| Scenario | Units | Revenue | Total Costs | Profit / Loss |
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Break-even analysis is the cornerstone of profitable selling. It tells you the minimum number of units you must sell each month before you start earning a single dollar of profit. Every unit sold below that number means you are losing money; every unit above is profit in your pocket.
For marketplace sellers on Etsy, eBay, and Amazon, break-even analysis is especially important because marketplace fees, subscriptions, and variable costs can eat into your margins quickly. This calculator factors in all of those costs automatically.
Start by selecting a marketplace preset (Etsy, eBay, Amazon) to auto-fill typical fee rates and subscription costs. Then enter your actual fixed costs (monthly subscriptions, tools, equipment), variable costs per unit (materials, packaging, shipping, labor), and your selling price. The calculator instantly shows your break-even point and a what-if scenarios table showing profit or loss at different sales volumes.
Use the custom fixed cost rows to add any additional monthly expenses unique to your business. The what-if table helps you plan inventory and set realistic sales targets.
Reduce variable costs: Negotiate bulk pricing for materials, find cheaper shipping carriers, or streamline packaging. Increase your selling price: Even small price increases can dramatically lower your break-even point. Reduce fixed costs: Evaluate which subscriptions and tools you actually need. Choose the right marketplace: Compare fees across platforms using our Marketplace Fee Comparison tool, or check individual calculators for Etsy, eBay, and Amazon.
Learn more about selling online with our free guides: