📊 E-commerce ROAS & Breakeven Calculator

A lightweight Node.js calculation engine for DTC, Shopify, and cross-border ecommerce merchants to compute breakeven ad spend, allowable CPA, and target ROAS.

⚡ Installation

npm install ecommerce-roas-calculator

🚀 Quick Usage

const { calculateRoas } = require('ecommerce-roas-calculator');

const result = calculateRoas({
  price: 50,           // Selling price ($)
  cogs: 15,            // Cost of Goods Sold ($)
  shipping: 5,         // Shipping & fulfillment ($)
  gatewayPct: 2.9,     // Stripe / PayPal fee (%)
  targetProfitPct: 20  // Desired net profit margin (%)
});

console.log(result);
// Output:
// {
//   price: 50,
//   totalCost: 21.75,
//   marginDollar: 28.25,
//   breakevenRoas: 1.77,
//   targetRoas: 2.74
// }

🔗 Official Interactive Tools & Guides

• 🧮 Interactive Web ROAS Calculator - Full browser-based calculator.
• 🏛️ US LLC Formation & Compliance Hub - Multi-state incorporation guides for DTC merchants.
• 💳 Stripe Payment Setup & Gateway Comparison - Lowering transaction fees and dispute rates.
• 🌐 KuajingBase Official Portal

⚖️ License

MIT License. Maintained by KuajingBase.