.fba-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
max-width: 900px;
margin: 20px auto;
padding: 30px;
border: 1px solid #e1e4e8;
border-radius: 12px;
background-color: #ffffff;
box-shadow: 0 4px 20px rgba(0,0,0,0.05);
color: #2d3748;
}
.fba-calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 30px;
}
@media (max-width: 768px) {
.fba-calc-grid { grid-template-columns: 1fr; }
}
.fba-input-group {
margin-bottom: 18px;
}
.fba-input-group label {
display: block;
font-weight: 600;
margin-bottom: 8px;
font-size: 14px;
color: #4a5568;
}
.fba-input-group input, .fba-input-group select {
width: 100%;
padding: 12px;
border: 1px solid #cbd5e0;
border-radius: 6px;
font-size: 16px;
box-sizing: border-box;
}
.fba-btn {
background-color: #ff9900;
color: #000;
border: none;
padding: 15px 30px;
font-size: 18px;
font-weight: 700;
border-radius: 6px;
cursor: pointer;
width: 100%;
transition: background 0.3s;
margin-top: 10px;
}
.fba-btn:hover {
background-color: #e68a00;
}
.fba-results {
background-color: #f7fafc;
padding: 25px;
border-radius: 8px;
border-left: 5px solid #ff9900;
}
.result-item {
display: flex;
justify-content: space-between;
margin-bottom: 12px;
padding-bottom: 8px;
border-bottom: 1px dashed #cbd5e0;
}
.result-item:last-child { border-bottom: none; }
.result-label { font-weight: 500; color: #4a5568; }
.result-value { font-weight: 700; color: #2d3748; }
.profit-positive { color: #2f855a; }
.profit-negative { color: #c53030; }
.fba-article {
margin-top: 40px;
line-height: 1.6;
color: #4a5568;
}
.fba-article h2 { color: #1a202c; border-bottom: 2px solid #ff9900; padding-bottom: 10px; margin-top: 30px; }
.fba-article h3 { color: #2d3748; margin-top: 25px; }
Amazon FBA Profit & Margin Calculator
Financial Breakdown
Referral Fee (Amazon Commission)
$0.00
Est. Fulfillment Fee (Pick & Pack)
$0.00
Total Amazon Fees
$0.00
Net Profit per Unit
$0.00
Net Margin
0%
Return on Investment (ROI)
0%
Understanding Amazon FBA Profitability
Selling on Amazon via Fulfillment by Amazon (FBA) is a powerful way to scale an e-commerce business, but success depends entirely on understanding your "true" margins. Many sellers only look at the sales price and the cost of the product, forgetting that Amazon takes a significant cut through various fees.
Key Components of the FBA Calculation
- Referral Fees: This is essentially Amazon's commission for selling on their platform. For most categories, this is 15% of the total sales price.
- Fulfillment Fees: These fees cover the cost of picking, packing, and shipping your products to customers. They are primarily determined by the weight and dimensions of your product.
- Cost of Goods Sold (COGS): This is what you pay your manufacturer or supplier for the product itself.
- Inbound Shipping: Often overlooked, this is the cost to ship your inventory from your warehouse or supplier into Amazon's fulfillment centers.
Example Calculation
If you sell a yoga mat for $40.00:
- COGS: $10.00
- Amazon Referral Fee (15%): $6.00
- FBA Fulfillment Fee (Large Standard): Approx. $6.50
- Shipping to Amazon: $1.50
- Total Expenses: $24.00
- Net Profit: $16.00 (40% Margin)
How to Improve Your FBA Margins
To maximize profit, sellers should focus on two main areas: reducing product weight/dimensions (to lower fulfillment fees) and optimizing the supply chain to lower COGS. Even a $0.50 reduction in packaging size can shift a product from one fee tier to a lower one, saving thousands of dollars over a year of sales.
function calculateFBA() {
// Get Inputs
var salesPrice = parseFloat(document.getElementById('salesPrice').value) || 0;
var unitCost = parseFloat(document.getElementById('unitCost').value) || 0;
var shippingCost = parseFloat(document.getElementById('shippingCost').value) || 0;
var weight = parseFloat(document.getElementById('productWeight').value) || 0;
var referralRate = parseFloat(document.getElementById('referralRate').value) || 0.15;
// 1. Calculate Referral Fee
var referralFee = salesPrice * referralRate;
// 2. Calculate FBA Fulfillment Fee (Simplified Tiers for 2024 Estimates)
// Under 1lb: ~$3.80 | 1-2lb: ~$5.40 | 2-3lb: ~$6.00 | Over 3lb: Base + per lb
var fulfillmentFee = 0;
if (weight <= 0.5) {
fulfillmentFee = 3.22;
} else if (weight <= 1) {
fulfillmentFee = 3.82;
} else if (weight <= 1.5) {
fulfillmentFee = 5.40;
} else if (weight <= 2) {
fulfillmentFee = 5.75;
} else if (weight 0) ? (netProfit / salesPrice) * 100 : 0;
var roi = (unitCost > 0) ? (netProfit / (unitCost + shippingCost)) * 100 : 0;
// Update Display
document.getElementById('resReferral').innerHTML = '$' + referralFee.toFixed(2);
document.getElementById('resFulfillment').innerHTML = '$' + fulfillmentFee.toFixed(2);
document.getElementById('resTotalFees').innerHTML = '$' + totalFees.toFixed(2);
var profitEl = document.getElementById('resNetProfit');
profitEl.innerHTML = '$' + netProfit.toFixed(2);
if (netProfit >= 0) {
profitEl.className = 'result-value profit-positive';
} else {
profitEl.className = 'result-value profit-negative';
}
document.getElementById('resMargin').innerHTML = margin.toFixed(2) + '%';
document.getElementById('resROI').innerHTML = roi.toFixed(2) + '%';
}
// Initial calculation
calculateFBA();