Calculate your net profit margins and ROI for Amazon FBA products.
Amazon Referral Fee:$0.00
Total Fees:$0.00
Profit Margin:0%
ROI:0%
Net Profit per Unit:$0.00
How to Calculate Amazon FBA Profit
Success on Amazon depends on understanding your "true" profit after all hidden costs. Many sellers focus only on the selling price and the cost of the product, but Amazon's ecosystem involves several recurring fees that can erode margins quickly.
Key Components of FBA Profitability:
Landed Cost: This is the total cost to get your product from the manufacturer to the Amazon warehouse, including unit price, inspections, and sea/air freight.
Referral Fee: Amazon charges a percentage of the total sales price. For most categories, this is 15%.
Fulfillment Fee (FBA Fee): The cost for Amazon to pick, pack, and ship your item. This varies based on weight and dimensions.
Storage Fees: Amazon charges monthly fees based on the volume (cubic feet) your inventory occupies in their warehouse.
Example Calculation
If you sell a yoga mat for $40.00:
Landed Cost: $12.00
Referral Fee (15%): $6.00
FBA Fee: $7.50
Storage & PPC: $2.50
Net Profit: $12.00
Profit Margin: 30%
Optimizing Your Margins
To increase your Amazon profit, focus on reducing your landed cost through bulk ordering or redesigning packaging to fit into a smaller FBA size tier. A small reduction in packaging dimensions can often move a product from "Large Standard" to "Small Standard," saving you dollars on every single sale.
function calculateFBAProfit() {
var price = parseFloat(document.getElementById('fba_price').value);
var cost = parseFloat(document.getElementById('fba_cost').value);
var referralPercent = parseFloat(document.getElementById('fba_referral').value);
var fbaFee = parseFloat(document.getElementById('fba_fee').value);
var storage = parseFloat(document.getElementById('fba_storage').value);
var ads = parseFloat(document.getElementById('fba_ads').value);
// Validate inputs
if (isNaN(price) || isNaN(cost)) {
alert("Please enter at least the Selling Price and Product Cost.");
return;
}
// Default 0 for optional fields
if (isNaN(referralPercent)) referralPercent = 0;
if (isNaN(fbaFee)) fbaFee = 0;
if (isNaN(storage)) storage = 0;
if (isNaN(ads)) ads = 0;
// Calculations
var referralAmt = price * (referralPercent / 100);
var totalFees = referralAmt + fbaFee + storage + ads;
var netProfit = price – cost – totalFees;
var margin = (netProfit / price) * 100;
var roi = (netProfit / cost) * 100;
// Display Results
document.getElementById('res_referral_amt').innerText = "$" + referralAmt.toFixed(2);
document.getElementById('res_total_fees').innerText = "$" + totalFees.toFixed(2);
document.getElementById('res_margin').innerText = margin.toFixed(2) + "%";
document.getElementById('res_roi').innerText = roi.toFixed(2) + "%";
document.getElementById('res_net_profit').innerText = "$" + netProfit.toFixed(2);
// Show the box
document.getElementById('fba_results_box').style.display = 'block';
// Change color if negative
if (netProfit < 0) {
document.getElementById('res_net_profit').style.color = '#d32f2f';
} else {
document.getElementById('res_net_profit').style.color = '#2e7d32';
}
}