Fixed Costs vs. Variable Costs: The Distinction That Changes How You Price Everything
Val (Valdas) Samonis · August 11, 2026 · 4 min read
Most beginners set prices by gut feel, by copying competitors, or by picking a number that "sounds right." None of those methods work for long — and they all share the same root cause: not knowing where your costs actually come from.
The fix starts with one foundational distinction: fixed costs versus variable costs. Get this right, and pricing stops being a guess. Get it wrong, and you can be busy, fully booked, and still losing money.
Let me walk you through exactly what these terms mean — using a simple, concrete US small-business example you can map onto your own situation.
What Are Fixed Costs?
Fixed costs are expenses you pay regardless of how much you sell. They don't move with your output. Whether you serve one customer this month or a hundred, these bills arrive the same.
For a small US-based business — let's say a freelance graphic designer operating as a sole proprietor — fixed costs might look like this:
- Adobe Creative Cloud subscription: $60/month
- Professional liability insurance: $75/month
- Website hosting and domain: $20/month
- Dedicated business phone line: $30/month
Total fixed costs: $185/month
That $185 is owed in January whether she lands five clients or zero. It doesn't care about her revenue. It just shows up.
This is exactly why fixed costs can feel like a trap when business is slow — and why you need to account for them before you ever quote a price.
What Are Variable Costs?
Variable costs are expenses that rise and fall with your output. The more you produce or sell, the more you spend. The less you do, the less you spend.
For the same designer, variable costs might include:
- Stock photo licenses purchased per project: $15/project
- Contract printer fees for client deliverables: $40/project
- Payment processing fees (e.g., Stripe at ~2.9% + $0.30 per transaction)
If she completes 8 projects this month, her stock photo and printer costs alone hit $440. If she completes 2 projects, those same costs drop to $110.
Variable costs scale with your work — which means they directly affect the floor of what you can charge per project.
Why the Distinction Changes Everything About Pricing
Here's where most beginners go wrong: they look at their total expenses as one lump sum, divide by their projected sales, and call it a price. That approach hides something dangerous.
Let's do it the right way.
Her monthly numbers:
- Fixed costs: $185/month
- Variable cost per project: $55 (stock photos + printing + payment processing on a $500 project)
- Target: 8 projects/month
Step 1 — Cover fixed costs first. $185 ÷ 8 projects = $23.13 per project just to cover the fixed overhead.
Step 2 — Add variable costs. $23.13 + $55.00 = $78.13 per project is her true break-even cost per project at this volume.
Step 3 — Price above that floor. If she charges $500 per project, her gross profit per project is $500 − $78.13 = $421.87. That's what's actually available for her own pay, taxes, savings, and growth.
Now here's the insight that changes everything: what happens if volume drops?
If she only lands 4 projects instead of 8, her fixed-cost share per project doubles — jumping from $23.13 to $46.25. Her break-even cost per project rises to $101.25, even though her price is the same. Lower volume doesn't just mean less revenue. It means every project is less profitable than you thought.
This is why knowing your fixed costs is a volume sensitivity tool, not just an accounting exercise.
The Practical Rule to Carry With You
Here's a simple rule worth memorizing:
Variable costs set your price floor per unit. Fixed costs determine how many units you need to sell before you're actually making money.
When you price a product or service, your variable cost tells you the absolute minimum you can charge for a single sale without losing money on that sale alone. Your fixed costs tell you how many of those sales you need just to keep the lights on.
Miss either number, and your pricing is built on sand.
Where to Go From Here
Once you can separate your costs into these two buckets, you unlock the next layer: break-even analysis, contribution margin, and ultimately, profit modeling — the tools that let you make decisions like "Should I take on a discount client?" or "What happens if I raise my price by 15%?" with numbers instead of nerves.
That's the work we do in depth inside the 21C School of Management — building the kind of analytical fluency that makes every business decision feel grounded rather than improvised.
But start here. Pull up your last three months of business expenses, open a simple spreadsheet, and put every line item into one of two columns: Fixed or Variable. That one exercise will show you things about your business that no amount of hustle ever could.