.fba-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 8px;
background-color: #f9f9f9;
color: #333;
}
.fba-calc-header {
text-align: center;
margin-bottom: 30px;
}
.fba-calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
.fba-input-group {
margin-bottom: 15px;
}
.fba-input-group label {
display: block;
font-weight: 600;
margin-bottom: 5px;
font-size: 14px;
}
.fba-input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.fba-calc-btn {
grid-column: span 2;
background-color: #232f3e;
color: white;
padding: 15px;
border: none;
border-radius: 4px;
font-size: 16px;
font-weight: bold;
cursor: pointer;
transition: background 0.3s;
}
.fba-calc-btn:hover {
background-color: #37475a;
}
.fba-results {
margin-top: 30px;
padding: 20px;
background-color: #fff;
border-radius: 8px;
border-left: 5px solid #ff9900;
display: none;
}
.fba-result-row {
display: flex;
justify-content: space-between;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
.fba-result-row:last-child {
border-bottom: none;
}
.fba-result-label {
font-weight: 600;
}
.fba-profit-pos {
color: #2e7d32;
font-weight: bold;
}
.fba-profit-neg {
color: #d32f2f;
font-weight: bold;
}
.fba-article {
margin-top: 40px;
line-height: 1.6;
}
@media (max-width: 600px) {
.fba-calc-grid {
grid-template-columns: 1fr;
}
.fba-calc-btn {
grid-column: span 1;
}
}
Item Selling Price ($)
Cost of Goods (Sourcing) ($)
Shipping to Amazon (per unit) ($)
Referral Fee % (Usually 15%)
FBA Fulfillment Fee (per unit) ($)
PPC / Marketing (per unit) ($)
Calculate Net Profit
Total Revenue:
$0.00
Total Amazon Fees:
$0.00
Total Costs:
$0.00
Net Profit:
$0.00
Net Margin:
0%
ROI:
0%
How to Calculate Amazon FBA Profitability
Selling on Amazon via Fulfillment by Amazon (FBA) involves various moving parts. To ensure your business is sustainable, you must understand the difference between your gross revenue and your take-home pay.
Key Components of FBA Math:
Sourcing Cost (COGS): The total amount paid to the manufacturer divided by the number of units, including inspection fees.Referral Fees: Amazon's "commission" for selling on their platform. For most categories, this is 15% of the total sales price.FBA Fulfillment Fees: This covers picking, packing, and shipping your product to the customer. It is determined by the size and weight of your item.Inbound Shipping: The cost of sending your inventory from your warehouse or prep center to Amazon's fulfillment centers.
Example Calculation:
Imagine you sell a Yoga Mat for $40.00 .
Product Sourcing: $10.00
Shipping to Amazon: $1.00
Referral Fee (15%): $6.00
FBA Fee: $7.50
PPC Advertising: $4.00
Total Expenses: $10 + $1 + $6 + $7.50 + $4 = $28.50
Net Profit: $40.00 – $28.50 = $11.50
Margin: 28.75% | ROI: 104.5%
function calculateFbaProfit() {
var salePrice = parseFloat(document.getElementById('fba_salePrice').value) || 0;
var itemCost = parseFloat(document.getElementById('fba_itemCost').value) || 0;
var shipToAmz = parseFloat(document.getElementById('fba_shippingToAmazon').value) || 0;
var referralRate = parseFloat(document.getElementById('fba_referralFee').value) || 0;
var fulfillmentFee = parseFloat(document.getElementById('fba_fulfillmentFee').value) || 0;
var ads = parseFloat(document.getElementById('fba_ads').value) || 0;
// Calculations
var referralFeeAmount = salePrice * (referralRate / 100);
var totalAmazonFees = referralFeeAmount + fulfillmentFee;
var totalCosts = itemCost + shipToAmz + ads + totalAmazonFees;
var netProfit = salePrice – totalCosts;
var margin = 0;
if (salePrice > 0) {
margin = (netProfit / salePrice) * 100;
}
var roi = 0;
var totalInvestment = itemCost + shipToAmz + ads;
if (totalInvestment > 0) {
roi = (netProfit / totalInvestment) * 100;
}
// Display results
document.getElementById('fba_results_area').style.display = 'block';
document.getElementById('res_revenue').innerHTML = '$' + salePrice.toFixed(2);
document.getElementById('res_fees').innerHTML = '$' + totalAmazonFees.toFixed(2);
document.getElementById('res_costs').innerHTML = '$' + totalCosts.toFixed(2);
var profitEl = document.getElementById('res_profit');
profitEl.innerHTML = '$' + netProfit.toFixed(2);
if (netProfit >= 0) {
profitEl.className = 'fba-profit-pos';
} else {
profitEl.className = 'fba-profit-neg';
}
document.getElementById('res_margin').innerHTML = margin.toFixed(2) + '%';
document.getElementById('res_roi').innerHTML = roi.toFixed(2) + '%';
}