a 1998 lathe both cut chips. Buyers appraise them, check the hours, and ask who can run them. Equipment liens come out of the proceeds. A photo of a clean aisle is not an appraisal.
• You may be the programmer. If every setup still waits for you, that is key-person risk. A transferable shop has a lead and programs someone else can open.
• The customer owns the print. Repeat work is real when the purchase order is in the file. A relationship that is only your cell phone is a pipeline. One OEM at a third of sales is concentration even when the parts are hard.
• Quality systems transfer or they do not. An ISO certificate, an approved-vendor listing, or an ITAR registration in your name can be the reason the customer stays. Read the change-of-control clause before you price it as an asset.
• Main Street versus a sponsored plant is whether a lead already runs the week. One programmer is SDE. A cell with a planner and a second customer can be read on adjusted EBITDA. Do not borrow a platform story for a three-machine shop.

Job shops quote and set up. Production shops run the same part. The gross margin and the buyer are different. Say which floor you have.

What Buyers Underwrite

Travelers and the backlog

Travelers and the backlog are the proof the work is real. Buyers want open jobs with the purchase order, the deposit or the progress bill, the material already bought, and who owns the scrap. A quote you have not won is not backlog. A job you have billed in full and not finished is a liability. The purchase agreement has to match that list.

The machine list

The machine list is make, year, hours if you have them, what it can hold, and the lien. A lender will not fund goodwill and then discover the mill is leased. Tooling that only fits one customer's fixture should be called out. It may not be worth much to the next print.

The people who can run it

The people who can run it are the wage, the certifications, and whether they intend to stay. A shop that loses the only person who can hold a tenth will not keep the customer who requires it. Put that name in the transition plan, not in a hope.

Material and outside processing

Material and outside processing change gross margin. Bar and plate bought for a job that died, and a heat-treat or coating bill you have been burying, both show up when a buyer ties invoices to travelers. If the travelers do not exist, the margin gets a haircut until they do.

What Is Actually Recurring

Machining is mostly purchase-order work. Buyers still separate a blanket order from a one-time prototype.

Repeat parts with a release schedule can support a loan when the customer will accept a new name. A year of "they keep calling" without a contract is not recurring revenue a buyer will fund. Prototype spikes, a single defense program, and a price you cut to fill a slow month should sit in their own column so they are not the run rate.

A second customer matters as much as the machine. If one print is the week, the letter of intent should say what happens to the price if that customer will not sign. A Michigan production cell and a Texas job shop can both sell. The wage and the industry differ. The test does not: a lead, a second customer, a machine log, and a backlog that is paper.

How Buyers Value a Machine Shop

Start with a real valuation. Appraise the machines on their own schedule.

Seller's discretionary earnings

Seller's discretionary earnings still clears most founder-run shops. Owner pay and true one-offs come back. A market wage for the programming and the quoting you still do does not. Last year's profit that assumed you are free labor is not the profit a buyer will debt-service.

Adjusted EBITDA

Adjusted EBITDA is for a floor that already runs with a lead on the payroll and already invoices more than one account. Machine condition, customer concentration, and whether a quality approval survives closing move the multiple. A three-person shop priced like a platform will be walked back. The manufacturing page talks about a different credit band for larger plants. Do not treat that band as a quote for a job shop.

The building, if you own it, is a separate price, with a rent a tenant would pay. SBA 504 can finance the real estate and long-lived equipment. It does not finance the goodwill of a programmer.

Who Buys, and How the Purchase Gets Financed

Machinists and shop owners buy a spindle so they can stop building a book from zero. They can run a part. They still need a wage that assumes they are not you, and a customer who will take their name.

OEMs and larger shops buy capacity they already send out. They underwrite whether your lead stays and whether the approval list transfers. They walk when the backlog is a conversation.

A sponsor shows up when the floor is managed and the book is not one print. That path is the platform-versus-add-on article, not a higher SDE multiple you announce yourself. Most machine shops are Main Street. Price them that way until the file says otherwise.

SBA 7(a) can fund a shop acquisition when a lead can produce the work and the equipment collateral is real. The 7(a) cap is $5 million. Lenders want the machine list, the liens, and a use of proceeds that does not assume you stay as the unpaid programmer. Read working with an SBA lender and the 2026 SBA financing guide.

Seller financing is common when you are still the programmer or one customer is a large share of the month. Earn-outs show up when the backlog is soft. An earn-out that only pays if you keep quoting is a job.

Diligence and the Year Before You List

Customers should not hear about a sale from a listing site, especially the one that can move the print. The same rules are in how to sell your company confidentially. Prepare with our due diligence guide and the 12–36 month roadmap.

Use the year. Put a lead on the payroll through a full quoting cycle. Write the programs down. List the machines with hours and liens. Split prototype from production. A slow-quarter discount treated as the margin, scrap you have not booked, and a customer approval that dies when your name comes off the vendor list quietly reprice the shop.

Personal guarantees on equipment notes come off only when the lender says they do. Call that lender before you accept a close date.

What a Buyer Will Ask on the First Call

They will ask who programs if you are sick, which jobs are released, which machine is one breakdown from stopping the week, and which customer can take the book with them. Bring travelers for the open jobs, the machine list, and the top ten accounts with a share of sales.

Read the first offer as a ceiling until the equipment schedule is real. If the mills are "to be confirmed," the number is not a price yet. Ask which jobs are included and which deposits stay with you. A buyer who wants the backlog and also wants the cash already collected is asking you to finance the work. The same letter should say who owns warranty on parts you already shipped. Put the answer in the letter of intent, not in a side email. Bring the machine hours so the appraisal is not the first time anyone sees them.

A coastal aerospace job shop and an inland agricultural-parts cell can both sell. The certification and the customer differ. The file is the same: a lead, a second account, a machine log, and paper backlog. Bring the last twelve months of scrap and outside-processing invoices with that file so the margin is not a surprise in week two.

Talk With Bridge Point

If you are preparing to sell a machine shop — or you are a buyer who can run the floor — Bridge Point Business Brokers can help you value the book and keep the process confidential. Start with a valuation or contact us at (352) 515-0226.