Amazon FBA Calculator
Estimate your Amazon referral fees, FBA fulfillment charges, monthly storage rates, and net seller margins.
$29.99 Retail
FBA Fees: $9.30
COGS & Freight: $8.70
| Amazon Cost Breakdown | Calculated Value |
|---|---|
| Referral Transaction Fee | $4.50 |
| FBA Fulfillment (Pick & Pack) Fee | $4.75 |
| Monthly Inventory Storage Fee | $0.05 |
| Total Amazon Marketplace Fees | $9.30 |
| Sourcing Expenses (COGS + Freight) | $8.70 |
| Projected Net Payout (Margin: 40.0%) | $11.99 |
How Amazon FBA Fees Work
Fulfillment by Amazon (FBA) is an extremely popular logistics program that allows third-party sellers to outsource warehousing, packaging, customer support, and returns processing directly to Amazon. While FBA unlocks automatic access to Amazon Prime buyers and boosts search rankings, it has a complex, multi-tiered fee system. Utilizing our Amazon FBA Calculator helps sellers audit their gross margins before shipping products to fulfillment hubs.
Key Amazon Seller Fee Categories
Every sale on Amazon FBA is subject to three primary transaction fees:
1. Amazon Referral Fee
The referral fee is a commission Amazon charges for bringing buyers to your listing. It is a percentage of the total sales price (item price + shipping charges), typically ranging from **8% to 15%** depending on the category. For example, Home & Kitchen items carry a 15% rate, whereas consumer electronics carry a lower 8% rate.
2. FBA Fulfillment (Pick & Pack) Fee
The fulfillment fee covers the cost of Amazon employees locating, packing, shipping, and handling customer returns. This fee is calculated based on the **unit weight and dimensional package measurements** (Length, Width, Height) to classify items into standard-size or oversize categories. Lightweight standard-size items (under 1 lb) cost between $3.22 and $3.89 to fulfill, while heavier packages incur surcharges.
3. Monthly Inventory Storage Fee
Amazon charges monthly rent for storing your inventory in their fulfillment warehouses. This rate is calculated on the **cubic volume (Length x Width x Height in inches divided by 1,728)** of your packaged product. Crucially, storage fees increase significantly during the holiday season:
- Standard Season (January – September): $0.78 per cubic foot.
- Peak Holiday Season (October – December): $2.40 per cubic foot (a triple increase). High-volume sellers must optimize inventory turn rates to avoid high peak storage rates.
FBA vs. FBM: Which Fulfillment Model is Better?
- Fulfillment by Amazon (FBA): Recommended for lightweight, high-volume products with stable sales. FBA makes your products Prime-eligible, driving higher conversions, but carries additional fulfillment and storage costs.
- Fulfillment by Merchant (FBM): Best for heavy, oversized, custom-order, or slow-moving items. Under FBM, you store and ship the items yourself, avoiding FBA pick-and-pack and storage surcharges, though you must handle customer service and returns processing.