Amazon FBA Fee Calculator

How Amazon FBA fees work, and why they decide your profit

FBA fees are not a footnote, they are often the largest single deduction from your sale, and they are governed by rules you can plan around.

When you sell through Fulfillment by Amazon, Amazon stores, picks, packs, and ships your product, and handles customer service and returns, in exchange for fees. For most sellers, the combined Amazon fees, referral plus fulfillment, take roughly a third of the selling price, which makes them one of the biggest factors in whether a product is profitable at all. Understanding how they are calculated turns them from a mysterious deduction into something you can anticipate and even optimize.

The referral fee: a cut of every sale

The referral fee is Amazon’s commission for the sale, charged as a percentage of the total price the customer pays. For the large majority of categories it is around 15%, though some categories differ. Because it scales with price, there is little you can do to reduce it other than choosing your category wisely, it is simply the cost of access to Amazon’s enormous customer base. What matters is remembering to subtract it before you celebrate a sale: on a $30 item, roughly $4.50 is gone to the referral fee before any other cost is counted.

The fulfillment fee: where size and weight rule

The FBA fulfillment fee is charged per unit and is determined almost entirely by the product’s dimensions and weight, which Amazon uses to assign it to a size tier. This is where smart sellers find real savings, because the tiers have thresholds, and a product that sits just over a boundary pays the higher tier’s fee for the sake of a fraction of an inch or an ounce. Reducing packaging bulk, choosing a lighter material, or shaving a product’s dimensions to drop into a cheaper tier can cut the per-unit fee meaningfully, and that saving repeats on every single unit you ever sell.

The calculator above estimates these fees for your product so you can see the combined Amazon take before you commit to a price or a product. For a seller importing from India, knowing this number early can change which products are worth importing at all.

The fees that hide beyond the obvious two

Beyond the referral and fulfillment fees sit several smaller charges that quietly erode margin if ignored: monthly storage fees that rise sharply in the last quarter of the year, long-term storage surcharges on inventory that lingers too long, returns processing fees in some categories, and removal or disposal fees for unsellable stock. None is large on its own, but together, and especially for a seller whose inventory turns slowly, they add up. Planning your inventory so stock does not sit idle in Amazon’s warehouses is the main defence, which is exactly why buffering stock in your own US warehouse and feeding FBA in batches saves money.

Seeing the full fee picture, not just the headline two, is what separates an accurate profit projection from an optimistic one.

Using fee estimates to choose better products

The most valuable use of an FBA fee estimate is before you import, not after. Running a candidate product through the fee math early tells you whether its likely selling price leaves enough room, after Amazon’s cut and your landed cost, to be worth the effort. Small, light, higher-priced products tend to have the friendliest fee-to-price ratios; large, heavy, cheap products often do not survive the fee math at all. Because we handle the freight, prep, and packaging that influence both your landed cost and your size tier, we can help you choose and engineer products that keep Amazon’s fees proportionate, so the fee structure works with your margin rather than against it.