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Amazon FBA Profit Calculator

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

Total Fees
$0.00
Net Profit
$0.00
Profit Margin
0.00%
ROI
0.00%

Understanding Amazon FBA Profit Margins

Selling on Amazon via Fulfillment by Amazon (FBA) is a powerful way to scale an e-commerce business, but understanding the underlying costs is critical to your success. Many new sellers focus solely on the selling price and product cost, forgetting the complex web of Amazon-specific fees.

How This FBA Calculator Works

To calculate your true profit, we break down the transaction into four main pillars:

  • Cost of Goods Sold (COGS): This is what you pay the manufacturer per unit.
  • Amazon Referral Fees: Typically 15% for most categories, this is Amazon's commission for letting you sell on their marketplace.
  • Fulfillment Fees: This covers picking, packing, and shipping the item to the customer. It depends on the size and weight of your product.
  • Overhead & Marketing: Shipping your inventory to Amazon's warehouse and your PPC (Pay-Per-Click) advertising spend.

Example Profit Calculation

Imagine you are selling a Silicone Spatula Set:

Selling Price: $25.00
Product Cost: $5.00
Shipping to Amazon: $1.00
Referral Fee (15%): $3.75
Fulfillment Fee: $5.40
Marketing (PPC): $2.00
Total Cost: $17.15
Net Profit: $7.85
Margin: 31.4%

Tips for Improving Your FBA ROI

If your margins are slim (below 20%), consider these strategies:

  1. Optimize Packaging: Dropping just an inch in packaging size can shift your product into a lower FBA fee tier, saving you dollars per unit.
  2. Bulk Shipping: Use sea freight instead of air freight to lower your "Shipping to Warehouse" costs.
  3. Improve PPC Efficiency: Focus on high-converting keywords to lower your marketing cost per unit.
  4. Bundling: Sell 2-packs or 3-packs to increase the average order value while only paying the fulfillment fee once.
function calculateFBAProfit() { // Get values from inputs var price = parseFloat(document.getElementById('fba_selling_price').value) || 0; var cost = parseFloat(document.getElementById('fba_product_cost').value) || 0; var inboundShipping = parseFloat(document.getElementById('fba_shipping_to_amazon').value) || 0; var referralPercent = parseFloat(document.getElementById('fba_referral_percent').value) || 0; var fulfillment = parseFloat(document.getElementById('fba_fulfillment_fee').value) || 0; var storage = parseFloat(document.getElementById('fba_storage_fee').value) || 0; var marketing = parseFloat(document.getElementById('fba_marketing').value) || 0; // Logic: Calculate Amazon Referral Fee var referralFeeAmount = (referralPercent / 100) * price; // Logic: Calculate Total Amazon Fees var totalAmazonFees = referralFeeAmount + fulfillment + storage; // Logic: Calculate Total Costs var totalExpenses = cost + inboundShipping + totalAmazonFees + marketing; // Logic: Net Profit var netProfit = price – totalExpenses; // Logic: Margin and ROI var margin = (price > 0) ? (netProfit / price) * 100 : 0; var roi = (cost > 0) ? (netProfit / (cost + inboundShipping)) * 100 : 0; // Display Results document.getElementById('fba_results').style.display = 'block'; document.getElementById('res_total_fees').innerHTML = '$' + totalAmazonFees.toFixed(2); document.getElementById('res_net_profit').innerHTML = '$' + netProfit.toFixed(2); document.getElementById('res_margin').innerHTML = margin.toFixed(2) + '%'; document.getElementById('res_roi').innerHTML = roi.toFixed(2) + '%'; // Color coding for profit var profitElement = document.getElementById('res_net_profit'); if (netProfit > 0) { profitElement.style.color = '#008a00'; } else { profitElement.style.color = '#b12704'; } }

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