Manufacturing Profit Leaks: The Hidden Costs Eating Into Your Margins

Ask a manufacturer what they earn on a single product, then compare that answer to their financials. The two numbers often don’t match. That gap usually comes from manufacturing profit leaks, the smaller costs that build up while leadership stays focused on production and sales.

During a recent live episode, Kevin Golden, CPA, shared valuable insights on where margins slip away without anyone noticing. The discussion highlighted the importance of knowing your true costs, not just the obvious ones.

Why Margin Pressure Feels Constant

Kevin points to costs that keep climbing, with labor at the top of the list for most manufacturers. In the past, healthy margins could absorb an increase here or there. As labor and overhead rise and industries tighten down on pricing, that cushion disappears. Hitting margin targets becomes the difference between making money and losing it.

What Manufacturing Profit Leaks Look Like

Most manufacturers can tell you what they spend on raw materials. The trouble is everything else. As Kevin put it, “There’s a lot more than just raw materials in your product, right?”

He describes profit leaks as costs that “become larger than what you think because you probably just don’t think a whole lot about them.” They rarely show up overnight and instead build up gradually over time.

Scrap and Rework

Kevin recently worked with a manufacturer whose scrap had gotten out of hand. “All manufacturers have scrap, right? But the amount of scrap relative to how much they’re producing just didn’t make sense.”

Scrap wasn’t a new problem for that company. The volume had simply grown past the point where it made sense. Rework and inefficiencies fall into the same category, since each one chips away at margin a little at a time.

Overhead and Indirect Costs

Many pricing models account for raw materials and the person working the assembly line. According to Kevin, “What they don’t take into account is all the people who indirectly touch it or all the costs that indirectly touch that product, right?”

The result is a product that looks profitable on paper. Once overhead comes out, the margin is lower than expected and cash flow isn’t where it should be. Kevin also warns about “overhead costs that have silently grown” while leadership stays focused on making the product and hitting unit sales.

Labor Hidden Across Multiple Roles

Smaller manufacturers face a specific version of this problem. Kevin shared the example of a small manufacturer that wasn’t accounting for labor because the owner split time between making the product, selling, working with vendors and handling administrative work.

When roles blur, it’s easy to miss that a portion of someone’s time goes directly into production. That labor never makes it into pricing, and the margin suffers. In Kevin’s words, “I think I’m making X margin, but it’s really Y because of all these other costs that you’re not taking into account.”

How to Find and Fix the Leaks

Raising prices isn’t always the answer. Competitive pressure may not allow it. Kevin suggests starting with questions instead. If scrap is higher than it should be, ask why. “Maybe we’re throwing away a whole lot of material that we could repurpose, reuse.” Maybe the people on the line don’t realize how much their waste costs the business.

Asking those types of questions “could help you be more profitable, and maybe you didn’t increase your pricing at all.”

The second step is making sure your financials reflect your real costs. Kevin stresses “making sure your financials reflect that,” so you’re looking at real data rather than numbers built on incorrect assumptions. With accurate numbers in place, problems become visible. If “profit margin slipped by 5%,” you can ask why and trace it back, whether that’s a cost that grew as production volume increased or a leak no one was watching.

Know What Normal Looks Like

When asked for the one move manufacturers should make right now to protect margins, Kevin kept it simple: get in tune with your costs.

“Be in tune with what’s normal and where you want to be and what those costs really are, so you’ll know when they deviate, whether it’s for the good or for the bad.”

Kevin also shares how to track the cash conversion cycle, why inventory is “cash sitting on a shelf” and how better financial visibility helps manufacturers prepare for the what-ifs. Watch the full episode and subscribe to the James Moore manufacturing YouTube channel for more conversations with our manufacturing team.

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