ROI (Return on Investment) measures how much profit you make relative to the money you put in. For Amazon FBA, your investment is your product cost plus shipping to Amazon. A 100% ROI means you double your money on each order cycle.
What Is a Good ROI for Amazon FBA?
A healthy FBA ROI is 50% to 100%+. At 50% ROI every $1,000 invested returns $500 profit. Below 30% ROI is risky because thin margins leave no buffer for fee increases, returns or price competition.
ROI vs Profit Margin — What Is the Difference?
Profit margin measures profit as a percentage of selling price. ROI measures profit as a percentage of your investment cost. Both matter — a product can have a healthy margin but low ROI if your COGS is very high relative to selling price.
How do I calculate ROI for Amazon FBA? +
FBA ROI equals Net Profit Per Unit divided by your Total Investment Per Unit multiplied by 100. Your investment includes product cost and shipping to Amazon. Net profit is your selling price minus all costs including Amazon fees.
What is the payback period for FBA inventory? +
The payback period is how many months it takes to sell all your inventory and recover your investment. It equals total units purchased divided by monthly units sold. A payback period under 2 months is excellent. Over 4 months ties up too much capital.
Should I include PPC costs in my ROI calculation? +
Yes — always include PPC costs for a realistic ROI. Many sellers calculate ROI without ads and are surprised when actual returns are lower. A realistic ROI calculation includes product cost, shipping, all Amazon fees and your typical ad spend per unit.
What is inventory turnover and why does it matter for ROI? +
Inventory turnover measures how many times per year you sell and restock your inventory. High turnover means your cash is always working. Low turnover means capital is tied up in slow-moving stock earning nothing. Aim for at least 3 to 4 inventory turns per year.
How can I improve my Amazon FBA ROI? +
The most effective ways to improve FBA ROI are to negotiate COGS down with your supplier, reduce shipping costs by switching from air to sea freight, optimize your PPC to lower ad spend per unit, increase your selling price through better listing optimization, and focus on faster-turning products to improve annual ROI.