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Amazon FBA Profit Calculator

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

Total Expenses $0.00
Net Profit $0.00
Profit Margin 0%
ROI 0%

How to Use the Amazon FBA Profit Calculator

Success on Amazon depends on understanding your "True North" numbers. This calculator helps you look past the gross revenue and see exactly what lands in your bank account after Jeff Bezos takes his cut. To get an accurate result, ensure you have your latest FBA fulfillment fee data from Seller Central.

Key Metrics Explained:

  • Referral Fee: The commission Amazon charges (usually 15%) for selling on their platform.
  • FBA Fulfillment Fee: The cost for Amazon to pick, pack, and ship your product. This varies by weight and dimension.
  • COGS (Cost of Goods Sold): What you paid the manufacturer per unit, including any packaging.
  • Profit Margin: The percentage of the selling price that is profit. A "healthy" FBA margin is typically 20-30%.
  • ROI (Return on Investment): How much profit you make relative to your product and shipping investment.

Example Calculation:

If you sell a product for $25.00, with a product cost of $5.00 and shipping cost of $1.50, and Amazon fees total $8.50, your net profit is $10.00. This results in a 40% profit margin and a 153.8% ROI.

function calculateFBAProfit() { var price = parseFloat(document.getElementById('fba_price').value) || 0; var cost = parseFloat(document.getElementById('fba_cost').value) || 0; var shipping = parseFloat(document.getElementById('fba_shipping').value) || 0; var referralPercent = parseFloat(document.getElementById('fba_referral_percent').value) || 0; var fulfillment = parseFloat(document.getElementById('fba_fulfillment').value) || 0; var misc = parseFloat(document.getElementById('fba_misc').value) || 0; // Calculation Logic var referralFee = price * (referralPercent / 100); var totalCosts = cost + shipping + referralFee + fulfillment + misc; var netProfit = price – totalCosts; var margin = (price > 0) ? (netProfit / price) * 100 : 0; var investment = cost + shipping; var roi = (investment > 0) ? (netProfit / investment) * 100 : 0; // Update Results document.getElementById('res_total_costs').innerText = '$' + totalCosts.toFixed(2); document.getElementById('res_net_profit').innerText = '$' + netProfit.toFixed(2); document.getElementById('res_margin').innerText = margin.toFixed(2) + '%'; document.getElementById('res_roi').innerText = roi.toFixed(2) + '%'; // Show Results Container document.getElementById('fba_results').style.display = 'block'; }

Why You Need an Amazon FBA Profit Calculator

Selling on Amazon FBA (Fulfillment by Amazon) is a powerful way to scale an e-commerce business, but the fee structure is notoriously complex. Many sellers focus on "top-line" revenue only to realize at the end of the month that their bank account hasn't grown. Our calculator is designed to provide clarity on your bottom-line profitability.

Understanding the Hidden Costs of FBA

While the Referral Fee and Fulfillment Fee are the most visible, successful sellers must account for several other variables:

  1. Inbound Placement Service Fees: Recent changes to Amazon's fee structure now include costs for how you distribute inventory to their warehouses.
  2. Storage Fees: These fluctuate based on the time of year (higher in Q4) and how long your items sit in the warehouse (Aged Inventory Surcharge).
  3. PPC and Advertising: Most products require Amazon Advertising to maintain rank. This cost must be calculated on a per-unit basis (Total Advertising Cost of Sale – TACoS).

Strategies to Improve Your Margins

If your results show a profit margin below 15%, consider these three strategies:

  • Optimize Packaging: Moving a product from "Large Standard" to "Small Standard" size tiers can save dollars per unit in fulfillment fees.
  • Sourcing Negotiations: Even a $0.50 reduction in manufacturing cost can significantly swing your ROI when selling thousands of units.
  • Price Elasticity Testing: Sometimes raising your price by $1-2 has a negligible impact on conversion rate but a massive impact on net profit.

Disclaimer: This calculator provides estimates based on user input. Amazon fees are subject to change and may vary based on product category and seasonal adjustments. Always verify your final numbers in Amazon Seller Central.

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