AVAILABLE FOR WEB, FLUTTER & QA PROJECTS
How to use this tool
1. Enter Total Monthly Fixed Costs
Sum salaries, office rent, software subscriptions, insurance, and administrative overhead.
2. Input Variable Cost Per Unit
Enter raw materials, manufacturing labor, packaging, and payment transaction fees incurred per unit sold.
3. Set Unit Selling Price
Specify the retail or contract price charged to the customer for each unit or service subscription.
4. Review Break-Even Threshold & Safety Margin
Inspect required unit volume, break-even sales revenue, and Margin of Safety against current volume.
Formula or logic used
Break-Even Point (BEP) & Contribution Margin
Break-even occurs when total revenues equal total expenses, meaning net operating income is exactly zero.
Contribution Margin per Unit: $\text{CM} = \text{Price per Unit} - \text{Variable Cost per Unit}$Contribution Margin Ratio: $\text{CMR} = \frac{\text{CM}}{\text{Price per Unit}}$Break-Even Units: $\text{BEP}_{\text{units}} = \frac{\text{Total Fixed Costs}}{\text{CM}}$Break-Even Revenue ($): $\text{BEP}_{\text{rev}} = \frac{\text{Total Fixed Costs}}{\text{CMR}}$Margin of Safety (\%): $\text{MOS} = (\frac{\text{Expected Units} - \text{BEP}_{\text{units}}}{\text{Expected Units}}) \times 100$
Examples
Example 1: Boutique Coffee Roaster & Cafe
Selling 86 cups per day achieves complete operational break-even.
Example 2: SaaS Software Subscription Business
Every subscriber past user #500 delivers $44 of pure pre-tax operating profit directly to the business.
Common use cases
New Venture Feasibility Analysis
Validate whether sales volume targets needed to survive are realistic before launching a startup.
Price Increase Impact Modeling
Determine how raising prices reduces the number of customer transactions required to cover company payroll.
Fixed Overhead Expansion Decisions
Calculate how many additional units must be sold to justify signing a new office lease or hiring staff.
Margin of Safety Evaluation
Assess how much sales can drop during economic downturns before the company begins operating at a loss.
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Frequently asked questions
What is the difference between Fixed and Variable costs?
Fixed costs remain constant regardless of production volume (e.g. rent, salaries, software tools, insurance). Variable costs increase directly with each additional unit sold (e.g. materials, packaging, sales commissions, Stripe fees).
What is Contribution Margin?
Contribution margin is the remaining revenue from each unit sold after subtracting its direct variable cost. It represents the money contributed toward paying down fixed overhead costs.
What does the Margin of Safety tell a business owner?
The margin of safety indicates by what percentage sales can decline before the business reaches its break-even point and begins losing money. A higher margin of safety means lower business risk.
How can a company lower its break-even point?
A business can lower its break-even point by reducing fixed overhead, cutting variable unit costs (negotiating cheaper supplier prices), or increasing the unit selling price.
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