Amazon FBA Fees: A Complete Breakdown for Sellers

Amazon is one of the most complex platforms when it comes to seller fees. Between referral fees, FBA fulfillment costs, storage fees, and advertising, understanding your true profit margin requires careful calculation. This guide covers every fee category you will encounter as an Amazon seller.

Referral Fees by Category

Amazon charges a referral fee on every sale, and the rate varies by product category. Electronics pay 8%, clothing pays 17%, while home and kitchen, toys, books, sports, and handmade items pay 15%. Some categories have tiered structures: beauty products pay 8% under $10 and 15% above, while jewelry pays 20% up to $250 and 5% above that threshold. The "everything else" category defaults to 15%.

FBA Fulfillment Fees

If you use Fulfillment by Amazon (FBA), Amazon picks, packs, and ships your products for a per-unit fee based on the item's size tier and weight. Products are classified into size tiers: small standard (up to 15" x 12" x 0.75", under 1 lb), large standard (up to 18" x 14" x 8", under 20 lbs), small oversize (up to 60" x 30", under 70 lbs), and large oversize (over 60" on the longest side or over 70 lbs). Fulfillment fees range from roughly $3.22 for the smallest items to $90+ for large oversize products, with weight-based surcharges above tier thresholds.

Individual vs Professional Plans

Amazon offers two seller account types. The Individual plan charges $0.99 per item sold with no monthly fee, suitable for sellers moving fewer than 40 units per month. The Professional plan costs $39.99/month with no per-item fee, making it more economical once you sell more than about 40 items monthly. Professional sellers also gain access to advertising tools, bulk listing, and the Buy Box.

Storage Fees

FBA sellers pay monthly storage fees based on the cubic footage their inventory occupies in Amazon's warehouses. Standard-size rates range from roughly $0.87 per cubic foot during January through September to $2.40 per cubic foot during the peak holiday season (October through December). Oversize items have different rates. Long-term storage surcharges apply to inventory stored beyond 365 days, so managing your inventory turnover is essential to avoiding excess fees.

Advertising and PPC Costs

Most Amazon sellers invest in Sponsored Products advertising to gain visibility. The cost depends on your Advertising Cost of Sale (ACoS), which represents the percentage of sales revenue spent on ads. An ACoS of 20-30% is common for established products, while new product launches often require 40-50% or higher to build sales velocity and reviews. Use the calculator above to model different ACoS percentages and see the real impact on your per-unit profit.

Check your product's referral fee category before pricing, as rates range from 8% to 20%
Measure and weigh your product accurately to determine the correct FBA size tier and fulfillment cost
Switch to a Professional account once you consistently sell more than 40 units per month
Monitor ACoS closely and use the calculator to find the ACoS threshold where your product remains profitable