How much are Amazon FBA fees really costing you? Estimate referral fees, fulfillment fees, and storage costs — and see your true net profit per unit and per month.
A $25 Home & Kitchen product in a 12 × 8 × 4 in box weighing 1.2 lb (Large Standard), standard storage, 100 units/month. Product cost $6.00, inbound shipping $0.50.
Referral fee: $3.75 (15% × $25.00)
Fulfillment fee: $4.69 (Large Standard, 1–1.5 lb tier)
Storage fee: $0.19 (0.222 cu ft × $0.87)
Total Amazon fees: $8.63 per unit
Net profit: ≈ $9.87 per unit (39.5%)
Monthly net profit: ≈ $987.00 at 100 units/month
These are exactly the numbers this calculator produces with the default inputs — try it above.
A $15 Beauty product in a 6 × 4 × 0.5 in box weighing 4 oz (Small Standard). Product cost $4.00, inbound shipping $0.40.
Referral fee: $2.25 (15% × $15.00)
Fulfillment fee: $3.06 (Small Standard, 0–6 oz tier)
Storage fee: $0.01 (0.007 cu ft × $0.87)
Total Amazon fees: $5.32 per unit
Net profit: ≈ $5.28 per unit (35.2%)
A $120 jacket in a 10 × 8 × 2 in box weighing 0.9 lb (Large Standard). Product cost $40.00, inbound shipping $0.75.
Referral fee: $17.25 (17% on first $75 + 10% above)
Fulfillment fee: $4.32 (Large Standard, 12–16 oz tier)
Storage fee: $0.08 (0.093 cu ft × $0.87)
Total Amazon fees: $21.65 per unit
Net profit: ≈ $57.60 per unit (48.0%)
Clothing carries one of the highest referral rates — 17% on the first $75 of every sale.
A $60 Toys & Games item in a 16 × 12 × 6 in box weighing 3.2 lb (Large Standard), stored at the peak rate of $2.40/cu ft. Product cost $25.00, inbound shipping $1.00.
Referral fee: $9.00 (15% × $60.00)
Fulfillment fee: $5.62 ($5.55 base + $0.33/lb above 3 lb)
Storage fee: $1.60 (0.667 cu ft × $2.40 peak) — just $0.58 at the standard rate
Total Amazon fees: $16.22 per unit (peak) vs $15.20 (standard)
Net profit: ≈ $17.78 per unit (29.6%)
When you sell through Fulfillment by Amazon, you pay three main fees: a referral fee (commission on the sale), an FBA fulfillment fee (picking, packing, and shipping), and a monthly storage fee (warehouse space). Subtract product cost and inbound shipping, and what's left is your true net profit per unit.
$25 Home & Kitchen product, 12 × 8 × 4 in box, 1.2 lb → Large Standard (a 4 in shortest side disqualifies Small Standard).
Referral: $25.00 × 15% = $3.75 · Fulfillment: $4.69 (1–1.5 lb tier) · Storage: 0.222 cu ft × $0.87 = $0.19
Total fees: $3.75 + $4.69 + $0.19 = $8.63/unit · Net profit: $25.00 − $8.63 − $6.00 − $0.50 = $9.87/unit (39.5%)
Monthly: $9.87 × 100 units = $987.00 net profit
With Fulfillment by Amazon (FBA), you send inventory to Amazon's warehouses and Amazon handles storage, picking, packing, and shipping. In exchange, Amazon charges three main fees per unit: the referral fee (a commission on the sale price), the FBA fulfillment fee (based on size tier and weight), and a monthly storage fee (per cubic foot of inventory).
Most sellers are surprised how fast these add up: on a $25 Home & Kitchen product, Amazon keeps $8.63 of every $25 sale (about 35%). Run the numbers before you order inventory — a product that looks profitable at list price can quietly turn into a loss once all three fees apply.
| Category | Referral Fee | Maximum per Item |
|---|---|---|
| Electronics | 8% | $100 |
| Clothing & Accessories | 17% on first $75, then 10% | $75 |
| Jewelry | 20% on first $250, then 5% | $200 |
| Grocery & Gourmet | 15% | $300 |
| Beauty, Health & Personal Care | 15% | $100 |
| Home & Kitchen | 15% | $200 |
| Toys & Games | 15% | $100 |
| Sports & Outdoors | 15% | $100 |
| Automotive | 15% | $200 |
| All Other Categories | 15% | $100 |
The referral fee is charged on the sale price Amazon collects from the buyer. Most categories sit at 15%, so 15% is a safe default if you're unsure. The dropdown above uses these exact rates and caps.
The FBA fulfillment fee covers picking, packing, and shipping. It depends on your package's size tier and shipping weight, which Amazon rounds up to the nearest 0.1 lb. The two standard tiers that cover most products:
Sort your three dimensions: if the longest ≤ 15 in, median ≤ 12 in, shortest ≤ 0.75 in, and weight ≤ 12 oz, you qualify for Small Standard. Otherwise it's Large Standard (up to 18 × 14 × 8 in). Larger packages fall into oversize tiers with different pricing — this calculator flags that case as an estimate.
| Shipping Weight | Small Standard | Large Standard |
|---|---|---|
| 0–6 oz | $3.06 | $3.77 |
| 6–12 oz | $3.19 | $4.13 |
| 12–16 oz | — | $4.32 |
| 1–1.5 lb | — | $4.69 |
| 1.5–2 lb | — | $4.84 |
| 2–3 lb | — | $5.55 |
| 3–21 lb | — | $5.55 + $0.33 per lb above 3 lb |
Storage is charged per cubic foot: (L × W × H in inches) ÷ 1728 gives you cubic feet. The rate is $0.87/cu ft during standard months and $2.40/cu ft during peak season (October–December). Inventory aged 181 days or more also triggers a long-term storage surcharge.
FBA fees are the biggest variable cost of selling on Amazon — and largely within your control:
Run every product through this calculator before you buy inventory. A $25 item carries ~$8.63 in Amazon fees — make sure your price clears that plus product cost.
Crossing from Large to Small Standard saves $0.71–$2.36 per unit. Slim packaging (shortest side under 0.75 in, weight under 12 oz) saves thousands per year at scale.
Units stored 181+ days incur a long-term storage surcharge. Discount slow movers, run removal orders, and use the Aged Inventory report to stay ahead.
For bulky or slow-moving items, Fulfillment by Merchant (FBM) can beat FBA — you skip storage and fulfillment fees but pay your own shipping and lose the Prime badge. Compare both before committing.
Remember: Amazon updates its fee schedule every year, usually in January. The rates in this calculator reflect the US 2025 fee tables — always confirm the current numbers in Seller Central before pricing your products.
⚠️ Important Financial Disclaimer: This Amazon FBA Fee Calculator is for informational and educational purposes only. It provides estimates based on the inputs you provide and should not be considered financial, tax, or legal advice. Amazon updates its fee schedule every year (typically in January), and actual fees vary by category, size tier, season, seller plan, and region. Long-term storage surcharges, removal, disposal, return-processing, and inbound placement fees are not included. Always check the current FBA fee tables in Seller Central before pricing your products.