Understanding Amazon FBA Fees: A Breakdown of Referral, Fulfillment, and Storage Costs

August 15, 2026 · Seller AI

Amazon's FBA (Fulfillment by Amazon) program offers a convenient way to manage inventory, handle customer service, and ship products. However, it comes with its own set of fees. To ensure you're maximizing your profits, it's crucial to understand these costs.

Amazon FBA Fees Overview

Amazon FBA fees generally fall into three main categories: referral fees, fulfillment fees, and storage fees. Understanding these costs will help you make informed decisions on product pricing and profitability.

Amazon Referral Fees

Referral fees are charged based on the category of the product you're selling. These fees typically range from 6% to 45% of the product's sale price. For example, if you're selling clothing, you'll pay a 17% referral fee. The percentage varies depending on the product category, so it's essential to know the specific rates for the items you sell.

Amazon Fulfillment Fees

Fulfillment fees cover the costs of storage, picking, packing, and shipping your products. These fees are calculated based on the product's weight and dimensions. As of 2026, for standard-sized items, the per-unit fulfillment fee ranges from $2.50 to $4.30, depending on the weight. For example, a small item weighing 1 to 2 ounces has a fulfillment fee of $2.50, while a larger item weighing 16 to 22 ounces has a fee of $4.30.

Amazon Storage Fees

Storage fees are charged monthly for the space your inventory occupies in Amazon's warehouses. These fees are calculated based on the cubic feet of storage space used. As of 2026, the monthly storage fee is $0.82 per cubic foot.

It's worth noting that long-term storage fees apply to inventory stored in Amazon's warehouses for over 365 days. The long-term storage fee, as of 2026, is $1.50 per cubic foot.

Understanding FBA Fees by Product Size

Amazon categorizes products into two sizes: standard and oversized. The distinction between these sizes is crucial, as it directly impacts your fulfillment and storage fees. Standard-sized items are those that are 18 inches or shorter on all sides and can fit into an Amazon-provided package. Oversize items exceed these dimensions and are subject to higher fees.

FBA Fees and Product Pricing

Knowing your FBA fees is essential for setting competitive and profitable prices for your products. You can use Amazon's FBA Revenue Calculator to estimate your costs and potential revenue. This tool takes into account referral fees, fulfillment fees, storage fees, and other costs to help you determine the best price for your products.

Seller AI's FBA Fee Management

At Seller AI, our AI agents are specifically designed to help Amazon sellers manage their FBA fees effectively. By analyzing your product categories, dimensions, and storage needs, our AI agents can optimize your inventory management, suggesting the best pricing strategies to maximize your profits while considering FBA fees. With our AI-powered insights, you can stay ahead of the competition and keep more of your earnings.