E-Commerce

E-Commerce Profit Calculator

What Is This Calculator?

An e-commerce profit calculator reveals your true per-order profitability by subtracting every cost most sellers overlook: product cost, shipping, payment processing fees (2.9% + $0.30 per transaction on Stripe/PayPal), platform fees (15% on Amazon, 6.5%+30c on Etsy, 2% on Shopify Payments), return costs (reverse shipping + restocking + lost inventory), and customer acquisition cost. Many e-commerce businesses look profitable on a revenue basis but are actually losing money on every order once all costs are factored in. This is especially common in businesses with high return rates (apparel averages 20-30%), free shipping offers that absorb $6-$12 per order, and heavy reliance on paid advertising. The calculator strips away the vanity metrics and shows you the only number that matters: how many dollars of actual profit land in your account for each order you fulfill. Shopify's internal data shows that the average store has a 10% net margin after all costs, but the top quartile achieves 20%+ through tight cost control and premium pricing. The difference almost always comes down to understanding these per-order economics deeply rather than looking only at topline revenue. If your contribution margin is negative — meaning you lose money on every order before fixed costs — then scaling faster actually makes the problem worse. This calculator catches that scenario before it becomes a cash flow crisis.

How to Use This Calculator

Enter Your Average Order Value

Input All Product and Fulfillment Costs

Add Your Return Rate

Include Marketing Cost Per Order

Key Concepts

Customer Acquisition Cost (CAC)

Total marketing spend divided by new customers acquired. A healthy DTC e-commerce CAC is 20-30% of first-order AOV. If your CAC exceeds first-order profit, you must recoup costs through repeat purchases (LTV).

Contribution Margin

Revenue minus all variable costs (COGS, shipping, processing, returns, marketing). This is the profit each order contributes toward fixed costs like rent, software, and salaries. If contribution margin is negative, selling more units makes the problem worse.

LTV:CAC Ratio

Lifetime customer value divided by acquisition cost. E-commerce benchmark is 3:1 or higher. Below 2:1, the business model is unsustainable. Above 5:1, you are likely under-investing in growth.

Blended ROAS

Revenue divided by total ad spend across all channels. A 4x blended ROAS means $1 of ads generates $4 of revenue. After all costs, you typically need 3-4x ROAS minimum to be profitable in e-commerce.

Expert Insights

Calculate your "fully loaded" break-even AOV: the minimum order value at which you make $0 profit after every cost. If your average order is within 20% of this number, your margin of safety is dangerously thin. Raise prices, reduce COGS, or cut marketing costs.

Frequently Asked Questions

Net profit margins of 10-20% are considered healthy for DTC e-commerce. Below 10% leaves too little room for error. Above 20% is excellent and typically indicates strong brand pricing power, low return rates, or exceptional operational efficiency. Marketplaces like Amazon sellers typically run 5-15% due to higher platform fees.

Focus on owned channels (email, SMS, organic social) which have near-zero marginal cost. Optimize paid campaigns for ROAS not reach. Build a referral program. Invest in SEO for long-term organic traffic. The cheapest acquisition is repeat purchases from existing customers — email marketing ROI averages $36 per $1 spent.

Almost always yes, but build the cost into your product price. Free shipping increases conversion rates by 30-50% and average order values by 10-15% (via free-shipping thresholds). The key is ensuring your product pricing absorbs the shipping cost while maintaining healthy margins.

Total monthly marketing spend (all channels) divided by total monthly orders. Include: ad spend, influencer fees, affiliate commissions, email platform costs, and any agency fees. If you spent $10,000 on marketing and got 500 orders, your marketing cost per order is $20.

Stripe and PayPal charge 2.9% + $0.30 per transaction. Shopify Payments charges 2.4-2.9% + $0.30 depending on plan. Amazon takes a 15% referral fee. Etsy charges 6.5% + $0.25 transaction fee plus 3% + $0.25 payment processing. Always factor these into your per-order cost calculation.

Results are estimates for educational purposes only. Actual amounts may vary based on your specific financial situation, market conditions, and other factors. This calculator does not constitute financial advice.