Shipping Profitability Calculator
Compute the net profit on a sold item after subtracting product cost, shipping, marketplace fees (as a percent of selling price), and packaging. Useful for e-commerce sellers on Amazon, Etsy, eBay, or Shopify checking whether a listing actually makes money after all variable costs.
Last updated: May 2026
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About this calculator
Net profit per sale on a marketplace shipment is: Net Profit = sellingPrice − productCost − shippingCost − (sellingPrice × marketplaceFee/100) − packagingCost. Variables: sellingPrice is the listed price the buyer pays (typically before sales tax, which is the platform's pass-through); productCost is your landed cost of goods (factory invoice + inbound freight + duty — see the international duty calculator); shippingCost is the carrier charge to deliver to the customer; marketplaceFee is the platform's percentage take on the selling price; packagingCost is the per-unit packaging material and labor. Critical insight: marketplace fees are calculated on selling price, not on profit, which means each $1 of price increase yields only (1 − fee/100) of additional gross profit. Major platform fees as of 2025–2026: Amazon referral fee 8–15% depending on category (average 15%), Etsy transaction fee 6.5% + listing fee $0.20 + payment processing 3%, eBay final value fee 12.9% + payment processing, Shopify (own store) 2.4–2.9% payment processing but no marketplace fee. Edge cases: this formula gives gross profit per unit sale, not including overhead allocations (rent, salaries, advertising, software subscriptions). Returns add another major cost driver — if 5% of orders are returned with full refund and unreclaimable shipping, effective margin drops 10–20% versus the formula. Advertising cost-of-sales (TACoS or ACoS on Amazon Ads, Etsy Ads, Google Shopping) is not included here; for paid-acquisition channels, deduct ad spend per unit. Sales tax is generally collected by the platform and remitted directly (marketplace facilitator laws), so it does not enter the profit calculation. Multi-channel sellers should run this calculation per channel because fees vary substantially.
How to use
Example 1 — Amazon FBA listing. Selling price $39.99; product cost (landed) $9.50; shipping (FBA pick-pack-ship + storage allocated per unit) $5.20; Amazon referral fee 15%; packaging $0.80. Step 1: marketplace fee = 39.99 × 15/100 = $6.00. Step 2: sum costs = 9.50 + 5.20 + 6.00 + 0.80 = $21.50. Step 3: net profit = 39.99 − 21.50 = $18.49. Step 4: margin = 18.49 / 39.99 = 46.2%. Verify: net profit + costs = 18.49 + 21.50 = 39.99 ✓. Example 2 — Etsy handmade item. Selling price $24.00; product cost $6.00; shipping $4.50; Etsy fees (6.5% transaction + 3% payment processing = effectively 9.5%); packaging $1.20. Step 1: marketplace fee = 24 × 9.5/100 = $2.28. Step 2: sum costs = 6.00 + 4.50 + 2.28 + 1.20 = $13.98. Step 3: net profit = 24.00 − 13.98 = $10.02. Step 4: margin = 10.02 / 24.00 = 41.8%. Compare against the Amazon listing: Etsy gives 41.8% margin vs. Amazon's 46.2% — the platform with the higher percent margin isn't always the higher absolute profit-per-unit; in this case Amazon yields $18.49 per sale while Etsy yields $10.02. Channel choice depends on traffic, brand fit, and customer acquisition cost beyond just per-unit margin.
Frequently asked questions
What marketplace fees do major e-commerce platforms charge in 2025–2026?
Amazon referral fees range from 8% (consumer electronics) to 17% (jewelry, watches), with most categories at 15%; FBA fulfillment adds $3–$8 per unit depending on size/weight; FBA storage runs $0.69–$2.40 per cubic foot per month. Etsy charges 6.5% transaction fee + $0.20 listing fee + 3% payment processing (effectively ~9.7% blended) plus optional Etsy Ads. eBay charges 12.9% final value fee for most categories + $0.30 per order + payment processing (effectively ~14% blended). Walmart Marketplace charges 6–15% referral by category, mid-teens average. Shopify (own store) charges 2.4–2.9% credit card processing only (no marketplace fee), but you pay $29–$299/month subscription. TikTok Shop charges 5% commission. Facebook Marketplace charges 5% selling fee per order. Always check the current rate card for your specific category — Amazon updates fees mid-year, and category-specific changes can be 1–3 percentage points either way.
How do I calculate the breakeven selling price given a target profit margin?
Solve the formula backwards: target margin = profit / sellingPrice = (sellingPrice − productCost − shipping − marketplaceFee × sellingPrice − packaging) / sellingPrice. Rearranging: sellingPrice × (1 − fee%) = profit + productCost + shipping + packaging, so sellingPrice = (productCost + shipping + packaging + target profit) / (1 − fee% − target margin%). Example: aim for 25% margin on a product costing $10 with $4 shipping, 15% Amazon fee, $1 packaging. Want $0.25 profit per $1 of price ⇒ sellingPrice = (10 + 4 + 1) / (1 − 0.15 − 0.25) = 15 / 0.60 = $25.00. Verify: at $25, fee = $3.75, total cost = 10 + 4 + 3.75 + 1 = $18.75, profit = $6.25, margin = 25% ✓. The denominator approach is more accurate than naive markup pricing (cost × 1/(1−margin)) which forgets the marketplace fee scales with selling price.
Why is profit margin not the only metric to optimize when listing products on marketplaces?
Profit per sale is one of several metrics that drive total business profitability. Velocity (sales per day) matters as much as per-unit margin: a $5 product with 100 sales/day at 30% margin ($150/day profit) beats a $50 product with 1 sale/day at 60% margin ($30/day profit). Customer acquisition cost via paid ads can consume the entire margin on cheap products, so high-margin products tolerate ad spend that low-margin products cannot. Return rate is a hidden margin destroyer: a 10% return rate on apparel often eliminates 15–30% of nominal profit because reverse shipping plus restocking labor costs more than the product margin. Inventory carrying costs (storage, capital, obsolescence) are significant on slow-moving high-margin SKUs. Working capital matters: a high-margin product that requires $50,000 of inventory turning twice a year is far less attractive than a moderate-margin product turning 12 times. The 'best' product per unit margin is rarely the best product per dollar of capital deployed.
What are common mistakes when calculating shipping profitability?
The most common mistake is forgetting that marketplace fees scale with selling price — adding $5 to your price doesn't add $5 to profit, it adds about $4.25 (after 15% fee). Another error is using list shipping rates instead of negotiated rates; high-volume sellers typically pay 30–60% below list, and using list rates dramatically understates true margin. Forgetting returns: a 5% return rate eliminates 5% of revenue gross, but the cost is much higher because returned items often can't be resold at full price (apparel often gets liquidated at 20–40% of original). Failing to allocate Amazon FBA storage, inbound shipping to FBA, removal fees, and long-term storage fees per unit underestimates Amazon-channel cost by $1–$3 per unit. Missing payment-processing fees on non-Amazon platforms ($0.30 + 2.9% Stripe/Square) understates fees by 3% of revenue. Not including ad spend per unit (TACoS or ACoS) for paid-acquisition products inflates apparent margin by 10–25%. Finally, ignoring sales tax remittance complexity for non-marketplace channels (Shopify, own website) — you owe sales tax in nexus states and the compliance cost is material above $50k/year in sales.
When should I NOT use this calculator?
Skip per-unit profitability for marketplace seller decisions on whether to enter a category — that needs aggregate analysis including expected ad spend, ramp curve, working capital deployment, and competitive landscape, not just per-unit margin. Do not use it for subscription products (book-of-the-month, beauty boxes, SaaS) where revenue model is recurring and customer lifetime value (LTV) and cost of acquisition (CAC) dominate per-shipment math. Avoid it for B2B wholesale where pricing is tier-discounted and freight terms (FOB, FCA, EXW) shift cost responsibility — those require dedicated landed-cost models. The formula does not handle bundled products (buy-one-get-one, multipacks) where the unit-economic structure is different per SKU in the bundle. For drop-shipping models with supplier-shipped goods, your cost structure differs (supplier-paid shipping, your platform fee, low fixed margin) — use a drop-shipping-specific model. Finally, for one-off custom orders, art commissions, or made-to-order goods, the marginal-cost framing here misses labor as the primary driver of cost; price those based on hours × hourly rate + materials + platform fee, not generic per-unit profit math.