Why model revenue and cost changes together?
Because profit is the gap between them, and that gap is sensitive. A small revenue rise with costs held flat can lift profit a lot, which is the leverage this calculator reveals.
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Profit Impact Calculator
See how profit moves when revenue and costs each change by a percentage — the leverage effect on the bottom line.
new profit = revenue×(1+r%) − cost×(1+c%)
Frequently asked questions
What is operating leverage?
The effect where a modest change in revenue produces a larger percentage change in profit, because many costs do not move with sales. The profit-change percentage here hints at it.
Can profit go negative?
Yes. If costs rise faster than revenue, the new profit can drop below zero into a loss, and the calculator will show that plainly.
Is this gross or net profit?
It is a simple revenue-minus-cost profit. Whether that is gross or net depends on what you include in 'cost'; put in total costs for a bottom-line view.
How would a manager use this?
To pressure-test a plan: 'if we grow sales 10% but costs creep up 5%, what actually happens to the bottom line?' The answer is often more encouraging, or more alarming, than the raw percentages suggest.