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Amazon FBA Profit Calculator

Calculate your net margins, ROI, and Amazon fees accurately.

Calculation Results

Total Amazon Fees: $0.00
Total Cost per Unit: $0.00
Net Profit: $0.00
Net Margin: 0.00%
ROI: 0.00%
*Calculation includes COG, Shipping, Referral Fees, FBA Fees, Storage, and Marketing.

How to Use the Amazon FBA Profit Calculator

Understanding your numbers is the difference between a successful Amazon business and one that loses money. This calculator helps you break down the complex fee structure of Amazon's "Fulfillment by Amazon" (FBA) program.

Key Inputs Explained:

  • Sale Price: The list price customers pay for your product on Amazon.com.
  • Cost of Goods (COG): The manufacturing or purchase cost per unit from your supplier.
  • Shipping to Amazon: Your freight forwarding costs divided by the number of units in the shipment.
  • Amazon Referral Fee: Typically 15% for most categories, this is Amazon's commission for the sale.
  • FBA Fulfillment Fee: The flat fee Amazon charges to pick, pack, and ship your item. This depends on weight and dimensions.
  • PPC Spend: Your estimated advertising cost per unit sold (Total PPC Spend / Total Units Sold).

Example Scenario:

Suppose you sell a kitchen gadget for $25.00. Your COG is $5.00 and it costs $1.00 to ship to Amazon. The referral fee is 15% ($3.75). The FBA fulfillment fee is $5.00, and you spend $2.00 on PPC per sale.

Calculation: $25.00 – $5.00 (COG) – $1.00 (Shipping) – $3.75 (Referral) – $5.00 (FBA) – $2.00 (PPC) = $8.25 Net Profit.
This results in a 33% Net Margin and a 165% ROI ($8.25 profit / $5.00 product cost).

Strategies to Improve FBA Margins

To increase your profitability on Amazon, consider optimizing these three areas:

  1. Packaging Optimization: Reducing the size or weight of your product packaging can move you into a lower FBA fulfillment tier, saving dollars on every sale.
  2. Bulk Shipping: Use sea freight instead of air freight to lower your "Shipping to Amazon" cost per unit.
  3. ACOS Management: Monitor your Advertising Cost of Sale (ACOS). If your PPC spend per unit is too high, it will erode all your organic profit.
function calculateFBAProfit() { // Get input values var salePrice = parseFloat(document.getElementById('salePrice').value); var costOfGoods = parseFloat(document.getElementById('costOfGoods').value); var shippingToAmazon = parseFloat(document.getElementById('shippingToAmazon').value) || 0; var referralFeeRate = parseFloat(document.getElementById('referralFeeRate').value) || 0; var fbaFulfillmentFee = parseFloat(document.getElementById('fbaFulfillmentFee').value) || 0; var storageFee = parseFloat(document.getElementById('storageFee').value) || 0; var marketingSpend = parseFloat(document.getElementById('marketingSpend').value) || 0; // Validation if (isNaN(salePrice) || isNaN(costOfGoods)) { alert("Please enter at least the Sale Price and Cost of Goods."); return; } // Calculations var referralFeeAmount = salePrice * (referralFeeRate / 100); var totalAmazonFees = referralFeeAmount + fbaFulfillmentFee + storageFee; var totalCosts = costOfGoods + shippingToAmazon + totalAmazonFees + marketingSpend; var netProfit = salePrice – totalCosts; var margin = (netProfit / salePrice) * 100; var roi = (netProfit / costOfGoods) * 100; // Format numbers to 2 decimal places var formattedProfit = netProfit.toFixed(2); var formattedFees = totalAmazonFees.toFixed(2); var formattedTotalCost = totalCosts.toFixed(2); var formattedMargin = margin.toFixed(2); var formattedRoi = roi.toFixed(2); // Update UI document.getElementById('netProfitDisplay').innerHTML = "$" + formattedProfit; document.getElementById('totalFeesDisplay').innerHTML = "$" + formattedFees; document.getElementById('totalCostDisplay').innerHTML = "$" + formattedTotalCost; document.getElementById('marginDisplay').innerHTML = formattedMargin + "%"; document.getElementById('roiDisplay').innerHTML = formattedRoi + "%"; // Color formatting for negative profit if (netProfit < 0) { document.getElementById('netProfitDisplay').style.color = "#d9534f"; } else { document.getElementById('netProfitDisplay').style.color = "#1d8b02"; } }

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