Understanding your numbers is the difference between a successful e-commerce brand and a failing one. This Amazon FBA Profit Calculator helps you determine exactly how much money you take home after Amazon takes its cut.
Key Metrics Explained
Cost of Goods Sold (COGS): The total manufacturing cost per unit, including packaging.
Referral Fee: The commission Amazon charges for selling on their platform, typically 15% for most categories.
FBA Fulfillment Fee: The cost for Amazon to pick, pack, and ship your product to the customer. This varies based on size and weight.
Shipping to Amazon: The freight cost to get your products from your supplier or warehouse into Amazon's fulfillment centers.
Example Calculation
Imagine you sell a Yoga Mat for $40.00. Your manufacturing cost is $10.00, and shipping it to Amazon costs $2.00. Amazon's referral fee is 15% ($6.00), and the FBA fulfillment fee is $7.50. You also account for $0.50 in monthly storage fees.
1. Optimize Packaging: Moving from a "Large Standard" to a "Small Standard" size tier can save you dollars per unit in FBA fees.
2. Bulk Shipping: Lower your per-unit inbound shipping cost by sending larger shipments via LTL (Less Than Truckload) instead of SPD (Small Parcel Delivery).
3. Monitor Storage: High inventory levels can lead to aged inventory surcharges. Keep your inventory turn rate high to avoid unnecessary storage costs.
function calculateFBAProfit() {
var sellingPrice = parseFloat(document.getElementById('sellingPrice').value) || 0;
var costOfGoods = parseFloat(document.getElementById('costOfGoods').value) || 0;
var shippingToAmazon = parseFloat(document.getElementById('shippingToAmazon').value) || 0;
var referralFeePercent = parseFloat(document.getElementById('referralFeePercent').value) || 0;
var fbaFee = parseFloat(document.getElementById('fbaFee').value) || 0;
var miscCosts = parseFloat(document.getElementById('miscCosts').value) || 0;
// Logic for Amazon Referral Fee (Price * percentage)
var referralFeeAmount = sellingPrice * (referralFeePercent / 100);
// Total Amazon-specific fees
var totalAmazonFees = referralFeeAmount + fbaFee;
// Total lander cost and expenses
var totalExpenses = costOfGoods + shippingToAmazon + totalAmazonFees + miscCosts;
// Net Profit
var netProfit = sellingPrice – totalExpenses;
// Profit Margin
var profitMargin = (sellingPrice > 0) ? (netProfit / sellingPrice) * 100 : 0;
// ROI (Return on Investment – Profit / COGS)
var roi = (costOfGoods > 0) ? (netProfit / costOfGoods) * 100 : 0;
// Display Results
document.getElementById('totalFeesDisplay').innerText = '$' + totalAmazonFees.toFixed(2);
document.getElementById('totalExpensesDisplay').innerText = '$' + totalExpenses.toFixed(2);
document.getElementById('netProfitDisplay').innerText = '$' + netProfit.toFixed(2);
document.getElementById('marginDisplay').innerText = profitMargin.toFixed(2) + '%';
document.getElementById('roiDisplay').innerText = roi.toFixed(2) + '%';
// Show result container
document.getElementById('fba-results').style.display = 'block';
// Scroll slightly to results
document.getElementById('fba-results').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}