Fixed Costs vs. Variable Costs: What Every Manufacturer, Distributor and Ecomm Operator Needs to Know

Fixed costs vs. variable costs: Knowing how to maneuver these costs will make a difference to your bottom line.

Take a look at your P&L and you’ll notice your expenses tend to behave in one of two ways: some stay stubbornly consistent no matter what and others bounce around depending on how much you’re producing or selling. Those are your fixed costs vs. variable costs, and understanding the difference between them is one of the more practical things you can do for your business.

What Are Fixed Costs?

Fixed costs are expenses that stay relatively consistent regardless of production volume or sales activity. Whether you shipped 500 pallets last month or 5,000, these costs show up on your P&L in roughly the same amount.

For manufacturers, distributors and ecomm businesses, common fixed costs include:

• Warehouse or facility rent
• Insurance premiums
• Salaried employee wages
• Equipment lease payments
• Software subscriptions (your ERP, WMS, ecomm platform, etc.)
• Depreciation on machinery and vehicles
• Licensing and permit fees
• Fixed maintenance contracts

The upside of fixed costs is predictability. The downside is that you’re paying them whether business is booming or crawling.

What Are Variable Costs?

Variable costs move in step with your production or sales volume. Sell more, spend more. Pull back on output and these costs follow.

For businesses in manufacturing, wholesale distribution or ecomm, variable costs typically look like:

• Raw materials and components
• Packaging and labeling
• Freight and shipping costs
• Sales commissions
• Contract labor or temp staff
• Fulfillment costs tied to order volume
• Seasonal marketing spend

Variable costs give you flexibility, which matters a lot when your business has seasonal swings or unpredictable demand cycles.

Key Differences in Fixed Costs vs. Variable Costs

Fixed costs remain constant regardless of production levels, reduce on a per-unit basis as volume increases and directly affect your operating leverage. They can also limit flexibility during slow periods since the bills keep coming no matter what.

Variable costs scale with production and sales, offer more flexibility because you only incur them when you’re actively operating and can increase significantly during high-volume periods.

This distinction matters more than most operators realize. It shapes your pricing strategy, your cash flow forecasting and your ability to survive a slow quarter without bleeding out.

These differences in fixed costs vs variable costs are easy to grasp in the chart below:

Why This Matters More When You’re Running $5M to $50M in Revenue

At this revenue range, you’re well past the point where gut feel covers the gap. You’re managing real payroll, real inventory risk and real carrying costs. The cost structure you build now will either give you leverage on the way up or turn into an anchor when things slow down.

Here’s the concept worth understanding: operating leverage. Companies with a high proportion of fixed costs can generate outsized profit when revenue climbs, because those costs don’t scale with sales. But that same structure can be brutal if revenue drops.

Companies with more variable costs in their structure have lower upside during growth, but they also have more room to breathe during a downturn.

Neither model is inherently better. The right mix depends on your business, your margins and your risk tolerance.

2 Ways to Optimize Your Cost Structure

The most useful thing you can do is periodically review where your fixed costs could be converted to variable ones. Here are two approaches that work well for businesses like yours.

Swap Fixed Costs for Variable Costs

This is particularly relevant for businesses that have staffing levels set to handle peak demand. If your team is not consistently utilized, you’re burning cash on fixed labor costs that are not generating revenue.

Imagine having salaried staff sitting idle at a consistent rate. I’ve seen this before. We tracked that idle time as under-utilized employee salary in overhead, and the number was significant: $25,000 per month in salary costs with no corresponding revenue.

One bad month can happen. If it’s consistent, you’re not staffed properly. That’s money out the door.

The fix was straightforward. Right-size your permanent headcount to cover 50-75% of your expected workload and use contractors to flex up when demand spikes. You give up a bit of gross margin on those higher-revenue months, but when a slow month hits, you’re not stuck carrying a full fixed labor cost with nowhere to put it. In that example, the shift reduced annual labor costs by $300,000.

Use Overtime Strategically

Contractors are not always the right answer, especially in manufacturing environments where specialized knowledge and quality control matter. Another option is to hire staff below full capacity and use overtime to cover demand spikes.

Done right, this works well for both sides. Your team earns more during busy periods and you still pay less than you would for outsourced or contract labor. It also preserves the institutional knowledge that keeps your production line running smoothly.

Fixed and Variable Costs and Your Break-Even Point

Your break-even point ties directly back to this framework. The formula is simple:

Break-Even Sales Point = Fixed Costs / (Sales Price per Unit – Variable Costs per Unit)

The denominator is your contribution margin, what’s left from each sale after variable costs are covered. The higher your fixed costs, the more revenue you need before you’re operating in the black. Knowing this number gives you a realistic floor for your pricing and a clear target for your sales team.

Break-Even Point Calculator

Get your cost structure reviewed regularly

Managing fixed and variable costs well is a competitive advantage, not just a finance department exercise. For manufacturers, distributors and ecomm operators running at scale, the ability to flex your cost structure in response to market conditions is what separates businesses that grow profitably from those that just grow.

Review your cost structure regularly. Ask your controller which fixed costs could be converted to variable ones. Know your break-even. And if your financial team is not surfacing these insights on their own, that is worth paying attention to.