Estimate your net profit, margins, and ROI for FBA listings.
Total Amazon Fees:$0.00
Total Landed Cost:$0.00
Net Profit (Per Unit):$0.00
Profit Margin:0.00%
Return on Investment (ROI):0.00%
function calculateFBAProfit() {
var price = parseFloat(document.getElementById('fba_selling_price').value) || 0;
var cogs = parseFloat(document.getElementById('fba_product_cost').value) || 0;
var shipToAmz = parseFloat(document.getElementById('fba_shipping_to_amazon').value) || 0;
var refPercent = parseFloat(document.getElementById('fba_referral_fee').value) || 0;
var fbaFee = parseFloat(document.getElementById('fba_fulfillment_fee').value) || 0;
var storage = parseFloat(document.getElementById('fba_storage_fee').value) || 0;
var misc = parseFloat(document.getElementById('fba_misc_costs').value) || 0;
var referralFeeAmount = price * (refPercent / 100);
var totalAmzFees = referralFeeAmount + fbaFee + storage;
var totalLandedCost = cogs + shipToAmz + totalAmzFees + misc;
var netProfit = price – totalLandedCost;
var margin = price > 0 ? (netProfit / price) * 100 : 0;
var totalInvestment = cogs + shipToAmz;
var roi = totalInvestment > 0 ? (netProfit / totalInvestment) * 100 : 0;
document.getElementById('res_total_fees').innerHTML = '$' + totalAmzFees.toFixed(2);
document.getElementById('res_total_cost').innerHTML = '$' + totalLandedCost.toFixed(2);
var profitEl = document.getElementById('res_net_profit');
profitEl.innerHTML = '$' + netProfit.toFixed(2);
profitEl.className = netProfit >= 0 ? 'fba-result-value profit-positive' : 'fba-result-value profit-negative';
document.getElementById('res_margin').innerHTML = margin.toFixed(2) + '%';
document.getElementById('res_roi').innerHTML = roi.toFixed(2) + '%';
document.getElementById('fba_results_area').style.display = 'block';
}
How to Use the Amazon FBA Profit Calculator for Maximum ROI
For Amazon sellers, understanding the difference between revenue and actual profit is the key to a sustainable business. Fulfillment by Amazon (FBA) offers convenience, but it comes with a complex web of fees that can quickly erode your margins if not tracked carefully.
The Components of Amazon FBA Fees
To get an accurate profit calculation, you must account for every cost associated with getting your product from the manufacturer to the customer's doorstep.
Selling Price: The final price the customer pays on Amazon.
Cost of Goods Sold (COGS): The manufacturing or wholesale cost of your product.
Amazon Referral Fee: This is essentially Amazon's commission. For most categories, this is 15%, but it varies based on the product type.
FBA Fulfillment Fees: These are the costs for picking, packing, and shipping your orders. They depend heavily on the size and weight of your item.
Storage Fees: Amazon charges monthly fees to store your inventory in their warehouses, which increase during the Q4 holiday season.
Step-by-Step Example Calculation
Imagine you are selling a yoga mat for $40.00. Here is how the math works:
ROI: 116% (Calculated as Profit divided by Investment: $14 / $12)
Why ROI and Margin Matter
While Net Profit tells you how much cash you keep per sale, Profit Margin tells you how much "room" you have for price wars or advertising spend. Return on Investment (ROI) is arguably the most important metric for scaling; it shows you how hard your capital is working. High ROI products allow you to reinvest and grow your inventory faster.
Use this calculator before sourcing any new product to ensure the numbers make sense before you commit your capital.