Published November 15, 2025 · Updated June 28, 2026 · 7 min read
If you sell on Amazon using Fulfillment by Amazon (FBA), fees will be your single largest variable cost. Get them wrong and you think you're profitable when you're actually losing money. This guide breaks down every FBA fee category with exact numbers so you can price your products correctly.
Amazon FBA fees fall into two main buckets:
On top of these, you'll pay storage fees monthly for inventory sitting in Amazon's warehouses. Each fee type is explained below.
Amazon assigns every product to a size tier based on its packaged dimensions and weight. The tier determines your fulfillment fee.
| Size Tier | Max Dimensions | Max Weight | Fulfillment Fee |
|---|---|---|---|
| Small Standard | 15" × 12" × 0.75" | 16 oz | $3.06 – $3.33 |
| Large Standard | 18" × 14" × 8" | 20 lbs | $3.68 – $6.34+ |
| Small Oversize | 60" longest side, girth ≤ 130" | 70 lbs | $9.61+ |
| Medium Oversize | 108" longest side, girth ≤ 130" | 150 lbs | $19.97+ |
| Large Oversize | 108" longest side, girth ≤ 165" | 150 lbs | $89.98+ |
Key insight: keeping your product in the Small Standard tier saves you roughly $0.60–$3.00 per unit versus Large Standard. If your product is borderline (e.g., 15.5 oz), it's worth optimizing packaging to stay under 16 oz.
The Large Standard fee scale:
Use our Amazon FBA Fee Estimator — enter your product dimensions and weight to instantly find your size tier and exact fulfillment fee.
Referral fees are Amazon's commission on every sale. They're calculated as a percentage of the total sale price (including any shipping you charge the buyer).
| Category | Referral Fee |
|---|---|
| Consumer Electronics | 8% |
| Camera & Photo | 8% |
| Computers | 8% |
| Home & Kitchen | 15% |
| Sports & Outdoors | 15% |
| Toys & Games | 15% |
| Beauty & Personal Care | 8% (≤$10) / 15% (>$10) |
| Health & Household | 8% (≤$10) / 15% (>$10) |
| Clothing & Accessories | 17% |
| Shoes & Handbags | 15% |
| Grocery & Gourmet Food | 8% (≤$15) / 15% (>$15) |
| Books | 15% |
| Pet Supplies | 15% |
| Office Products | 15% |
Amazon charges a minimum referral fee of $0.30 per item, regardless of the percentage. For very cheap items this matters — a $1.00 item in a 15% category would normally have a $0.15 fee, but Amazon collects $0.30 instead.
Amazon charges monthly storage fees based on the average cubic footage your inventory occupies in their warehouses.
| Period | Standard-Size | Oversize |
|---|---|---|
| January – September | $0.87 / cu ft | $0.56 / cu ft |
| October – December (Q4) | $2.40 / cu ft | $1.40 / cu ft |
Storage costs are easy to underestimate. A product that takes 12 months to sell accumulates $10.44/cu ft ($0.87 × 12) in standard-size storage fees alone. For a product 6"×6"×6" (= 0.125 cu ft), that's $1.31 per unit in annual storage — not devastating, but it adds up across your whole catalog.
Items stored for more than 181 days trigger an aged inventory surcharge (formerly called long-term storage fees). Items over 271 days incur higher surcharges. Amazon emails you periodic inventory health reports — review them and send removal orders before you hit the 181-day mark for slow-moving SKUs.
For each unit, your total Amazon cost is:
Total FBA Cost = Referral Fee + Fulfillment Fee + Storage (monthly) + Other FeesFor a $40 product in the Home & Kitchen category, sold from a small standard package (8 oz):
Subtract your product cost, shipping to Amazon, and ad spend to get your net profit.
Calculate your exact FBA profit
Enter your sale price, product cost, and FBA fee to see net profit, margin, and ROI — instantly.
Open FBA Profit Calculator →For a small standard item (under 16 oz, within 15"×12"×0.75"), the FBA fulfillment fee ranges from $3.06 to $3.33 depending on weight.
Amazon referral fees range from 8% to 17% depending on the product category. Electronics are typically 8%, while clothing is 17%. Most general merchandise categories are around 15%.
Amazon FBA storage fees are $0.87 per cubic foot per month from January to September, and $2.40 per cubic foot per month from October to December (Q4 peak season). Items stored over 181 days incur an aged inventory surcharge.
For a $30 product in a 15% referral fee category with small standard packaging (8 oz), total Amazon fees would be approximately $4.50 referral + $3.15 fulfillment = roughly $7.65, before storage, shipping to Amazon, and ad spend.