Amazon FBA Charges, Explained With a Worked Example

The Seven Charges Inside Every FBA Invoice

Sellers ask what FBA charges expecting a single number. It's never a single number. Your monthly FBA bill is a stack of separate charges, each with its own trigger and its own rate table, and most sellers only ever look at the total.

• Fulfillment fee — charged per unit sold. Covers picking, packing, shipping to the customer, and basic customer service. Driven by size tier and weight, not by price.
• Referral fee — Amazon's selling commission, not strictly an FBA charge, but it lands on the same statement and gets confused with the fulfillment fee constantly. It's a percentage of item price, set by category.
• Monthly storage fee — charged per cubic foot of space your inventory occupies, billed monthly, higher in October through December than the rest of the year.
• Aged inventory surcharge — added on top of storage once units have sat in a fulfillment center past a set number of days, currently 181.
• Returns processing fee — charged in categories where Amazon covers the customer's return shipping. It doesn't apply everywhere, which is exactly why it's the one sellers miss.
• Removal, disposal, or liquidation fee — a per-item charge if you tell Amazon to send inventory back, destroy it, or liquidate it instead of paying to keep storing it.
• Inbound placement fee — charged on shipments sent to a single fulfillment center rather than split across several yourself.

Amazon's own Revenue Calculator will price the first two for a specific ASIN. Nothing shows all seven stacked together against your actual catalog — that reconciliation is manual, or it's a job someone or something needs to own.

Does Amazon FBA Charge for Shipping?

Yes and no, depending which shipping you mean. There's no line item called a 'shipping charge' on an FBA order — the cost of moving the package from the fulfillment center to the customer's door is folded into the per-unit fulfillment fee. You don't pay a separate carrier rate on top of it.

Inbound shipping — getting your inventory to Amazon in the first place — is different, and it's on you. You pay a carrier, or use Amazon's Partnered Carrier program, to move product into a fulfillment center. Since Amazon introduced the inbound placement fee, you also make a choice: split each shipment across the fulfillment centers Amazon recommends yourself, or send everything to one location and let Amazon redistribute it for a per-unit fee. Neither option is free. One trades your labor and coordination for the charge; the other doesn't.

So the honest answer to 'does Amazon FBA charge shipping': not to the customer, directly and separately — but yes, in two other places most sellers don't think of as shipping until the invoice arrives.

A Worked Example: Reading Your Own Bill

Take a mid-size kitchen item — the kind of category where a brand like HexClad competes — one pound, standard size, no oversize surcharges. Here's how the charges stack, described by structure rather than a current rate card, because Amazon updates rates on its own schedule and any number quoted today reads wrong within months:

• Fulfillment fee: fixed for the size/weight tier, regardless of what the item sells for.
• Referral fee: a percentage of sale price, set by category — check the current category rate rather than assume it's the same across your catalog.
• Monthly storage: a per-cubic-foot rate, lower in off-peak months, several times higher in Q4 — multiply by how long the unit actually sits before it sells.
• Aged inventory surcharge: zero, until day 181, then it stacks on top of storage every month after.

Run the same product through 90 days versus 200 days in a fulfillment center and the margin difference isn't the referral fee — it's the storage line, because it compounds, and the aged surcharge doesn't forgive itself once a unit clears the threshold. That's the part sellers underestimate: FBA charges reward turnover, not the price you set.

The Mistakes That Cost Sellers Real Money

The most common misread is treating the referral fee as an FBA charge and disputing it as one. You can't dispute a referral fee for being 'too high' — it's Amazon's cut of the sale, set by category. The charges actually worth disputing are the ones based on Amazon's data about your product, because that data is sometimes wrong.

Dimensional-weight misclassification is the biggest one. Amazon measures and weighs your unit on receipt. If the recorded dimensions land it in a bigger size tier than the item actually occupies, every fulfillment fee on every unit of that ASIN is wrong until someone catches it and files a correction. We've seen this recur inside portfolios spanning more than $500M in managed revenue across 100+ brands, and it's never a one-time event — it comes back every time packaging or case-pack changes.

The second mistake is watching the storage total and missing the aged inventory line sitting right below it. They're billed separately, and a seller who only checks whether storage looks high this month will miss slow-moving units quietly crossing day 181. The fix isn't a bigger warning label from Amazon; it's someone checking inventory age on a schedule, not just when the invoice looks off.

When the Charge Is Wrong: What to Do

If a fulfillment or storage charge looks wrong, start with the dimensions, not the invoice. Pull the item's stored weight and dimensions from Seller Central and measure a unit yourself. If Amazon's figure is heavier or bigger than the real product, that's a correctable data error, not a rate dispute — fix the data and the fee corrects itself going forward.

For past charges — lost units, damaged inventory, fees on quantities that don't match what you shipped — file a reimbursement case with the shipment and unit numbers attached. Amazon runs these on a claims window, and it closes; check the current window in Seller Central rather than assume it matches last year, because it's moved before.

If a reimbursement still doesn't land after filing, the usual reason is a documentation gap — no proof of what actually shipped, so Amazon has nothing to compare its receiving record against. That's the argument for keeping shipment paperwork longer than you think you'll need it.

Where This Fits

Dr. Stock is a managed service, not a rate calculator — built by Fable 5, from Full Circle, to sit on top of an existing FBA account and work the problems above: dimensional-weight misclassification, aged-inventory decisions before the surcharge hits, and reimbursement claims for lost or damaged units, with purchasing decisions always going to a human regardless of settings. It doesn't store or ship anything itself — that stays with Amazon's fulfillment network, same as for every seller reading this. If the leak turns out to be in the ad account instead of the warehouse, that's a different problem — that's Dr. PPC's job, not Dr. Stock's.