How to Use This Amazon FBA Fee Calculator
Use this free Amazon FBA fee calculator to understand exactly what Amazon charges on every sale. Enter your sale price, category, and fulfillment details to get an instant breakdown.
- Enter your Sale Price — the price customers pay on Amazon
- Select your Category — referral fees range from 6% to 17%
- Enter your FBA Fulfillment Fee — based on size and weight (Amazon standard rates)
- Add Inbound Shipping cost per unit
- Results show total fees, net payout, and effective rate instantly
Amazon FBA Fee Structure (2026)
Amazon charges five types of FBA fees:
- Referral Fee: 6–17% of sale price, varies by category
- FBA Fulfillment: $3.22–$52.38 per unit (based on size tier and weight)
- Inbound Shipping: Your cost to ship products to Amazon's warehouse
- Storage Fees: $0.78–$2.40/cubic foot/month (higher Oct–Dec)
- Closing Fee: $0 for most categories ($0.50 for media items only; standard $1.80 fee cancelled in 2024)
- Low-Inventory-Level Surcharge: $0.04–$0.89/unit if stock covers fewer than 28 days of demand (encourages sellers to maintain healthy inventory)
Amazon FBA Storage Fees 2026 (Updated)
Amazon FBA storage fees vary by month, with significant Q4 surcharges. A dedicated FBA Storage Fee Calculator is available for detailed storage cost analysis.
- January–September: $0.78/cubic foot/month (standard size)
- October–December (Peak): $2.40/cubic foot/month (3× normal rate)
- Long-Term Storage Surcharge (90+ days): $6.90/cubic foot (items 91–180 days), $15.60/cubic foot (181+ days)
- Storage Utilimeter Surcharge: Applied to inventory exceeding expected capacity
Storage fee example: 100 units in 6" × 4" × 2" boxes
Volume per unit = 0.028 cubic feet → 100 units = 2.8 cubic feet
Standard storage (Jan–Sep): 2.8 × $0.78 = $2.18/month
Peak storage (Oct–Dec): 2.8 × $2.40 = $6.72/month
Long-term (181+ days): 2.8 × $15.60 = $43.68/month
Amazon FBA Fee Formulas
Referral Fee = Sale Price × Category Rate
Total FBA Fees = Referral Fee + Fulfillment + Inbound Shipping + Storage + Closing
Net Payout = Sale Price − Total FBA Fees
Effective Fee Rate = (Total FBA Fees ÷ Sale Price) × 100%
Real-World Example
Note: The calculator above defaults to the 15% "most categories" referral fee. The Clothing example below uses 17% instead (per Amazon's Apparel category rate), which is why the total fee of $15.60 (39% effective rate) is higher than the calculator's default $15.00 (~37.5%) for the same $39.99 sale price.
Scenario: Clothing product, $39.99 sale price, standard 1-lb item (17% category referral)
Referral Fee: $39.99 × 17% = $6.80
FBA Fulfillment: $5.50 (standard size 1 lb)
Inbound Shipping: $1.50/unit
Closing Fee: $0.00 (most categories; $0.50 for media items)
Total Fees: $6.80 + $5.50 + $1.50 + $0.00 = $13.80
Net Payout: $39.99 − $15.60 = $24.39
Effective Fee Rate: 39% — much higher than the 17% referral fee most people quote
Why Most Sellers Underestimate FBA Fees
Most beginner guides quote "15% referral fee" and stop there. The real all-in fee is 17–40% depending on your product category and weight. A 2-lb product costs 65% more in fulfillment than a 10oz product in the same category. Q4 storage spikes (October–December) triple your storage costs from $0.78 to $2.40/cubic foot/month.
- Price correctly: Know your true costs before launching
- Evaluate product ideas: High-category-fee products need higher margins
- Plan for peak season: Q4 storage fees are 3× normal rates
- Compare to FBM: Calculate whether self-fulfillment is cheaper
Frequently Asked Questions
What are Amazon referral fees by category?
Electronics: 8%, Clothing: 17%, Books: 12%, Beauty: 6%, Home & Garden: 10%, Most categories: 15%. Maximum is 45% for certain media items. Always check the latest fee schedule in Seller Central.
How much does FBA fulfillment cost per unit?
FBA fulfillment fees (2026): Standard size under 0.5 lb: $3.22. 0.5–1 lb: $3.40. 1–2 lb: $5.24. Oversize items range from $8.26 to $52.38 depending on dimensions.
Does FBA or FBM cost more?
It depends. FBM (Fulfillment by Merchant) saves the fulfillment fee but requires you to handle storage, picking, packing, and shipping. FBA is typically cheaper for sellers doing 100+ orders/month because Amazon's fulfillment at scale beats merchant fulfillment overhead.
What happens to FBA fees in Q4?
Storage fees jump 3× in October–December. From January–September: $0.78/cu ft. From October–December: $2.40/cu ft. Factor this into holiday product pricing.
Can I reduce Amazon FBA fees?
Referral and fulfillment fees are fixed by Amazon. You can reduce costs by: optimizing packaging to smaller size tiers, negotiating inbound shipping rates, keeping inventory moving to avoid long-term storage fees, and sourcing lighter products.