--- title: Ecommerce Profit Calculator โ€” Any Platform | AMZ Global Experts url: https://www.amzglobalexperts.com/tools/ecommerce-profit-calculator/ description: Calculate true ecommerce net profit after COGS, shipping, platform fees, ad spend, and returns. Works for Amazon, Shopify, or any marketplace โ€” free, no login. ---Profitability # Ecommerce Profit Calculator One platform-agnostic profit calculator that accounts for COGS, shipping, platform fees, ad spend, and returns โ€” built for sellers running Amazon, Shopify, or both. Profitability ## ๐Ÿ›’ E-commerce Profit Calculator Inputs Type a value or drag the slider Total Revenue $100 $1.00M Cost of Goods Sold $50 $800K Shipping & Fulfillment $0 $200K Platform Fee 0% 25% Ad Spend / Marketing $0 $200K Returns Rate 0% 30% Calculate E-com Profit Results ๐Ÿ›’ Enter values & calculate Adjust the sliders and click Calculate to see your results. Formula `Net Profit = Adj. Revenue โˆ’ COGS โˆ’ Shipping โˆ’ Platform Fees โˆ’ Ad Spend` Adjusted revenue accounts for returns first. Platform fees are then calculated on that adjusted figure. Every cost layer is subtracted to arrive at true take-home net profit. Example `Revenue $25K ยท COGS $8K ยท Shipping $3K ยท Fees 15% ยท Ads $2.5K ยท Returns 3% โ†’ Net Profit โ‰ˆ $7,275` FAQs What platform fee should I use? Amazon charges 8โ€“15% referral fee depending on category (plus FBA fees). Shopify charges 2.9% + $0.30 per transaction on the Basic plan. eBay charges 12.9% + $0.30. Start with 15% for Amazon; adjust down for Shopify or DTC. Why include returns in the calculation? What is a good e-commerce profit margin? Related calculators [ ๐Ÿ’ฐ Profit Margin Real profit per unit after all Amazon costs ](/tools#section-amazon) [ ๐Ÿ“ˆ ROAS Is your PPC spend generating real profit? ](/tools#section-amazon) [ โš–๏ธ BE-ROAS The minimum ROAS before you lose money ](/tools#section-amazon) The concept ## Why returns belong in a profit calculation Returns are often left out of quick margin math, but they reduce effective revenue and add restocking, inspection, and sometimes disposal costs on top. A 5% return rate can cut margin by 3โ€“5 percentage points on an already thin-margin product โ€” enough to flip a profitable SKU into a loss. ## One calculator, multiple platforms Platform fee is the one input that changes most between channels โ€” roughly 8โ€“15% for Amazon referral fees, 2.9%+$0.30 for Shopify's Basic plan, 12.9%+$0.30 for eBay. Everything else in the profit equation โ€” COGS, shipping, ad spend, returns โ€” behaves the same regardless of platform, which is why one model works across all of them. Common mistakes ## What sellers get wrong - โœ• Calculating margin before returns are factored in, overstating true profitability by several percentage points. - โœ• Using a generic platform fee percentage instead of the actual fee for the specific channel and category. - โœ• Excluding ad spend from the profit calculation entirely, which is common when marketing and finance track separately. Related reading & services [The Hidden Margin Crisis ](/blog/the-hidden-margin-crisis.html) [Amazon vs. TikTok Shop: The New Distribution Playbook ](/blog/amazon-vs-tiktok-shop-distribution-playbooks-modern-commerce.html) [Amazon TACoS Optimization ](/services/amazon-tacos-optimization/) ## Want this run against your real numbers? Robert reviews every submission personally โ€” ROAS, TACOS, margin structure and PPC efficiency mapped against your actual Amazon account. Delivered within 24 hours. [Book a Free Audit ](/book/) ## FAQ ### What platform fee should I use? Amazon charges 8โ€“15% referral fee depending on category (plus FBA fees). Shopify charges 2.9% + $0.30 per transaction on the Basic plan. eBay charges 12.9% + $0.30. Start with 15% for Amazon; adjust down for Shopify or DTC. ### Why include returns in the calculation? Returns reduce effective revenue and add hidden costs โ€” restocking, inspection, repackaging, and sometimes disposal. A 5% return rate can cut margin by 3โ€“5 percentage points on thin-margin products. ### What is a good e-commerce profit margin? Industry average net margin is 5โ€“15%. DTC brands with strong organic traffic target 20โ€“30%. Amazon private label operators in competitive categories typically see 15โ€“25% after all fees. Below 10% is fragile.