Amazon FBA Fees in 2026: A Seller's Complete Cost Breakdown

The five fee categories that matter

1. Referral fees: Amazon's commission on every sale
2. Fulfillment fees: pick, pack, ship of each unit (and removal)
3. Storage fees: monthly inventory holding
4. Inbound placement fees: added 2024-2025, the cost of Amazon distributing your inventory
5. Penalty fees: low-inventory, long-term storage, aged inventory surcharge

The first three are predictable. The last two are the ones that catch sellers and create the "where did my margin go" conversations.

Referral fees

Referral fees are Amazon's commission. They run 8% (some grocery categories) to 17% (most categories, including consumer electronics, home goods, kitchen) to 45% (Amazon Device accessories) of the sale price.

For most ConnectBooks customers, the referral fee is 15%. There's no fee predictability problem with referrals. The accounting problem is that this fee is deducted from gross sales before payout, so the seller never sees the gross-to-net gap on their bank statement.

Fulfillment fees

FBA fulfillment fees in 2026 are tier-based by product size and weight:

• Small standard (under 6 oz): $3.06 per unit
• Small standard (6-12 oz): $3.28 per unit
• Large standard (12-16 oz): $3.43 per unit
• Large standard (1-2 lb): $4.46 per unit
• Large standard (2-3 lb): $5.30 per unit
• Large bulky (over 3 lb): $9.61 + $0.38 per pound above 3 lb

Apparel categories pay an additional surcharge (currently $0.40 per unit). Hazardous materials carry their own fee schedule and require pre-approval to sell.

Storage fees

FBA storage is charged monthly on the average daily volume of your inventory:

• January through September: $0.78 per cubic foot (standard) / $0.56 (oversize)
• October through December: $2.40 per cubic foot (standard) / $1.40 (oversize)

Q4 storage fees are roughly 3x the rest of the year. Pulling inventory out of FBA at end of September and sending the right amount back in early October has become a meaningful Q4 cost-management lever. ConnectBooks customers see the storage fee per SKU in their margin reports and can identify which SKUs to pull before Q4.

Inbound placement fees

This is the fee that has caught most sellers off guard. Amazon now charges sellers for distributing inbound inventory across multiple fulfillment centers. The fee scales:

• Minimal shipment splits (you send to one center, Amazon distributes): $0.27 to $1.30 per unit for standard sized items, depending on dimensions and weight
• Partial splits (you send to 2-3 centers): $0.21 to $1.00 per unit
• Optimized splits (you send to 4+ centers): $0 to $0.49 per unit

Most sellers absorb the higher per-unit cost rather than pay 3PL costs to pre-distribute, but the calculation should be deliberate. For a high-volume seller, the placement fee can run $0.40 to $1.00 per unit, which is meaningful margin.

Penalty fees: low inventory and long-term storage

Two penalty fees deserve attention:

Low Inventory Level Fee. If you fall below a 28-day historical sell-through cover on a SKU, Amazon charges a per-unit fee on sales until you're back above the threshold. The fee is calculated as a percentage of the FBA fulfillment fee. Practical impact: planning for 30+ days of cover at all times.

Long-term storage fee. Units in FBA over 271 days incur an extra $0.50 per cubic foot per month (on top of regular storage). Over 365 days, the fee escalates. Dead SKUs in FBA are bleeding storage in the background.

ConnectBooks surfaces both of these in monthly P&L breakdowns. The "what are my penalty fees this month" answer is one query in Crunch, which then drills into which SKUs are causing them.

Worked example: a $24 product

A kitchen gadget sells for $24 on Amazon. FBA standard size, 1 lb. Landed cost $5.15 (from the landed cost worked example).

• Sale price: $24.00
• Referral fee (15%): -$3.60
• FBA fulfillment fee: -$4.46
• Storage fee (annualized per unit at average cover): -$0.18
• Inbound placement fee (typical): -$0.40
• Returns reserve (3% return rate, restocking + lost inventory): -$0.36
• Advertising attributed (15% TACoS): -$3.60
• Landed cost: -$5.15
• Contribution margin: $6.25 (26%)

If the seller misses the placement fee in their unit economics and budgets advertising assuming 30% margin, they're 4% short on contribution every month. ConnectBooks variable COGS includes all of these fees so the per-SKU contribution margin reflects reality.

How to track Amazon fees in your books

The chart of accounts structure that works for FBA sellers:

• Sales, Amazon (gross sales: what Amazon reports as ordered)
• Amazon referral fees (per-order)
• Amazon FBA fulfillment fees (per-unit)
• Amazon storage fees (monthly)
• Amazon inbound placement fees (per-shipment, allocated per unit)
• Amazon penalty fees (low inventory, long-term storage)
• Amazon advertising (PPC and Brand Defense, separately if you can)
• Amazon refunds (contra-revenue)
• Amazon promotional discounts (contra-revenue, separately from refunds)

Booking all of these to one combined "Amazon fees" line collapses the visibility you need to optimize the operation.

Are FBA fees going up again in 2026?

Amazon has historically raised fees annually. The 2026 increases (effective February) raised most fulfillment tiers $0.04 to $0.18 per unit and bumped the inbound placement fee structure. Track the announced 2027 changes in Seller Central.

Can I avoid placement fees by sending to one warehouse?

No. The "minimal shipment splits" tier (one warehouse) is now the most expensive option. To pay $0 to $0.49 per unit, you need to send to 4+ warehouses, which most sellers achieve through a 3PL that pre-distributes.

Should I move to FBM to escape FBA fees?

FBM avoids fulfillment fees but loses Prime eligibility on most ASINs, which usually costs more in lost sales than the fees. The exception: oversize and heavy products where FBA fees are punishing. Run the unit economics on each SKU.

Take Control of Your E-Commerce Business with ConnectBooks

Running an e-commerce business comes with plenty of challenges, but ConnectBooks is here to make your life easier. With real-time insights, seamless integrations, and detailed tracking of your profitability and inventory, you can stay ahead of the game. Whether you’re selling on Amazon, Shopify, Walmart, TikTok or eBay, ConnectBooks helps you manage your finances with 100% accuracy and confidence, so you can focus on growing your business.

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