Calculating your margins accurately is the difference between a thriving e-commerce business and a failing one. This Amazon FBA Calculator helps sellers account for every hidden cost associated with the Fulfillment by Amazon program.
Key Components of FBA Fees
Referral Fees: This is Amazon's commission for selling on their platform. For most categories, this is 15% of the total selling price.
Fulfillment Fees: These are the costs for Amazon to pick, pack, and ship your product. These fees depend heavily on the weight and dimensions of your product.
COGS (Cost of Goods Sold): This includes the manufacturing cost per unit and any packaging provided by the supplier.
Shipping to Amazon: Often overlooked, this is the freight cost to get your items from the factory or your warehouse to an Amazon Fulfillment Center.
Example Calculation
If you sell a yoga mat for $40.00:
Product Cost: $10.00
Shipping to Amazon: $2.00
Referral Fee (15%): $6.00
Fulfillment Fee: $7.50
Storage Fees: $0.50
Your total costs are $26.00, leaving you with a Net Profit of $14.00, a 35% Profit Margin, and a 116% ROI (on your $12 product/shipping investment).
function calculateFBAProfit() {
var salePrice = parseFloat(document.getElementById('salePrice').value) || 0;
var unitCost = parseFloat(document.getElementById('unitCost').value) || 0;
var shippingCost = parseFloat(document.getElementById('shippingCost').value) || 0;
var referralRate = parseFloat(document.getElementById('referralFeePercent').value) || 0;
var fulfillmentFee = parseFloat(document.getElementById('fulfillmentFee').value) || 0;
var storageFee = parseFloat(document.getElementById('storageFee').value) || 0;
if (salePrice = 0) {
profitEl.className = "result-value profit-positive";
} else {
profitEl.className = "result-value profit-negative";
}
document.getElementById('resMargin').innerHTML = profitMargin.toFixed(2) + "%";
document.getElementById('resROI').innerHTML = isFinite(roi) ? roi.toFixed(2) + "%" : "0%";
document.getElementById('fbaResults').style.display = 'block';
}