Calculate your net profit, margins, and ROI for Amazon FBA products.
Referral Fee Amount:
Total Expenses:
Net Profit:
Net Margin:
ROI (Return on Investment):
How to Use the Amazon FBA Profit Calculator
Selling on Amazon via Fulfillment by Amazon (FBA) involves various fees that can quickly eat into your margins. To build a sustainable e-commerce business, you must understand your numbers before sourcing products. This calculator helps you break down every cost associated with a single unit sale.
Understanding the Key Metrics
Selling Price: The final price the customer pays for your item on Amazon.com.
COGS (Cost of Goods Sold): The manufacturing or wholesale cost of your product.
Referral Fee: Amazon's "commission" for selling on their platform. For most categories, this is 15%.
FBA Fulfillment Fee: The cost Amazon charges to pick, pack, and ship your item to the customer. This depends on the size and weight of your product.
ROI (Return on Investment): This shows you how much profit you make relative to the money you spent to acquire and ship the product.
Example Calculation
If you sell a yoga mat for $40.00:
Product Cost: $10.00
Shipping to Amazon: $1.00
Referral Fee (15%): $6.00
FBA Fee: $7.50
Total Expenses: $24.50
Net Profit: $15.50
Margin: 38.75%
ROI: 140.9%
Strategies to Improve Your FBA Margins
To increase your profitability, consider these three levers:
Reduce Product Weight: FBA fees are heavily influenced by weight tiers. Even a few ounces can move you into a higher fee bracket.
Negotiate with Suppliers: As your volume increases, aim to lower your COGS to improve your ROI.
Optimize Packaging: Use the smallest possible packaging to avoid "Oversize" fees, which are significantly higher than "Standard" size fees.
function calculateFBAProfit() {
// Input collection
var salePrice = parseFloat(document.getElementById('fba_sale_price').value) || 0;
var productCost = parseFloat(document.getElementById('fba_product_cost').value) || 0;
var shippingToAmazon = parseFloat(document.getElementById('fba_shipping_to_amazon').value) || 0;
var fbaFee = parseFloat(document.getElementById('fba_fulfillment_fee').value) || 0;
var referralRate = parseFloat(document.getElementById('fba_referral_rate').value) || 0;
var otherCosts = parseFloat(document.getElementById('fba_other_costs').value) || 0;
if (salePrice 0 ? (netProfit / investment) * 100 : 0;
// Display results
document.getElementById('res_referral_fee').innerText = "$" + referralFeeAmount.toFixed(2);
document.getElementById('res_total_expenses').innerText = "$" + totalExpenses.toFixed(2);
var profitElement = document.getElementById('res_net_profit');
profitElement.innerText = "$" + netProfit.toFixed(2);
if (netProfit >= 0) {
profitElement.className = "result-value profit-positive";
} else {
profitElement.className = "result-value profit-negative";
}
document.getElementById('res_net_margin').innerText = netMargin.toFixed(2) + "%";
document.getElementById('res_roi').innerText = roi.toFixed(2) + "%";
// Show results area
document.getElementById('fba_results_area').style.display = 'block';
}