Amazon FBA Profit Calculator
Calculate Amazon FBA fees, fulfillment rates, storage costs, product referral fees, net margins, and inventory ROI. Free client-side tool.
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Calculating Net Profit Margins for Amazon FBA Sellers
Selling on Amazon via FBA (Fulfillment by Amazon) offers scale and logistics benefits, but requires managing multiple service fees. Understanding these expenses is vital to choosing viable sourcing products.
FBA Fee Structure
- Referral Fee: The percentage Amazon charges for selling on their catalog platform (typically 8% to 15% depending on category).
- Fulfillment Fee: A flat charge per unit based on package dimensions and shipping weight to pick, pack, and ship orders.
- Monthly Storage: A charge based on volume (cubic feet) of inventory held in Amazon fulfillment centers.
The Amazon FBA Equations
$$\text{Referral Fee Amount} = \text{Selling Price} \times \left(\frac{\text{Referral Fee \%}}{100}\right)$$ $$\text{Total FBA Costs} = \text{COGS} + \text{Shipping} + \text{FBA Fulfillment Fee} + \text{Referral Fee Amount} + \text{Storage Fee}$$ $$\text{Net Profit} = \text{Selling Price} - \text{Total FBA Costs}$$ $$\text{Net Margin \%} = \left(\frac{\text{Net Profit}}{\text{Selling Price}}\right) \times 100$$ $$\text{ROI \%} = \left(\frac{\text{Net Profit}}{\text{COGS} + \text{Shipping}}\right) \times 100$$Frequently Asked Questions (FAQ)
What is the referral fee on Amazon?
The referral fee is a commission Amazon takes on each sold item. It is a percentage of the final retail price, typically 15% for most retail categories.
How is the FBA fulfillment fee determined?
The fulfillment fee is determined by shipping weight and packaging dimensions. Amazon classifies products into size tiers (e.g., standard size, oversize) which dictate flat fulfillment rates.
How does storage fee variation affect profit?
Amazon raises warehouse storage fees during Q4 holiday months (October - December). Shippers should calculate holiday profits with higher storage rates to prevent unexpected fee impacts.
What is a good target ROI for Amazon FBA?
Most experienced Amazon sellers target a minimum of 100% ROI on their sourcing capital, meaning they double their investment per unit to absorb advertising costs.