Dropshipping & E-Commerce Profit Calculator
Calculate net profit margins, ROI, and break-even selling prices for Amazon FBA, Shopee, TikTok Shop & Shopify stores.
Calculate net profit margin, ROI, and break-even selling price for Amazon FBA, Shopee, TikTok Shop, and Shopify stores.
1. Product & Expense Inputs
Net Profit Per Unit
$7.37
Margin: 14.74%
Break-Even Selling Price
$41.32
ROI: 17.28%
Expense Distribution Breakdown
How do I use Dropshipping & E-Commerce Profit Calculator?
Select a marketplace preset (Shopee, TikTok Shop, Amazon FBA, or All-in-One) and toggle between USD ($) and VND (₫) currency formatting.
Enter your retail Selling Price and landed Cost of Goods Sold (COGS), including factory manufacturing and inbound freight.
Set the combined Platform Commission Percentage covering marketplace referral fees, payment gateway processing, and affiliate commissions.
Input per-order Ad Spend Customer Acquisition Cost (CAC), outbound shipping/fulfillment fees, and import duty or VAT percentage to inspect Net Profit, Net Margin %, ROI %, and Break-Even Selling Price.
What features does Dropshipping & E-Commerce Profit Calculator offer?
One-click marketplace fee presets for Shopee, TikTok Shop, and Amazon FBA
Real-time Net Profit, Net Margin %, Return on Investment (ROI %), and Break-Even Price solver
Proportional expense progress bars across COGS, Ad Spend CAC, Platform Fees, Shipping, and Tax
Dual-currency precision formatting (2 decimals for USD, 0 decimals for VND)
1-Click CSV unit economics export for financial modeling in Excel or Google Sheets
100% Client-Side execution — product pricing and supplier cost data never leave your browser
What are the unit economics formulas and marketplace fee benchmarks?
Accurate e-commerce pricing requires separating fixed unit expenses (COGS, outbound shipping, packaging, and paid ad CAC) from variable revenue-based commissions (marketplace referral fees, payment gateway fees, and VAT/import duties).
Net Profit = Selling Price − (COGS + Shipping + Ad CAC + Other) − (Selling Price × Platform Fee %) − (COGS × Import Tax %)Deducts both fixed fulfillment/acquisition costs and percentage-based marketplace commissions from gross revenue.
Net Margin % = (Net Profit ÷ Selling Price) × 100 | ROI % = (Net Profit ÷ Total Cost) × 100Net Margin measures profit retained per dollar of revenue; ROI measures return generated per dollar of working capital spent.
Break-Even Price = (COGS + Import Tax + Shipping + Ad CAC + Other) ÷ (1 − Platform Fee %)Solves for the exact retail price where net profit equals zero after accounting for percentage commission deductions.
Break-Even ROAS = Selling Price ÷ (Selling Price − COGS − Platform Fee − Shipping − Tax)The minimum ad revenue multiplier required before a Facebook, TikTok, or Google PPC campaign loses money on unit sales.
| Marketplace | Referral / Commission Fee | Payment / Transaction Fee | Optional Program / Fulfillment Fee | Typical Total Take Rate |
|---|---|---|---|---|
| Amazon FBA (US) | 8% – 15% (Category dependent) | Included in referral fee | $3.22 – $7.50+ FBA Pick & Pack | 22% – 32% of GMV |
| TikTok Shop | 6% – 8% standard commission | Included in referral fee | 10% – 20% Creator Affiliate share | 16% – 28% with Affiliate |
| Shopee (VN / SEA) | 4% – 8% fixed category fee | 5.0% payment processing | 4% – 8% FreeShip Xtra / Voucher Xtra | 11% – 18% of order value |
| Shopify (DTC Store) | 0% platform commission | 2.4% – 2.9% + $0.30 (Stripe) | 3PL Pick & Pack ($2.50 – $5.00) | 3% – 8% before Ad CAC |
- Always include return and refund allowances (typically 3%–8% of gross revenue for apparel and electronics) inside the Other Cost field when stress-testing SKU profitability.
How is Dropshipping & E-Commerce Profit Calculator used in real-world workflows?
Evaluating FreeShip Xtra & Mega Campaign Discounts
Stacking Shopee Payment Fees (5%), Fixed Category Fees (4%–8%), and FreeShip/Voucher Xtra packages can quietly push total marketplace fees past 15%. Sellers model exact VND unit margins before locking in 9.9 or 11.11 flash-sale prices.
Setting Profitable Creator Commission & Spark Ads CPA Caps
Combine TikTok Shop's 6%–8% referral fee with a 10%–15% open affiliate commission to calculate how much margin remains for paid Spark Ads CPA before scaling creator seeding campaigns.
Pre-Sourcing Landed COGS & PPC ACOS Audits
Compare Alibaba FOB quotes plus ocean freight and customs duties against Amazon's 15% referral fee and FBA fulfillment tiers to verify a minimum 25% net margin prior to placing factory purchase orders.
Frequently Asked Questions about Dropshipping & E-Commerce Profit Calculator
How do I calculate break-even selling price when platform fees are a percentage of revenue?
Because marketplace referral fees (like Amazon's 15% or Shopee's 12.5%) scale with the final selling price, simply adding fixed costs together underestimates your break-even point. You must divide your total fixed unit costs (COGS + Import Duty + Shipping + Ad CAC + Packaging) by (1 − Platform Fee %). For example, $30 in fixed costs with a 15% fee requires a $30 ÷ 0.85 = $35.29 break-even selling price.
What is the difference between Net Profit Margin and Return on Investment (ROI)?
Net Profit Margin divides Net Profit by Selling Price, showing how many cents of every revenue dollar you keep after all expenses. ROI divides Net Profit by Total Capital Invested (COGS + Shipping + Ad Spend), measuring inventory capital efficiency. A product priced at $50 with $12.50 net profit has a 25% Net Margin, while its ROI on $25 of landed and marketing cost is 50%.
How should I combine affiliate commissions and marketplace fees in the calculator?
Both marketplace referral fees and creator affiliate commissions are deducted as a percentage of the gross selling price. Add them together in the Platform Fee (%) field—for instance, a 6% TikTok Shop referral fee plus a 10% creator affiliate commission equals a 16% combined platform fee.
Can I model VND prices for Shopee Vietnam and USD prices for cross-border stores?
Yes. Click the Currency toggle in the input header to switch between USD ($ with 2 decimal places) and VND (₫ with 0 decimal places). You can also click the Shopee Seller preset to pre-populate realistic VND pricing and fee tiers.
Is my store pricing or supplier COGS data sent to any server?
Never. Every calculation and CSV export runs 100% locally inside your browser JavaScript runtime. Your proprietary supplier quotes, ad CAC metrics, and profit margins remain completely private on your device.
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