Amazon FBA Profit & Fee Calculator
Calculate your net profit, Amazon referral fees, and FBA fulfillment costs instantly.
Most Categories (15%)
Electronics (8%)
Clothing & Accessories (12%)
Home & Kitchen (15%)
Books (15% + Variable Closing)
Amazon Device Accessories (45%)
Small Standard (<1lb)
Large Standard (1-2lb)
Large Standard (2lb+)
Oversize
Referral Fee:
$0.00
FBA Fulfillment Fee:
$0.00
Storage Fee (Est.):
$0.00
Total Amazon Fees:
$0.00
Net Profit per Unit:
$0.00
Net Margin:
0.00%
How Amazon FBA Fees Work
Selling on Amazon via Fulfillment by Amazon (FBA) involves several different fee structures that can eat into your margins if not calculated correctly. To maximize your Amazon business, you need to understand three primary cost components: Referral Fees, Fulfillment Fees, and Monthly Storage Fees.
1. Amazon Referral Fees
This is essentially a commission Amazon charges for every item sold on their platform. For most categories, this fee is a flat 15%. However, some categories like personal electronics have a lower rate (8%), while others like jewelry have higher minimums.
Realistic Example:
If you sell a kitchen gadget for $25.00 in a 15% category, your referral fee is $3.75.
If you sell a kitchen gadget for $25.00 in a 15% category, your referral fee is $3.75.
2. FBA Fulfillment Fees
These fees cover the cost of picking, packing, shipping, and providing customer service for your products. This fee is heavily dependent on the "Size Tier" and the "Shipping Weight" of your product. A standard small item weighing less than 1lb will cost significantly less to ship than a heavy "Oversize" item.
3. Monthly Inventory Storage Fees
Amazon charges for the space your inventory occupies in their fulfillment centers. These fees are calculated based on cubic feet. Note that these fees increase significantly during the Q4 holiday season (October–December).
Tips to Increase Your FBA Profit Margins
- Optimize Packaging: Reducing the dimensions of your product box can move you from a "Large Standard" tier to a "Small Standard" tier, potentially saving dollars per unit.
- Bundle Products: Since the FBA fulfillment fee is charged per unit, bundling multiple items into one SKU allows you to pay the fulfillment fee once instead of twice.
- Monitor Long-Term Storage: Avoid keeping inventory in Amazon warehouses for more than 180 days to prevent "Aged Inventory Surcharges."
FBA Math Formula
To calculate your profit manually, use this formula:
Profit = Sale Price - COGS - Referral Fee - Fulfillment Fee - Shipping to Amazon - Storage Fee