Amazon FBA Fee Calculator
Detailed breakdown of fulfillment, storage, and referral fees
Calculate Your FBA Fees
Fee Breakdown (Per Unit)
Monthly Totals
Fee Impact
Fulfillment Fees
| Size | Weight | Fee |
|---|---|---|
| Small Std | â¤4oz | $3.22 |
| Small Std | 4-8oz | $3.40 |
| Small Std | 8-16oz | $3.58-3.77 |
| Large Std | â¤4oz | $3.86 |
| Large Std | 4oz-3lb | $4.08-5.40 |
| Large Bulky | 0-50lb | $9.73+ |
| Extra Large | 0-50lb | $26.33+ |
Storage Fees
| Size | Off-Peak | Peak |
|---|---|---|
| Standard | $0.87/cuft | $2.40/cuft |
| Large/XL | $0.56/cuft | $1.40/cuft |
Aged Inventory
| 181-270 days | $0.50-1.50/cuft |
| 271-365 days | $1.80-2.20/cuft |
| 365+ days | $6.90/cuft |
When to Use This Calculator
Pre-Sourcing Analysis
Before placing that supplier order, run the numbers. I've seen sellers order 1,000 units only to realize fulfillment fees killed their margins. Check fees first, negotiate cost second.
Packaging Optimization
Size tiers make a huge difference. A product 15.1" vs 14.9" could cost $2 extra per unit. Test different dimensions here to find the cheapest tier.
Q4 Planning
Storage fees triple during peak season. Toggle between seasons to see the impact. Send just enough inventory to last Q4 without getting crushed by fees.
Aged Inventory Decisions
Products sitting 180+ days? Surcharges kick in hard. Calculate whether to discount, remove, or accept the hit. Set reminders at 150 days.
Category Comparison
Referral fees range 8-45% by category. Compare before committing to a product line. Electronics accessories at 8% vs device accessories at 45% - huge difference.
Financial Forecasting
Building a business plan? You need accurate fee estimates. Get real numbers for your projections instead of guessing. Essential for cash flow planning.
Frequently Asked Questions
What are the main FBA fee types?
Three big ones: Referral fees (Amazon's cut, 8-45%), fulfillment fees (pick, pack, ship based on size/weight), and storage fees (warehouse rent per cubic foot). Storage sneaks up on you if inventory sits too long.
How are fulfillment fees calculated?
Two factors: size tier and weight. Products get classified by dimensions (small/large standard, bulky, extra-large). Within each tier, heavier = more expensive. A 4oz small standard is $3.22, same tier at 16oz is $3.77.
What's the referral fee for my category?
Most are 15%. Electronics accessories/cameras are 8%. Computers 12%. Clothing 17%. Jewelry 20%. Amazon device accessories 45%. There's also a $0.30 minimum per item for low-priced products.
How much are storage fees?
Standard items: $0.87/cuft off-peak (Jan-Sep), $2.40/cuft peak (Oct-Dec). Large items are cheaper at $0.56/$1.40. The killer is aged inventory - 181+ days gets surcharges up to $6.90/cuft.
What is aged inventory surcharge?
Amazon's "move it or pay" fee. Starts $0.50/cuft at 181 days, escalates to $1.80 at 271 days, then $6.90+ after a year. On top of regular storage. Set calendar reminders at 150 days.
How can I reduce FBA fees?
Optimize packaging for smaller tiers (even 1 inch matters), maintain fast turnover, remove slow movers before 181 days, use FBA New Selection Program for waivers, bundle products to spread costs.
Are fees different during peak season?
Storage fees nearly 3x higher Oct 15 - Jan 14. Fulfillment may have peak surcharges too. Irony: you want max inventory for holiday sales but storage costs the most. Plan carefully.
Does this include all Amazon fees?
Core FBA fees: referral, fulfillment, storage. Not included: removal fees, prep service, return processing, advertising, $39.99 monthly Pro subscription. Add those based on your situation.
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