Estimate your net profit, margins, and ROI for your Amazon FBA business.
Total Amazon Fees:$0.00
Total Unit Cost:$0.00
Net Profit:$0.00
Profit Margin:0.00%
ROI (Return on Investment):0.00%
How to Calculate Amazon FBA Profits
Selling on Amazon via Fulfillment by Amazon (FBA) is a lucrative venture, but the fee structure can be complex. To understand your true take-home pay, you must look beyond the selling price. This calculator accounts for the four primary pillars of FBA expenses:
Cost of Goods Sold (COGS): The manufacturing or wholesale price you pay for the product.
Amazon Referral Fee: The commission Amazon takes for bringing you the customer (typically 15% for most categories).
Fulfillment Fees: The cost for Amazon to pick, pack, and ship your item to the customer.
Operating Costs: This includes inbound shipping to Amazon warehouses, monthly storage, and advertising (PPC) spend.
Example Calculation
Suppose you sell a yoga mat for $40.00. Your procurement cost is $10.00 and it costs $2.00 to ship it to Amazon. If the referral fee is 15% ($6.00) and the FBA fulfillment fee is $7.00, your total expenses (before storage or ads) are $25.00. Your net profit would be $15.00 per unit, resulting in a 37.5% profit margin.
Strategies to Improve FBA Margins
If your margins are below 20%, consider these optimizations:
Reduce Packaging Size: FBA fees are heavily dependent on dimensions. Moving from "Large Standard" to "Small Standard" can save dollars per unit.
Optimize PPC: If your advertising cost per unit is too high, focus on long-tail keywords with lower competition.
Bulk Shipping: Use Amazon-partnered carriers to lower the inbound shipping cost per unit.
function calculateFBA() {
var sellPrice = parseFloat(document.getElementById('fba_sellPrice').value) || 0;
var costPrice = parseFloat(document.getElementById('fba_costPrice').value) || 0;
var shipToAmazon = parseFloat(document.getElementById('fba_shipToAmazon').value) || 0;
var referralRate = parseFloat(document.getElementById('fba_referralRate').value) || 0;
var fulfillmentFee = parseFloat(document.getElementById('fba_fulfillmentFee').value) || 0;
var storageFee = parseFloat(document.getElementById('fba_storageFee').value) || 0;
var ppcCost = parseFloat(document.getElementById('fba_ppcCost').value) || 0;
var otherCosts = parseFloat(document.getElementById('fba_otherCosts').value) || 0;
if (sellPrice 0 ? (netProfit / totalInvestment) * 100 : 0;
// Display
document.getElementById('res_totalFees').innerHTML = "$" + totalAmazonFees.toFixed(2);
document.getElementById('res_totalCost').innerHTML = "$" + totalUnitCost.toFixed(2);
var profitEl = document.getElementById('res_netProfit');
profitEl.innerHTML = "$" + netProfit.toFixed(2);
if (netProfit >= 0) {
profitEl.className = "result-value profit-positive";
} else {
profitEl.className = "result-value profit-negative";
}
document.getElementById('res_margin').innerHTML = margin.toFixed(2) + "%";
document.getElementById('res_roi').innerHTML = roi.toFixed(2) + "%";
document.getElementById('fba_resultArea').style.display = "block";
}