Amazon FBA Fees Calculator
Estimate your potential Amazon FBA fees and profit margins with this calculator. Understanding these costs is crucial for pricing your products competitively and ensuring profitability.
Calculation Results:
Estimated Size Tier:
Estimated FBA Fulfillment Fee per Unit: $
Estimated Referral Fee per Unit: $
Estimated Monthly Storage Fee per Unit: $
Total Estimated FBA Fees per Unit: $
Estimated Net Profit per Unit: $
Total Estimated Monthly FBA Fees: $
Total Estimated Monthly Profit: $
function calculateFBAFees() {
var sellingPrice = parseFloat(document.getElementById("sellingPrice").value);
var productCost = parseFloat(document.getElementById("productCost").value);
var shippingToAmazon = parseFloat(document.getElementById("shippingToAmazon").value);
var productLength = parseFloat(document.getElementById("productLength").value);
var productWidth = parseFloat(document.getElementById("productWidth").value);
var productHeight = parseFloat(document.getElementById("productHeight").value);
var productWeight = parseFloat(document.getElementById("productWeight").value);
var referralFeePercentage = parseFloat(document.getElementById("referralFeePercentage").value);
var standardStorageRate = parseFloat(document.getElementById("standardStorageRate").value);
var oversizeStorageRate = parseFloat(document.getElementById("oversizeStorageRate").value);
var unitsSoldMonthly = parseInt(document.getElementById("unitsSoldMonthly").value);
var avgUnitsStored = parseInt(document.getElementById("avgUnitsStored").value);
var errorMessages = [];
if (isNaN(sellingPrice) || sellingPrice < 0) errorMessages.push("Please enter a valid Selling Price.");
if (isNaN(productCost) || productCost < 0) errorMessages.push("Please enter a valid Product Cost.");
if (isNaN(shippingToAmazon) || shippingToAmazon < 0) errorMessages.push("Please enter a valid Shipping Cost to Amazon.");
if (isNaN(productLength) || productLength <= 0) errorMessages.push("Please enter a valid Product Length.");
if (isNaN(productWidth) || productWidth <= 0) errorMessages.push("Please enter a valid Product Width.");
if (isNaN(productHeight) || productHeight <= 0) errorMessages.push("Please enter a valid Product Height.");
if (isNaN(productWeight) || productWeight <= 0) errorMessages.push("Please enter a valid Product Weight.");
if (isNaN(referralFeePercentage) || referralFeePercentage 100) errorMessages.push("Please enter a valid Referral Fee Percentage (0-100).");
if (isNaN(standardStorageRate) || standardStorageRate < 0) errorMessages.push("Please enter a valid Standard-Size Storage Rate.");
if (isNaN(oversizeStorageRate) || oversizeStorageRate < 0) errorMessages.push("Please enter a valid Oversize Storage Rate.");
if (isNaN(unitsSoldMonthly) || unitsSoldMonthly < 0) errorMessages.push("Please enter a valid number for Units Sold Per Month.");
if (isNaN(avgUnitsStored) || avgUnitsStored 0) {
document.getElementById("errorMessages").innerHTML = errorMessages.join("");
document.getElementById("sizeTierResult").textContent = "";
document.getElementById("fulfillmentFeeResult").textContent = "";
document.getElementById("referralFeeResult").textContent = "";
document.getElementById("monthlyStorageFeeUnitResult").textContent = "";
document.getElementById("totalFeesPerUnitResult").textContent = "";
document.getElementById("netProfitPerUnitResult").textContent = "";
document.getElementById("totalMonthlyFBAFeesResult").textContent = "";
document.getElementById("totalMonthlyProfitResult").textContent = "";
return;
} else {
document.getElementById("errorMessages").innerHTML = "";
}
var productGirth = (2 * productWidth) + (2 * productHeight);
var longestSide = Math.max(productLength, productWidth, productHeight);
var medianSide = [productLength, productWidth, productHeight].sort(function(a, b){return a-b;})[1];
var shortestSide = Math.min(productLength, productWidth, productHeight);
var dimensionalWeight = (productLength * productWidth * productHeight) / 139; // For standard size, 139 is the divisor. For oversize, it's 139.
var sizeTier = "";
var fbaFulfillmentFee = 0;
var isStandardSize = true;
// Determine Size Tier and Fulfillment Fee
if (longestSide <= 15 && medianSide <= 12 && shortestSide <= 0.75 && productWeight <= 0.8125) { // 13 oz = 0.8125 lbs
sizeTier = "Small Standard-Size";
if (productWeight <= 0.375) { // 6 oz
fbaFulfillmentFee = 3.22;
} else if (productWeight 12 oz to 13 oz
fbaFulfillmentFee = 3.58;
}
} else if (longestSide <= 18 && medianSide <= 14 && shortestSide <= 8 && productWeight <= 20) {
sizeTier = "Large Standard-Size";
if (productWeight <= 0.375) { // 6 oz
fbaFulfillmentFee = 3.86;
} else if (productWeight <= 0.75) { // 12 oz
fbaFulfillmentFee = 4.04;
} else if (productWeight <= 1) { // 1 lb
fbaFulfillmentFee = 4.22;
} else if (productWeight <= 2) { // 2 lbs
fbaFulfillmentFee = 4.75;
} else {
fbaFulfillmentFee = 4.75 + (Math.ceil(productWeight – 2) * 0.40);
}
} else {
isStandardSize = false;
var billableWeight = Math.max(productWeight, dimensionalWeight);
if (longestSide <= 60 && medianSide <= 30 && productGirth <= 130 && billableWeight <= 70) {
sizeTier = "Small Oversize";
if (billableWeight <= 2) {
fbaFulfillmentFee = 9.73;
} else {
fbaFulfillmentFee = 9.73 + (Math.ceil(billableWeight – 2) * 0.42);
}
} else if (longestSide <= 108 && medianSide <= 30 && productGirth <= 130 && billableWeight <= 150) {
sizeTier = "Medium Oversize";
if (billableWeight <= 2) {
fbaFulfillmentFee = 12.92;
} else {
fbaFulfillmentFee = 12.92 + (Math.ceil(billableWeight – 2) * 0.42);
}
} else if (longestSide <= 108 && productGirth <= 165 && billableWeight <= 150) {
sizeTier = "Large Oversize";
if (billableWeight <= 90) {
fbaFulfillmentFee = 89.99;
} else {
fbaFulfillmentFee = 89.99 + (Math.ceil(billableWeight – 90) * 0.83);
}
} else {
sizeTier = "Special Handling Oversize";
if (billableWeight <= 90) {
fbaFulfillmentFee = 158.49;
} else {
fbaFulfillmentFee = 158.49 + (Math.ceil(billableWeight – 90) * 0.83);
}
}
}
// Referral Fee
var referralFee = sellingPrice * (referralFeePercentage / 100);
// Monthly Storage Fee
var productVolumeCubicFeet = (productLength * productWidth * productHeight) / 1728;
var monthlyStorageFeePerUnit = 0;
if (isStandardSize) {
monthlyStorageFeePerUnit = productVolumeCubicFeet * standardStorageRate;
} else {
monthlyStorageFeePerUnit = productVolumeCubicFeet * oversizeStorageRate;
}
// Total Fees per Unit
var totalFeesPerUnit = fbaFulfillmentFee + referralFee + monthlyStorageFeePerUnit + shippingToAmazon;
// Net Profit per Unit
var netProfitPerUnit = sellingPrice – productCost – totalFeesPerUnit;
// Total Monthly FBA Fees (Fulfillment + Referral for sold units + Storage for stored units)
var totalMonthlyFBAFees = (fbaFulfillmentFee + referralFee) * unitsSoldMonthly + (monthlyStorageFeePerUnit * avgUnitsStored);
// Total Monthly Profit
var totalMonthlyProfit = netProfitPerUnit * unitsSoldMonthly;
document.getElementById("sizeTierResult").textContent = sizeTier;
document.getElementById("fulfillmentFeeResult").textContent = fbaFulfillmentFee.toFixed(2);
document.getElementById("referralFeeResult").textContent = referralFee.toFixed(2);
document.getElementById("monthlyStorageFeeUnitResult").textContent = monthlyStorageFeePerUnit.toFixed(2);
document.getElementById("totalFeesPerUnitResult").textContent = totalFeesPerUnit.toFixed(2);
document.getElementById("netProfitPerUnitResult").textContent = netProfitPerUnit.toFixed(2);
document.getElementById("totalMonthlyFBAFeesResult").textContent = totalMonthlyFBAFees.toFixed(2);
document.getElementById("totalMonthlyProfitResult").textContent = totalMonthlyProfit.toFixed(2);
}
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
padding: 25px;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
max-width: 800px;
margin: 30px auto;
border: 1px solid #e0e0e0;
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color: #2c3e50;
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margin-bottom: 20px;
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.calculator-form input[type="number"] {
padding: 10px 12px;
border: 1px solid #ccc;
border-radius: 5px;
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width: 100%;
box-sizing: border-box;
transition: border-color 0.3s ease;
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.calculator-form input[type="number"]:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
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background-color: #28a745;
color: white;
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transition: background-color 0.3s ease, transform 0.2s ease;
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.calculator-form button:hover {
background-color: #218838;
transform: translateY(-2px);
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.calculator-form button:active {
transform: translateY(0);
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background-color: #e9f7ef;
border: 1px solid #d4edda;
border-radius: 8px;
padding: 20px;
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color: #28a745;
margin-top: 0;
margin-bottom: 15px;
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padding: 5px 0;
border-bottom: 1px dashed #c3e6cb;
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.calculator-results p:last-child {
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#errorMessages {
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border: 1px solid #f5c6cb;
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border-radius: 5px;
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@media (max-width: 600px) {
.calculator-container {
padding: 15px;
margin: 20px auto;
}
.calculator-form button {
padding: 10px 15px;
font-size: 1em;
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.calculator-results p {
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.calculator-results p strong,
.calculator-results p span {
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text-align: left;
}
.calculator-results p span {
margin-top: 5px;
padding-left: 10px;
}
}
Understanding Amazon FBA Fees: A Comprehensive Guide
Selling on Amazon through their Fulfillment by Amazon (FBA) program can be a game-changer for e-commerce businesses, offering access to Amazon's vast customer base, Prime shipping, and world-class logistics. However, navigating the various FBA fees is crucial for maintaining healthy profit margins. This calculator helps you estimate these costs and understand your potential profitability.
What is Amazon FBA?
FBA is a service Amazon provides to sellers that handles storage, packaging, and shipping of products, as well as customer service and returns. When you use FBA, you send your products to Amazon's fulfillment centers, and they take care of the rest. This allows sellers to focus on sourcing, marketing, and growing their business without the overhead of managing a warehouse or shipping operations.
Key Amazon FBA Fee Components
Amazon's fee structure can seem complex, but it generally breaks down into a few main categories:
1. FBA Fulfillment Fee (Per Unit)
This is the core fee for Amazon picking, packing, and shipping your product to the customer. It's the most significant variable cost and depends heavily on your product's size and weight. Amazon categorizes products into "size tiers" (e.g., Small Standard-Size, Large Standard-Size, Small Oversize, Medium Oversize, Large Oversize, Special Handling Oversize). Each tier has a different base fee, and heavier items within a tier incur additional charges. The calculator uses your product's dimensions and weight to estimate this fee.
- Dimensions: Length, width, and height are used to determine the product's volume and size tier.
- Weight: The unit weight, or dimensional weight (whichever is greater for oversize items), impacts the final fulfillment fee.
2. Referral Fee (Per Unit)
This is Amazon's commission for selling your product on their platform. It's a percentage of the product's selling price and varies by product category. Most categories fall between 8% and 15%, but some can be as low as 5% or as high as 45%. The calculator allows you to input the specific referral fee percentage for your product's category.
- Selling Price: The price at which you sell your product on Amazon.
- Referral Fee Percentage: The category-specific percentage Amazon charges.
3. Monthly Storage Fee (Per Cubic Foot)
Amazon charges for the space your inventory occupies in their fulfillment centers. This fee is calculated per cubic foot and varies based on the time of year (higher during peak holiday season, October-December) and whether your product is standard-size or oversize. The calculator uses your product's volume and the specified storage rates to estimate this cost per unit.
- Product Volume: Calculated from your product's length, width, and height.
- Storage Rate: The monthly cost per cubic foot, which can differ for standard and oversize items.
- Average Units Stored Monthly: Your average inventory level in Amazon's warehouses.
4. Shipping Cost to Amazon (Per Unit)
While not an FBA fee directly, this is a critical cost for FBA sellers. It's the expense of shipping your inventory from your supplier or warehouse to Amazon's fulfillment centers. This cost should always be factored into your per-unit profitability. The calculator includes an input for this to give you a more accurate net profit.
How to Use the Calculator
To get an accurate estimate, input the following details:
- Selling Price per Unit: The price you plan to sell your item for on Amazon.
- Product Cost per Unit: What it costs you to acquire or manufacture one unit of your product.
- Shipping Cost to Amazon per Unit: Your estimated cost to send one unit to Amazon's warehouse.
- Product Dimensions (Length, Width, Height): In inches, for the packaged product.
- Product Weight: In pounds, for the packaged product.
- Referral Fee Percentage: Find this in Amazon Seller Central for your specific product category.
- Standard-Size Monthly Storage Rate per Cubic Foot: Use Amazon's current rates (e.g., $0.87 Jan-Sep, $2.40 Oct-Dec for standard). You can input an average or specific month's rate.
- Oversize Monthly Storage Rate per Cubic Foot: Use Amazon's current rates (e.g., $0.56 Jan-Sep, $1.40 Oct-Dec for oversize).
- Estimated Units Sold Per Month: Your projected monthly sales volume.
- Average Units Stored Monthly: Your average inventory level in Amazon's warehouses.
Example Calculation
Let's say you're selling a coffee mug:
- Selling Price: $25.00
- Product Cost: $8.00
- Shipping to Amazon: $0.50
- Dimensions: 5″ L x 4″ W x 4″ H
- Weight: 1.2 lbs
- Referral Fee: 15%
- Standard Storage Rate: $1.20/cubic foot (average)
- Oversize Storage Rate: $0.75/cubic foot (average)
- Units Sold Monthly: 100
- Average Units Stored: 50
Based on these inputs, the calculator would determine:
- Size Tier: Likely "Large Standard-Size"
- FBA Fulfillment Fee: Around $4.75 (for 1.2 lbs Large Standard)
- Referral Fee: $25.00 * 15% = $3.75
- Product Volume: (5*4*4)/1728 = 0.046 cubic feet
- Monthly Storage Fee per Unit: 0.046 * $1.20 = $0.055
- Total Fees per Unit: $4.75 (Fulfillment) + $3.75 (Referral) + $0.055 (Storage) + $0.50 (Shipping to Amazon) = $9.055
- Net Profit per Unit: $25.00 – $8.00 – $9.055 = $7.945
- Total Monthly FBA Fees: ($4.75 + $3.75) * 100 (sold) + ($0.055 * 50) (stored) = $850 + $2.75 = $852.75
- Total Monthly Profit: $7.945 * 100 = $794.50
This example demonstrates how each fee contributes to the overall cost and impacts your bottom line. Always remember that Amazon's fees can change, so it's good practice to regularly review their fee schedules and re-evaluate your product's profitability.