Amazon Remeasured Your Product and Your FBA Fee Jumped: How to Get It Back

By Archit Mathur · Published 2026-08-07 · Last updated 2026-08-07

This is the single most common fee complaint on the Amazon seller forums, and it follows the same shape every time. Nothing about the product changed. The packaging is identical. But the fulfilment fee is suddenly higher, and it has been higher for weeks before anybody noticed.

Why Amazon re-measures your product

Amazon measures units as they move through the fulfilment network. It happens when a shipment is received, when a unit is handled during picking, and periodically as part of routine catalogue maintenance. The measurement equipment - commonly a Cubiscan - produces the length, width, height and weight that determine your size tier.

Size tier determines the fulfilment fee. So a measurement that reads a couple of centimetres larger than reality does not increase your fee slightly. It can move the product into an entirely different tier and change the fee by several dollars per unit, permanently, until someone corrects the record.

Measurement errors are routine rather than exceptional. A product measured standing rather than lying flat, a soft-sided package compressed differently, packaging that recovered its shape after being scanned - all produce a wrong number that Amazon then treats as fact.

Amazon does not tell you

There is no notification for this. No email, no banner in Seller Central, no entry in a feed. Amazon publishes no push notification for fee changes at all - it is one of the few account events with no subscription available through the Selling Partner API.

The practical consequence is that the only ways to catch it are to check your fee estimates for every ASIN manually and repeatedly, or to have something check them for you. Most sellers do neither, which is why the discovery usually happens during a settlement reconciliation weeks later.

Step 1: confirm it actually happened

Before opening a case, establish that the dimensions on file are wrong. Measure the product exactly as it ships - fully packed, in the orientation it is stored - and record length, width, height and weight. Then compare against what Amazon lists on the ASIN.

Two things make a strong case: your measured figures differ materially from Amazon's, and the fee changed on a specific date with no corresponding change from you. If you can name the date, you have removed the most common reason these cases stall.

What to record before you file

Step 2: request the remeasurement

Open a case in Seller Central asking for the unit to be re-measured, and include your own measurements. Ask explicitly for a Cubiscan remeasurement rather than a general review - it names the process the fulfilment centre actually runs and skips a round of clarification.

If the remeasurement confirms your figures, Amazon updates the catalogue record and the fee returns to the correct tier going forward. That fixes the future. It does not, on its own, return the money already taken.

Step 3: ask for the overcharge back

This is the step most sellers skip, and it is where the money is. Once the corrected dimensions are on file, open a follow-up request for reimbursement covering units fulfilled at the incorrect size tier, citing the date the fee changed and the number of units affected.

Expect templated replies. Forum threads on this topic routinely run to three or four rounds of responses that do not engage with the evidence before reaching someone who does. Sellers who recover the money are generally the ones who kept restating the same specific numbers rather than escalating in tone.

Fees move for other reasons too

Remeasurement is the most common cause but not the only one. Category reclassification changes your referral rate. Amazon's periodic rate updates change fulfilment costs across the board. A change to your own packaging changes the tier legitimately. Notifcentral monitors eight fee types - Referral, FBA Fulfillment, Pick & Pack, Weight Handling, Order Handling, Delivery Services, Variable Closing and Fixed Closing - and reports the before and after figures regardless of cause.

One category it cannot cover is storage fees. Monthly and long-term storage charges are not exposed through the fee-estimate data, so a storage overcharge will not raise an alert - worth knowing, because storage billing errors are their own recurring forum complaint.

Why speed is the whole game

A $1.49 per-unit increase on a product selling 600 units a month is $894 a month. Caught in a day, it is a case you file with exact numbers. Caught at quarter end, it is $2,682 gone, a vaguer claim, and a reconstruction exercise to work out when it started.

The mechanism that closes that gap is not more diligence. It is having the comparison run automatically, every few hours, on every ASIN, so the date the fee changed is recorded at the moment it changes rather than inferred afterwards.

Frequently asked questions