Cost Structure Calculator
Step costs are the trap in capacity planning.
Fixed share of costs
38.2%
$10,400 of monthly profit
Step costs are the trap in capacity planning: profit rises smoothly to $160,000 and then drops by $12,000 when the next warehouse, system or hire is needed. Knowing where the steps are prevents growing into a loss.
How the Cost Structure Calculator works
Profit rises smoothly to a capacity threshold and then drops when the next warehouse, system or hire is needed. Knowing where the steps are prevents growing into a loss, which is otherwise a genuinely common outcome.
Also known as: fixed and variable cost breakdown · cost base calculator · where does my money go
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
What is a step cost?
A cost that is fixed within a capacity band and jumps when the band is exceeded: another warehouse, another shift, another manager. It behaves like a fixed cost until it does not.
Why do step costs matter?
Because profit falls at the step even though revenue rose. A business can grow past a threshold and be less profitable at the higher volume for a period.
How do I plan around them?
Identify where each step sits in revenue terms and either delay it, spread it, or plan the growth to land well past it rather than just over the line.
What is a healthy fixed cost share?
Lower is safer and less profitable at scale. A business with mostly variable costs survives downturns and gives up upside; the reverse is true for high fixed cost structures.