Finance

Where the margin goes: the 2026 fee stack, line by line

Most brands know their referral fee. Far fewer can say what they paid last month for inbound placement, low inventory, storage, returns processing, and the fuel and logistics surcharge that arrived on fulfillment fees in April. The margin does not leave in one line. It leaks in six.

What changed this year

In January Amazon restructured inbound placement fees with new weight bands and a split of the large bulky tier, and widened the low-inventory-level fee to more categories. In April a fuel and logistics-related surcharge was added on top of FBA fulfillment fees. Each change is a few cents per unit. Across a catalogue and a quarter, a few cents per unit is the difference between a product that earns and one that does not.

The pattern is clear: Amazon is pricing the behaviour it wants. Ship to more destinations or through its own inbound programs and placement is cheaper. Keep healthy stock cover and the low-inventory fee disappears. The fee stack is a set of decisions, not a fixed cost.

The reconciliation nobody enjoys

Settlement reports carry every fee line per order. Read against expected fees per SKU they reveal mis-measured dimensions, wrong size tiers, storage that should have been cleared, and returns processed at a rate that no longer matches the category. Nobody enjoys this reading. It is where the recoverable money is.

The habit that matters is comparing actual to expected every week, not once a quarter, because disputes have windows too.

Margin floors per SKU, kept current

Every price decision rests on a floor, and the floor is only as good as the fee stack behind it. A floor built on last year's fees will win Buy Boxes you should not want. In the accounts we run, floors are recalculated per SKU and marketplace whenever a fee changes, and the pricing logic reads the current floor, not a spreadsheet from January.

This is where fees and pricing stop being two departments.

What we do about it

Our technology monitors fees per SKU against expectation, flags anomalies the day they land, drafts the dispute or the placement change, and keeps the floors current. The operator decides which fights are worth having and which product needs a different inbound plan. Every decision is logged, so the next quarter starts with fewer surprises than the last.

Enabled by AI means the reading happens every day. It still takes a person to say no to a fee.

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