Calculate your net profit, ROI, and margins for Amazon FBA products.
Total Revenue:$0.00
Amazon Fees (Referral + FBA):$0.00
Total Product Costs:$0.00
Net Profit:$0.00
Profit Margin:0%
Return on Investment (ROI):0%
How to Calculate Your Amazon FBA Profit
Success on Amazon depends on more than just high sales volume; it's about maintaining healthy margins. Our Amazon FBA Profit Calculator helps you peel back the layers of Amazon's complex fee structure to see exactly how much money lands in your pocket.
Key Variables in FBA Profitability
Sale Price: The final price the customer pays for your item.
COGS (Cost of Goods Sold): The total cost to manufacture or purchase the unit from your supplier.
Referral Fees: Amazon's "commission" for selling on their platform. For most categories, this is 15%.
FBA Fulfillment Fees: A flat fee per unit based on the weight and dimensions of the product, covering picking, packing, and shipping to the customer.
Inbound Shipping: The cost to ship your products from your warehouse or supplier to Amazon's fulfillment centers.
The Formula We Use
The calculator uses the standard accounting formula tailored for e-commerce:
While Net Profit tells you the dollar amount you keep, ROI (Return on Investment) tells you how hard your money is working. A 100% ROI means you doubled your money. Profit Margin helps you understand how much "buffer" you have if you need to lower your price to compete with other sellers.
function calculateFBAProfit() {
// Get Input Values
var salePrice = parseFloat(document.getElementById('salePrice').value) || 0;
var costProduct = parseFloat(document.getElementById('costProduct').value) || 0;
var shippingToAmazon = parseFloat(document.getElementById('shippingToAmazon').value) || 0;
var referralFeePct = parseFloat(document.getElementById('referralFee').value) || 0;
var fbaFee = parseFloat(document.getElementById('fbaFee').value) || 0;
var miscCosts = parseFloat(document.getElementById('miscCosts').value) || 0;
// Logic Calculations
var referralFeeAmount = salePrice * (referralFeePct / 100);
var totalAmazonFees = referralFeeAmount + fbaFee;
var totalProductExpenses = costProduct + shippingToAmazon + miscCosts;
var totalCosts = totalAmazonFees + totalProductExpenses;
var netProfit = salePrice – totalCosts;
var margin = 0;
if (salePrice > 0) {
margin = (netProfit / salePrice) * 100;
}
var roi = 0;
if (totalProductExpenses > 0) {
roi = (netProfit / (costProduct + shippingToAmazon)) * 100;
}
// Display Results
document.getElementById('resRevenue').innerText = '$' + salePrice.toFixed(2);
document.getElementById('resFees').innerText = '-$' + totalAmazonFees.toFixed(2);
document.getElementById('resTotalCosts').innerText = '$' + totalCosts.toFixed(2);
var profitElement = document.getElementById('resNetProfit');
profitElement.innerText = '$' + netProfit.toFixed(2);
if (netProfit >= 0) {
profitElement.className = 'result-value profit-positive';
} else {
profitElement.className = 'result-value profit-negative';
}
document.getElementById('resMargin').innerText = margin.toFixed(2) + '%';
document.getElementById('resROI').innerText = roi.toFixed(2) + '%';
// Show the results container
document.getElementById('fbaResults').style.display = 'block';
}