E-Commerce Profit Calculator
Calculate per-unit profit for e-commerce products after all costs and fees.
This e-commerce profit calculator breaks down the true per-unit economics of selling products online. It takes your selling price and subtracts four categories of costs: the product cost itself, shipping expenses, the platform fee calculated as a percentage of the selling price, and your advertising spend allocated per unit sold. The result is your actual profit per unit and your real profit margin.
Platform fees are often the most underestimated cost for e-commerce sellers. Amazon charges referral fees ranging from 8 to 45 percent depending on the category, with most categories falling between 12 and 15 percent. Etsy charges a 6.5 percent transaction fee plus listing fees. Shopify takes payment processing fees of around 2.9 percent. These percentages add up quickly and can consume a significant portion of your revenue.
Advertising costs are equally critical. Most e-commerce platforms require paid advertising to gain visibility. If your cost per acquisition exceeds your profit margin, every sale through ads generates a loss. Understanding your per-unit ad spend in the context of all other costs ensures you set profitable advertising budgets.
Use this calculator before launching a new product to verify profitability, or analyze existing products to identify which items in your catalog are truly contributing to your bottom line.
Calculator
Results
How to Use
- Enter the selling price of your product
- Enter the product cost including manufacturing or wholesale price
- Enter the shipping cost per unit you pay to deliver the product
- Enter the platform fee percentage charged by your marketplace or payment processor
- Enter your average advertising spend per unit sold
- Click Calculate to see total costs, per-unit profit, and profit margin
FAQ
What costs should I include in product cost?
Product cost should include the wholesale or manufacturing cost of the item, any import duties or tariffs, and packaging materials. If you make products yourself, include raw materials and direct labor per unit. Do not include fixed overhead costs like rent or equipment here, as those are separate from per-unit variable costs.
How do I calculate ad spend per unit?
Divide your total advertising spend by the number of units sold through those ads. For example, if you spend $500 on ads and sell 100 units, your ad spend per unit is $5. Track this metric closely because it directly impacts per-unit profitability and can vary significantly across products and advertising channels.
What is a good profit margin for e-commerce?
E-commerce profit margins typically range from 10 to 30 percent after all costs. High-margin products like digital goods or premium branded items can exceed 40 percent. Low-margin categories like electronics or commodity products may operate at 5 to 15 percent. A margin below 10 percent leaves little room for unexpected costs and makes the business fragile.
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