Amazon FBA Fees in 2026: What Changed and What It Actually Costs You
Amazon raised FBA fees again in 2026. Here's what changed, what it means per unit, and why the fee schedule only tells half the story if you import products.
Amazon published their 2026 FBA fee schedule in late 2025, and the headline was "an average increase of $0.08 per unit." That sounds like nothing. It's not nothing, and the average hides a lot of variance. But more importantly, the fee schedule itself only covers about half the costs of selling imported products on Amazon.
Here's what actually changed, what it costs, and where the real margin leaks are hiding.
What changed in 2026
Fulfillment fees went up, unevenly. Amazon introduced price-based fee tiers for the first time. Two products with identical dimensions can now have different fulfillment costs depending on their selling price. Standard-size items priced between $10 and $50 saw increases of about $0.25 per unit. Items under $10 got a slightly larger Low-Price FBA discount ($0.86 per unit, up from $0.77 in 2025). Items over $50 pay the most.
For a typical standard-size product weighing 12-16 oz priced between $10 and $50, the fulfillment fee is now $4.60. At 500 units per month, that $0.25 increase adds $125 per month. Not catastrophic on its own, but it stacks with everything else.
Amazon killed prep services. This is the bigger deal. As of January 1, 2026, Amazon discontinued all FBA prep and labeling services in the US. If your supplier doesn't ship inventory shelf-ready, you now need a third-party prep center. That's a new cost line that didn't exist before: typically $0.50-2.00 per unit depending on the prep requirements. Some sellers were paying Amazon $0.20-0.50 per unit for this. Now they're paying more to a third party, or spending time doing it themselves.
Inbound placement fees crept up. Standard-size products saw about a $0.05 per unit increase when using minimal shipment splits. The bigger hit is for large bulky products, which saw $0.27 per unit increases on minimal splits. The "Amazon-optimized splits" option remains free, but it requires shipping at least five identical cartons per item.
Storage rates stayed flat. $0.87 per cubic foot January through September, $2.40 October through December for standard-size. After years of annual storage increases, that stability is worth noting. But the storage utilization surcharge got more aggressive: sellers with 44+ weeks of inventory now pay $1.58-1.88 per cubic foot on top of the base rate.
Low-inventory-level fee changed scope. It now applies at the FNSKU level instead of the parent ASIN level. If you sell a product in five colors and only stock three well, you'll get hit on the two slow variants even if the parent ASIN has plenty of overall inventory.
The fee layers most sellers don't add up
When sellers talk about "Amazon fees," they usually mean the referral fee and fulfillment fee. But the actual fee stack is deeper than that.
On a $25.00 standard-size product (12 oz, priced $10-50):
- Referral fee (15%): $3.75
- FBA fulfillment: $4.20
- Monthly storage (avg, assuming decent turnover): $0.35
- Inbound placement (minimal splits): $0.42
- Total Amazon fees: $8.72 per unit (34.9% of selling price)
Most sellers stop here. But that 34.9% doesn't include removal/disposal fees for damaged inventory, return processing fees (now charged when your return rate exceeds a category threshold), or the low-inventory-level fee if your stock dips below 28 days of supply.
A new seller stocked up in September for the holiday rush, not realizing that monthly storage fees jump from $0.87 to $2.40 per cubic foot for standard items during Q4. On 2,000 units of a bulky product, the Q4 storage increase alone cost an extra $1,200 that wasn't in their profit calculations. Combined with the aged inventory surcharge they hit at the 180-day mark in March, storage fees turned a profitable product into a loss.
Starting in 2024, Amazon introduced inbound placement service fees for shipments that don't split across multiple fulfillment centers. Sellers who had always shipped to a single FC suddenly saw $0.30 to $1.50 per unit added to every inbound shipment. On a product with a $3.50 margin, that's 8-43% of profit gone. Many sellers didn't notice the fee until they audited their payment reports months later.
The half Amazon's calculator doesn't show
Here's the thing that bothers us about every FBA fee guide (including Amazon's own calculator). They all stop at Amazon's fees. If you import products, Amazon's fees are roughly half your total cost stack.
The other half: ocean freight allocation, MFN customs duties, Section 301 tariffs, the Section 122 global surcharge, customs brokerage. On a $25.00 product sourced from China, these hidden costs can easily add $4-6 per unit that Amazon's Revenue Calculator completely ignores.
A mid-volume seller ran their full cost waterfall and discovered that Amazon's combined fees (referral + fulfillment + storage + inbound placement) consumed $8.90 of their $29.99 selling price, while total import costs (freight + duties + brokerage) came to $5.40. They'd spent months focused on the Amazon fee side, optimizing packaging to fit smaller size tiers, negotiating storage, while the duty stack was the cost center they'd never actually calculated.
This is why a fee-only calculator gives you a number that looks great but doesn't match your bank account. You need the full cost waterfall from factory to customer, not just the Amazon slice.
What you can actually control
Some of these fees are fixed. Amazon's referral fee is 15% for most categories and that's that. But several cost lines respond to optimization:
Size tier placement. A few millimeters can bump you from small standard ($3.32 fulfillment) to large standard ($3.73). Measure your packaged product carefully. If you're close to a tier boundary, work with your supplier on packaging that keeps you in the cheaper tier.
Inbound placement. The minimal splits option costs $0.27-1.71 per unit depending on size and weight. The Amazon-optimized option is free but requires five identical cartons. If your shipment volumes support it, the optimized option saves real money.
Storage velocity. The aged inventory surcharge kicks in at 181 days. The storage utilization surcharge hits high-ratio sellers. Both are avoidable with tighter inventory planning. The goal is 30-60 days of supply: enough to avoid the low-inventory fee, not so much that you trigger storage penalties.
The costs Amazon doesn't touch. Freight, duties, and customs brokerage sit outside Amazon's fee structure entirely, but they respond to sourcing decisions. The Section 301 tariffs only apply to China-origin goods. Sourcing from Vietnam or India eliminates that layer, though the Section 122 global surcharge (15%) still applies to all countries. Even if FOB costs are higher, the tariff savings often more than compensate. Compare countries side by side to see the actual math.
The real number
Run this exercise on your own products. Add up every Amazon fee (referral, fulfillment, storage, inbound placement). Then add the import costs (freight per unit, MFN duty, Section 301 if applicable, Section 122, brokerage per unit). Compare the total to your selling price.
If the number surprises you, you're in the majority. Most sellers overestimate their margin by 15-40 percentage points because they're only looking at half the cost stack.
The MarginStack calculator runs this entire calculation using real tariff rates from the USITC database and Amazon's 2026 fee schedule. It takes about 60 seconds and the result is usually a gut check.