Fixed and Variable Costs: Why Your Profit Is Vanishing
Is your business growing but your profit staying flat? Learn how to audit your cost structure to find your break-even point and keep more of what you earn.
Best quote from Fixed and Variable Costs: Why Your Profit Is Vanishing
Think of your fixed costs as your standing army; whether there’s a sale or not, you still have to pay the soldiers. Variable costs are the mercenaries—you only hire them when there’s a specific battle to fight.
This audio lesson was created by a BeFreed community member
The difference between fixed costs and variable costs
Frequently Asked Questions
The one-question test is a simple shortcut used to distinguish between fixed and variable costs. You simply ask: "If I sell exactly one more unit, does this cost increase?" If the answer is no—such as with rent or a flat monthly software subscription—it is a fixed cost. If the answer is yes—such as with raw materials, packaging, or transaction fees—it is a variable cost.
Step costs are expenses that stay fixed within a certain volume of activity but "step up" to a higher level once a specific threshold is crossed. For example, a business might be able to handle its current sales with one manager, but growing just a little further might require hiring a second manager or renting a second warehouse. This creates a staircase effect where your "fixed" floor suddenly jumps, which can cause profit to decrease even as revenue increases.
The contribution margin is the selling price of a product minus its variable cost per unit. It represents the amount of money from each sale that is left over to "contribute" toward paying off the business's fixed costs. This is a critical component of the break-even calculation; once you have sold enough units to cover your total fixed costs using this margin, every subsequent sale contributes directly to your take-home profit.
To reduce risk, a business owner should focus on their fixed costs, often referred to as the "standing army." Optimization strategies include negotiating better lease terms, auditing "vampire" software subscriptions, or outsourcing specific departments like IT or payroll. By converting fixed costs into variable ones (paying only for what is used), a business becomes more resilient because expenses will naturally evaporate or scale back if sales slow down.
This is due to "operating leverage" and economies of scale. Software companies typically have high upfront fixed costs to build an application, but the variable cost of selling to the millionth customer is almost zero. In contrast, a restaurant or service business has high variable costs—like food ingredients or labor hours—that grow right along with their revenue, keeping their profit margins tighter even as they scale.
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From Columbia University alumni built in San Francisco
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
