Calculate your net profit, ROI, and margins instantly.
Total Amazon Fees:$0.00
Net Profit:$0.00
Profit Margin:0%
Return on Investment (ROI):0%
How to Use the Amazon FBA Profit Calculator
Success on Amazon depends on understanding your "true" net profit. Many sellers look only at the sale price and the cost of the product, forgetting the complex layer of fees associated with Fulfillment by Amazon (FBA). Our calculator helps you break down every cent.
Key Metrics Explained
Cost of Goods (COGS): This is the total cost to manufacture or purchase one unit of your product, including shipping from the factory to your warehouse.
FBA Fulfillment Fee: This is the flat fee Amazon charges to pick, pack, and ship your item to the customer. It is based on the weight and dimensions of the product.
Referral Fee: Amazon's "commission" for selling on their platform. For most categories, this is 15% of the total sale price.
ROI (Return on Investment): This shows you how much profit you make relative to the money you spent on the product. An ROI of 100% means you doubled your money.
Example Calculation
Imagine you are selling a yoga mat for $40.00. Your costs are as follows:
Product Cost: $10.00
Shipping to Amazon: $1.00
FBA Fee: $7.50
Referral Fee (15% of $40): $6.00
In this scenario, your total expenses are $24.50 ($10 + $1 + $7.50 + $6). Your Net Profit is $15.50. Your Profit Margin is 38.75%, and your ROI is 155%.
Strategies to Improve Your FBA Margins
If your margins are slim (below 20%), consider the following strategies:
Reduce Product Weight: FBA fees are heavily dependent on weight tiers. Reducing packaging weight by even a few ounces can save dollars per unit.
Bulk Shipping: Lower your "Ship to Amazon" costs by sending larger shipments via LTL (Less Than Truckload) rather than small parcel delivery.
Optimize PPC Spend: High advertising costs are the #1 profit killer for FBA sellers. Monitor your ACoS (Advertising Cost of Sale) closely.
function calculateFBAProfit() {
var salePrice = parseFloat(document.getElementById("salePrice").value) || 0;
var itemCost = parseFloat(document.getElementById("itemCost").value) || 0;
var shippingToAmazon = parseFloat(document.getElementById("shippingToAmazon").value) || 0;
var fbaFees = parseFloat(document.getElementById("fbaFees").value) || 0;
var referralFeePercent = parseFloat(document.getElementById("referralFee").value) || 0;
var otherCosts = parseFloat(document.getElementById("otherCosts").value) || 0;
// Calculations
var calculatedReferralFee = (referralFeePercent / 100) * salePrice;
var totalAmazonFees = calculatedReferralFee + fbaFees;
var totalExpenses = itemCost + shippingToAmazon + totalAmazonFees + otherCosts;
var netProfit = salePrice – totalExpenses;
var profitMargin = 0;
if (salePrice > 0) {
profitMargin = (netProfit / salePrice) * 100;
}
var roi = 0;
var investment = itemCost + shippingToAmazon;
if (investment > 0) {
roi = (netProfit / investment) * 100;
}
// Display Results
document.getElementById("fbaResults").style.display = "block";
document.getElementById("resTotalFees").innerHTML = "$" + totalAmazonFees.toFixed(2);
var profitEl = document.getElementById("resNetProfit");
profitEl.innerHTML = "$" + netProfit.toFixed(2);
if (netProfit >= 0) {
profitEl.className = "fba-result-value fba-profit-positive";
} else {
profitEl.className = "fba-result-value fba-profit-negative";
}
document.getElementById("resMargin").innerHTML = profitMargin.toFixed(2) + "%";
document.getElementById("resROI").innerHTML = roi.toFixed(2) + "%";
}