Effective Strategies to Reduce Manufacturing Costs
Updated: Oct 23
Open last year's income statement and divide material cost by net sales. For a manufacturer that buys steel, resin, castings, or electronic parts and sells a finished product, that ratio is usually the largest single cost on the page, and it is the one most cost programs never go after directly. They go after labor with a hiring freeze, or after the floor with a lean event, and the material line moves only as far as the commodity market lets it.
When material is most of what you sell, start with what you buy. At one transportation equipment maker with about $250M in revenue, material cost came down from 84% to 71% of sales, and the work started with suppliers and freight, well before anyone touched the line. The first check needs one file your accounting system already holds: 12 months of purchases by supplier.
Where manufacturing cost actually sits
Cost of goods sold at a mid-size plant comes down to two things. There is what you pay suppliers for material and components, and there is what it costs to turn that material into product: labor, overhead, energy, maintenance, scrap.
Most of the advice you will find on how to reduce manufacturing costs is about the second part. Value stream maps, OEE, changeover time, preventive maintenance. Those are real tools and good plants use them. The trouble is proportion. When purchased material takes the biggest share of each sales dollar, a strong year on the floor moves a smaller number than a modest change in what you pay for that material. A cost list that gives procurement one bullet near the bottom is aimed at the smaller line.
The case client above shows the gap. Material was 84% of sales when the work began, and no amount of labor efficiency was going to close that on its own. Getting material to 71% of sales took supplier work, and because material sits inside cost of goods sold, the change went straight to gross margin.
If you have already worked through cost of goods sold line by line, Reduce COGS in Manufacturing goes deeper on the accounting side. The rest of this post stays with the purchase ledger.
Reduce manufacturing costs by starting with the spend you already have
You do not need new software or a sourcing project to begin. Ask accounting for every purchase in the last 12 months, with the supplier and the dollar amount on each line. Rank suppliers by spend and take the top 20.
The top 20 suppliers usually cover most of the dollars at a mid-size plant, which keeps the review small enough to finish. For each one, pull the contract or price agreement that actually governs what you pay. Then look for four leaks. None of them shows up as a variance in the monthly pack, because each one is already built into the standard cost that the variance is measured against.
A formal procurement audit does this work with more rigor, and How a Procurement Audit for Manufacturers Works from Start to Finish walks through each step. A first pass with the export and the files in purchasing will still tell you whether there is money on the table.
Contracts that renew on autopilot
Many supply agreements renew themselves unless someone sends notice inside a window that closes months before the end date. Nobody tracks the date. The window closes, and last year's price and minimum order quantities roll forward for another term. The supplier has no reason to raise the subject.
For each top-20 supplier, write down the renewal date and the notice deadline, then put the deadline on a calendar with a person's name next to it. Seeing a renewal coming gives you time to reprice before the old terms roll. The renewal clause is one of the terms covered in Master Supply Agreement: Three Terms That Hit the P&L, along with the index and delivery language that costs money later.
Minimum order quantities and shipping terms written for an old forecast are a close cousin of the same problem. Our seasonal post on manufacturing cost savings strategies shows how to catch them in vendor agreements before volume picks up.
Price increases with no index behind them
A supplier sends a letter citing higher costs and a new price starting next month. Purchasing accepts it because the part is needed and the letter sounds reasonable. Nobody asks which published index the increase follows, so when steel or resin comes back down, the price stays where it landed.
Go through every increase from the top 20 in the last 12 months. For each one, ask whether the contract ties price to a named index and whether that index moves both directions. An increase with no index behind it is a negotiation you have not had yet. If you want the clause language, our post on Commodity Price Volatility: Make the Drop Show Up on the Invoice shows how to write it so a drop at the mill reaches your invoice.
Duplicate suppliers for the same part
Now sort the same export by item or category instead of by supplier. Plants that grew through acquisition, or that let each site buy on its own, often pay two or more suppliers for the same bracket or the same corrugated box, at different prices and on different terms. Each relationship looks fine by itself. Side by side, you can see the higher price, and you can see the volume leverage you gave up by splitting the award.
Consolidating is not always the answer. A second source can be worth paying for on a part that would stop a line if one supplier failed. Make that a decision with the premium written down, and stop paying it by accident.
Freight nobody has bid in years
Inbound freight hides in two places. Some of it sits inside the part price when the supplier delivers. The rest runs through carrier accounts that someone set up years ago and nobody has rebid since. Rush and expedite charges then land on top of both, usually coded somewhere other than freight.
Pull freight as its own line, including the charges buried on supplier invoices, and find out when each lane or carrier was last bid. Check the freight terms in each top-20 contract while you are there. Many plants let suppliers arrange inbound freight years ago and never priced what that choice costs them.
Inventory is cost and cash
Excess stock sits on the balance sheet as an asset. On the P&L it shows up as carrying cost and write-downs for parts that never get used, and on the cash flow statement it is money parked on a shelf. Expedites are the other half of the same problem. A plant that runs short on the wrong parts pays premium freight and overtime to recover, while the racks are full of parts nobody needs this month.
Both problems tend to trace back to purchasing settings: minimums set too high, and lead times nobody has updated since the part was set up. Flambeau has reduced inventory by $11.5M at a client without slowing production. We Cut This Manufacturer's Inventory in Half Without Slowing Production shows how that kind of work runs.
Payment terms are the other cash lever that rarely gets used on purpose. The Cheapest Cash Flow Fix You're Not Using: Your Payment Terms covers how to reset them with suppliers who still want your business.
Shop-floor levers still matter
None of this replaces good operations. Lean work, preventive maintenance, scrap reduction at the source, energy use, and automation all lower conversion cost, and plenty of guides cover them in more depth than I will here. Plants that work both sides usually beat plants that pick one.
The two sides also feed each other. A supplier that ships out-of-spec material drives scrap on your line. A part with a long, unreliable lead time forces safety stock and expedites. When operations and purchasing look at the same supplier data, a fair amount of what looked like a floor problem turns out to start at the receiving dock.
Suppliers are a lever, not a line to squeeze
The cuts that look fastest on paper usually cost the most later. A blanket demand for price concessions, or a switch to the cheapest material that passes spec, can show savings in the first quarter. Then quality slips and lead times stretch, and the savings disappear into scrap and expedite variances that nobody ties back to the original decision.
Cutting headcount in purchasing does the same damage more slowly. Fewer people means fewer contracts reviewed and fewer increases challenged, and those are exactly the places the four leaks above come from. I would rather see a plant keep its buyers and point them at the top 20.
Suppliers give their best pricing to customers who bring volume they can plan around and pay when they said they would. A negotiation built on that has something to offer both sides, and it holds up longer than a squeeze. Why Traditional Cost-Cutting Fails in Manufacturing goes through the common failures in more detail.
Make the savings show up in the P&L
Procurement savings have a habit of vanishing before they reach the income statement. A buyer reports a lower price that finance never finds in margin, and by the next budget the claim is treated as noise. A few habits stop that.
- Agree the baseline with finance before any negotiation starts, using the last 12 months of price and volume by part.
- Count savings the way finance counts them. A lower price on parts you will buy next year is savings. An increase you refused is cost avoidance, which is worth tracking but belongs on a separate line.
- Tie each saving to the general ledger account and the month where it should land, so finance can find it.
- Review the list with the CFO every month, and drop anything that has not shown up.
How to Speak Like a CFO explains why savings disappear and how to report them in terms finance already uses.
What this looked like at one manufacturer
The client was a mid-size transportation equipment maker with about $250M in revenue. It cut and welded steel at one plant and assembled the finished product at others. Material cost was 84% of sales and the business was losing money. Steel and aluminum prices moved hard, and nothing protected the income statement from those swings.
The work began with suppliers, starting with competitive quotes on steel and aluminum. Reading invoices line by line turned up freight and rush charges nobody had agreed to, and hedging took the worst of the commodity swings off the table. Shipping was consolidated onto fewer carriers, and the company started taking the early payment discounts it had been leaving behind.
The results:
- Material cost fell from 84% to 71% of sales.
- Savings came to $1,000 per unit.
- Annualized savings reached $13M.
- On-time shipments rose from 8% to 75%.
I put as much weight on the last line as on the first three. Cheaper material that shows up late costs you somewhere else, and this plant got lower cost and better delivery at the same time. The full story is in How We Turned a Struggling Manufacturer from Red Ink to Record Profits, and more client results are on the case studies page.
When to bring in outside help
Plenty of $50M to $500M manufacturers have nobody at the executive level who owns procurement. Purchasing places orders and chases late shipments while finance closes the books, and the contracts in between belong to no one. If the 12-month export turns up more than your team can work through, or nobody in the building has the standing to reopen a contract with a large supplier, outside help makes sense.
Flambeau's Quick Wins Sprint runs the review above on your own data: the top suppliers, their contracts, the pricing behind each increase, and the freight. If the Quick Wins Sprint doesn't find documented savings larger than its fee within six months, you pay nothing for the Sprint.
The same approach works outside manufacturing. One service client now has $2.5M in procurement savings that recur every year.
Flambeau works on-site with manufacturers across the Midwest, with Madison, Milwaukee, the Fox River Valley, Rockford, and Chicagoland all within reach. More on that is at Manufacturing Procurement Consulting in Wisconsin and Northern Illinois, and the full list of engagements is on the services page. If you want a second set of eyes on your top 20 suppliers, book a free 30-minute call.
Common questions about reducing manufacturing costs
How can a mid-size manufacturer reduce manufacturing costs?
Start with what you buy. Pull 12 months of purchases, rank suppliers by dollars, and check the top 20 for contracts that renew on autopilot, price increases with no index behind them, duplicate suppliers for the same part, and freight nobody has bid in years. Those fixes usually pay before any new sourcing project does.
Why do traditional cost-cutting programs fall short in manufacturing?
Cutting headcount or squeezing suppliers looks fast on paper. The problems show up later as lower quality and longer lead times, so the savings end up costing more than they returned. Many avoidable costs sit in supplier contracts and outdated purchasing habits, and that is where to look first because fixing them leaves quality and delivery alone.
What does Flambeau Consulting guarantee?
Flambeau's guarantee applies to the Quick Wins Sprint. If the Quick Wins Sprint doesn't find documented savings larger than its fee within six months, you pay nothing for the Sprint. Mike Johnstone has more than $30M in documented savings and has taken one manufacturer's material costs from 84% to 71% of sales.