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Amazon FBA Profit Calculator

Calculate your net profit, margins, and ROI for Amazon FBA products.

Revenue & Core Costs
Amazon Fees & Logistics
Marketing & Ads
Net Profit $0.00
Profit Margin 0%
ROI 0%
Breakdown:
Total Amazon Fees: $0.00
Total Costs per Unit: $0.00

How to Use the Amazon FBA Profit Calculator

Calculating your margins before sourcing a product is the most critical step for any Amazon seller. This FBA calculator accounts for the complex fee structure of the Amazon marketplace to ensure you don't lose money on "hidden" costs.

Understanding the Key Metrics

  • Referral Fee: This is the commission Amazon takes for every item sold. For most categories, this is 15% of the total selling price.
  • FBA Fulfillment Fee: This covers picking, packing, and shipping your product to the customer. It is based on the weight and dimensions of your product.
  • COGS (Cost of Goods Sold): The total cost to manufacture or purchase one unit of your product.
  • PPC Spend per Unit: To find this, divide your total monthly ad spend by the total number of units sold. This helps you understand your true "Contribution Margin."

Example Profit Calculation

Suppose you sell a yoga mat for $35.00. Your manufacturing cost is $8.00 and it costs $1.50 to ship it to Amazon's warehouse. Amazon charges a 15% referral fee ($5.25) and a fulfillment fee of $6.00. If you spend $4.00 in advertising for every unit sold, your net profit would be:

$35.00 (Price) – $8.00 (COGS) – $1.50 (Shipping) – $5.25 (Referral) – $6.00 (FBA Fee) – $4.00 (PPC) = $10.25 Net Profit.

In this scenario, your Profit Margin is 29.3% and your ROI is 128.1%.

function calculateFBAProfit() { // Get values from inputs var price = parseFloat(document.getElementById('fba_price').value) || 0; var cogs = parseFloat(document.getElementById('fba_cogs').value) || 0; var referralPct = parseFloat(document.getElementById('fba_referral_pct').value) || 0; var fulfillment = parseFloat(document.getElementById('fba_fulfillment').value) || 0; var shipping = parseFloat(document.getElementById('fba_shipping').value) || 0; var storage = parseFloat(document.getElementById('fba_storage').value) || 0; var ads = parseFloat(document.getElementById('fba_ads').value) || 0; // Logic: Referral Fee is based on Selling Price var referralFeeAmount = price * (referralPct / 100); // Total Amazon Fees var totalAmazonFees = referralFeeAmount + fulfillment + storage; // Total Expenses var totalExpenses = cogs + shipping + totalAmazonFees + ads; // Net Profit var netProfit = price – totalExpenses; // Margin (Profit / Revenue) var margin = price > 0 ? (netProfit / price) * 100 : 0; // ROI (Profit / Cost of Goods + Shipping to Amazon) var investment = cogs + shipping; var roi = investment > 0 ? (netProfit / investment) * 100 : 0; // Display Results document.getElementById('fba_results').style.display = 'block'; document.getElementById('res_profit').innerText = '$' + netProfit.toFixed(2); document.getElementById('res_margin').innerText = margin.toFixed(1) + '%'; document.getElementById('res_roi').innerText = roi.toFixed(1) + '%'; document.getElementById('res_total_fees').innerText = '$' + totalAmazonFees.toFixed(2); document.getElementById('res_total_costs').innerText = '$' + totalExpenses.toFixed(2); // Color code profit if (netProfit < 0) { document.getElementById('res_profit').style.color = '#d32f2f'; } else { document.getElementById('res_profit').style.color = '#2e7d32'; } }

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