Implied Interest Rate and Period Calculator

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Amazon FBA Profit Calculator

Results Summary

Total Amazon Fees: $0.00
Total Landed Cost: $0.00
Net Profit: $0.00
Profit Margin
0%
ROI
0%
function calculateFBAProfit() { var price = parseFloat(document.getElementById('sellingPrice').value) || 0; var cost = parseFloat(document.getElementById('productCost').value) || 0; var shipping = parseFloat(document.getElementById('shipToAmazon').value) || 0; var refPercent = parseFloat(document.getElementById('referralFeePercent').value) || 0; var fbaFee = parseFloat(document.getElementById('fbaFee').value) || 0; var storage = parseFloat(document.getElementById('storageFee').value) || 0; if (price <= 0) { alert("Please enter a valid selling price."); return; } var referralDollar = price * (refPercent / 100); var totalAmazonFees = referralDollar + fbaFee + storage; var totalLandedCost = cost + shipping + totalAmazonFees; var netProfit = price – totalLandedCost; var margin = (netProfit / price) * 100; var roi = (netProfit / (cost + shipping)) * 100; document.getElementById('resTotalFees').innerText = "$" + totalAmazonFees.toFixed(2); document.getElementById('resTotalCost').innerText = "$" + totalLandedCost.toFixed(2); document.getElementById('resNetProfit').innerText = "$" + netProfit.toFixed(2); document.getElementById('resMargin').innerText = margin.toFixed(2) + "%"; document.getElementById('resROI').innerText = roi.toFixed(2) + "%"; document.getElementById('results-area').style.display = 'block'; }

How to Use the Amazon FBA Profit Calculator

Success on Amazon depends on more than just high sales volume; it requires a deep understanding of your net margins. Our Amazon FBA Calculator helps you peel back the layers of marketplace fees to see exactly how much profit lands in your pocket after every sale.

Understanding FBA Fee Components

To get the most accurate results, you need to input specific data points:

  • Selling Price: The final amount the customer pays for your product.
  • Product Cost (COGS): Your total manufacturing or wholesale cost per unit.
  • Amazon Referral Fee: Typically 15% for most categories, this is the "commission" Amazon charges for selling on their platform.
  • FBA Fulfillment Fee: The cost for Amazon to pick, pack, and ship your item. This varies based on weight and dimensions.
  • Monthly Storage Fee: The cost to keep your inventory in Amazon's warehouses, which fluctuates based on the season (higher in Q4).

Example Calculation

Imagine you are selling a yoga mat for $35.00. Your manufacturing cost is $10.00 and it costs $1.50 to ship it to an Amazon warehouse. If the referral fee is 15% ($5.25), the FBA fulfillment fee is $6.00, and storage costs are roughly $0.25 per unit, your calculation would look like this:

$35.00 (Price) – $10.00 (Cost) – $1.50 (Ship) – $5.25 (Ref Fee) – $6.00 (FBA Fee) – $0.25 (Storage) = $12.00 Net Profit.
In this scenario, your Profit Margin is 34.28% and your ROI is 104%.

Why Margin and ROI Matter

While profit margin tells you how much of every dollar earned is profit, ROI (Return on Investment) tells you how efficiently your capital is working. A high ROI allows you to reinvest in inventory faster, scaling your Amazon business more aggressively. Most successful FBA sellers aim for a minimum of 100% ROI and 25% profit margin to account for PPC (advertising) costs and returns.

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