Amazon FBA Fee Calculator 2026

How Amazon Seller Fees Work in 2026

Amazon's fee structure is the most complex of any major marketplace. Every sale involves at least a referral fee (Amazon's commission), and if you use FBA, you're also paying fulfillment fees and storage fees. Understanding each layer is critical because Amazon fees can easily consume 30-40% of your selling price if you're not careful.

The three main fee components are: the referral fee (a percentage of the sale price, varying by category), the FBA fulfillment fee (a flat rate per unit based on size and weight), and monthly inventory storage fees (charged per cubic foot of warehouse space). On top of these, there are situational fees for things like long-term storage, returns processing, and advertising.

Amazon referral fees by category

The referral fee is Amazon's commission on every sale. It's calculated as a percentage of the total sale price (including shipping and gift wrap charges). Every category has a set rate, and Amazon also applies a minimum referral fee of $0.30 per item in most categories, whichever is greater.

• Electronics (8%): One of the lowest rates, but high competition and thin margins.
• Clothing & Accessories (17%): High rate, but also high margins on private label apparel.
• Home & Kitchen (15%): The largest Amazon category by number of sellers.
• Beauty & Personal Care (8-15%): Sliding scale — 8% on items over $10, 15% on items $10 and under.
• Toys & Games (15%): Competitive, especially in Q4.
• Books (15%): Flat 15% with a $0.30 minimum.
• Jewelry (20%): 20% on the first $250, 5% above $250.
• Amazon Device Accessories (45%): The highest referral fee category on Amazon.

FBA size tiers and fulfillment fees

FBA fulfillment fees are charged per unit sold and depend on the product's size tier and shipping weight. Amazon measures your product's dimensions and weight, then assigns it to a size tier. Smaller, lighter items cost less to fulfill.

• Small Standard (up to 15" x 12" x 0.75", under 16 oz): ~$3.11-$3.70 per unit. This is the cheapest FBA tier — small accessories, phone cases, etc.
• Large Standard (up to 18" x 14" x 8", under 20 lbs): $3.73-$6.97+ per unit depending on weight. Most products fall into this tier.
• Large Bulky (up to 59" longest side, under 50 lbs): $9.66+ per unit. Starts getting expensive.
• Extra-Large (over 59" or over 50 lbs): $26.38+ per unit. Furniture, large appliances, heavy items.

Amazon updates FBA fee schedules annually (usually effective January or February). The rates above are for 2026. Dimensional weight can also apply: if your product is light but takes up a lot of space, Amazon may use dimensional weight instead of actual weight to calculate fees.

Storage fees: the silent margin killer

Monthly storage fees are where many FBA sellers get burned. Amazon charges per cubic foot of space your inventory occupies:

• January - September: $0.87 per cubic foot (standard size), $0.56 per cubic foot (oversize).
• October - December: $2.40 per cubic foot (standard size), $1.40 per cubic foot (oversize). Nearly 3x the off-peak rate.

The Q4 surge pricing reflects Amazon's warehouse capacity crunch during the holiday season. If you have slow-moving inventory sitting in FBA during October-December, the storage costs can quickly eat into your margins. Plan your Q4 inventory carefully: send in only what you expect to sell, and remove stale inventory before October.

Long-term storage: the aged inventory surcharge

Beyond monthly storage fees, Amazon charges an aged inventory surcharge on units stored for more than 181 days. This is designed to discourage sellers from using Amazon warehouses as long-term storage:

• 181-210 days: $0.50 per cubic foot
• 211-240 days: $1.00 per cubic foot
• 241-270 days: $1.50 per cubic foot
• 271-300 days: $3.80 per cubic foot
• 301-330 days: $4.00 per cubic foot
• 331-365 days: $5.45 per cubic foot
• 365+ days: $6.90 per cubic foot or $0.15 per unit, whichever is greater

The lesson: only send Amazon what you can sell within 90-120 days. Use Amazon's Inventory Performance Index (IPI) dashboard to monitor aging inventory and create removal orders before surcharges kick in.

Hidden Amazon costs most sellers miss

Beyond the main fee structure, several costs catch sellers by surprise:

• Returns processing fee: Amazon charges a returns processing fee equal to the fulfillment fee for items in categories with free returns (Apparel, Shoes, Watches, etc.). Other categories don't incur this charge.
• Amazon Advertising (PPC): Sponsored Products, Sponsored Brands, and Sponsored Display ads are practically required for visibility on competitive listings. Typical ACoS (Advertising Cost of Sale) runs 15-30% for established products, higher for launches.
• Brand Registry costs: A trademark is required ($250-350 through Amazon IP Accelerator, or $350+ through a lawyer). Worth it for A+ Content and brand protection, but it's an upfront cost.
• Product photography and listing optimization: Professional Amazon photos run $50-300 per product. A+ Content design adds $100-500.
• Inbound shipping to FBA: You pay to ship your products to Amazon's fulfillment centers. With Amazon's partnered carrier rates, this typically costs $0.20-0.80 per unit for standard-size items.
• Removal and disposal fees: If you need to pull inventory out of FBA, Amazon charges $0.97-$13.05 per unit depending on size. Disposal is slightly cheaper but you lose the inventory.

6 strategies to reduce Amazon fees

1. Optimize your packaging to fit a smaller size tier. Even a half-inch reduction can drop you from Large Standard to Small Standard, saving $1+ per unit.
2. Manage inventory velocity. Send smaller, more frequent shipments to avoid long-term storage surcharges. Target a 60-90 day supply at FBA.
3. Use FBM for slow-moving or oversized items. The FBA fee premium doesn't make sense for items that sell once a month or weigh 30+ pounds.
4. Monitor your IPI score. A score above 400 avoids storage limits and overage fees. Keep it high by removing stale inventory and maintaining sell-through rates.
5. Optimize your PPC spend. Most sellers waste 20-40% of their ad budget on irrelevant keywords. Regular search term report analysis and negative keyword management can cut your ACoS significantly.
6. Consider Subscribe & Save. Enrolled products get a 10% funding discount from Amazon (not from your margin), and the recurring revenue improves inventory planning and reduces the risk of aged inventory.

FBA vs. FBM: when each makes sense

The FBA vs. FBM decision isn't just about fees — it's about your total landed cost including labor, warehouse space, and the value of Prime eligibility. Here's a framework:

Choose FBA when: Your product is small and light (low FBA fees), you sell in a competitive category where Prime matters, you don't have warehouse infrastructure, or you want to scale without hiring fulfillment staff. FBA also handles customer service and returns for FBA orders.

Choose FBM when: Your product is oversized or heavy (FBA fees would be $10+), you already have a warehouse and packing team, your margins are razor thin, or you sell to a niche audience where Prime doesn't significantly affect conversion. FBM Seller Fulfilled Prime is an option for high-performing sellers who want the Prime badge with their own fulfillment.

Use the calculator above to run the numbers for your specific product. Input your costs for both FBA and self-fulfillment to see which method gives you better per-unit profit.