Amazon Remeasured Your Product and Your FBA Fee Jumped: How to Get It Back
By Archit Mathur · Published · Last updated
Short answer
Amazon periodically re-measures and re-weighs products in its fulfilment centres. If the new measurement pushes your item into a higher size tier, the fulfilment fee rises immediately and Amazon sends no notification. You confirm it by comparing Amazon's recorded dimensions against the actual packed unit, then open a case requesting a Cubiscan remeasurement and reimbursement for units already overcharged.
This is the most common fee complaint on the Amazon seller forums, and it follows the same shape every time. Nothing about the product changed and the packaging is identical, but the fulfilment fee is suddenly higher, and it has been higher for weeks before anybody noticed.
Reported on the seller forums
One seller documented a fulfilment fee moving from $40.43 to $88.93 per order (opens in a new tab) after Amazon re-measured their product, a $48 overcharge across 29 orders, $1,392 in total. Amazon corrected the dimensions, conceding the original measurement was wrong, then declined the refund. The reason it gave, as the seller reproduced it: "The $88.93 fee was correctly calculated based on the (incorrect) measurements at that time." The seller's own summary of that position, that the incorrect fee was correctly calculated under the wrong dimensions, is the clearest statement of the problem anyone has written.
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. Sellers shipping in poly bags have reported the same failure repeatedly: air trapped in an unflattened bag reads as height (opens in a new tab), and height is frequently the dimension that decides the tier.
Amazon does not tell you
There is no notification for this. No email, no banner in Seller Central, no entry in a feed. The absence is structural rather than an oversight in your settings: Amazon's published list of Selling Partner API notification types (opens in a new tab) carries events for offer changes, listing status, pricing health, inventory and order changes, and none at all for a change to the fees you are charged. Nothing can subscribe to this, including us. A fee change is detectable only by re-reading the fee estimate and comparing it against the last one.
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 and 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
| Evidence | Why it matters |
|---|---|
| Your measured dimensions and weight | The claim rests on Amazon's record being wrong. Give the correct figures. |
| Amazon's currently recorded dimensions | Establishes the discrepancy in Amazon's own data. |
| The date the fee changed | Bounds the overcharge period. Without it, reimbursement is guesswork. |
| Old fee and new fee | Quantifies the per-unit difference. |
| Units fulfilled since that date | Turns a per-unit difference into the amount you are owed. |
| Photographs of the packed unit with a measure | Pre-empts the request for proof, which will come. |
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, since 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.
Measurement reviews are rationed
Measurement review requests are rationed. A seller managing over 3,000 SKUs described using a full monthly allotment of 40 requests (opens in a new tab) and being told by Support that no further reviews could be submitted that month. In their account roughly 40% of requests produced a genuine remeasurement and reimbursement; for the other 60% Amazon returned the same dimensions unchanged and closed the case, with no route to insist on a physical re-scan.
Two things follow. Spend the quota on the ASINs where the per-unit gap is largest rather than on whichever one you noticed first, and treat a repeated identical measurement as a likely re-read of the existing record rather than a fresh scan. Resubmit next month with photographs rather than accepting it as confirmation.
Step 3: ask for the overcharge back
This 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.
The honest caveat
Outcomes vary. Some sellers recover the full overcharge, some recover part, and some get nothing beyond the forward-looking correction. What is consistent is that nobody recovers anything on a fee change they never noticed.
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 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. 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.
Closing that gap means running the comparison on a schedule, on every ASIN, so the date the fee changed is recorded at the moment it changes rather than inferred afterwards.
Frequently asked questions
How do I know if Amazon remeasured my product?
The visible symptom is a fulfilment fee change with no change to your packaging. Compare the dimensions and weight Amazon lists on the ASIN against the actual packed unit. If Amazon's recorded values are larger than reality and the fee moved on the same date, a remeasurement is the most likely cause.
How do I request a Cubiscan remeasurement?
Open a case in Seller Central asking for the unit to be re-measured, and state the dimensions and weight you measured yourself. Amazon runs the product through a Cubiscan and updates the catalogue record if your figures are confirmed.
Will Amazon refund the fees I was overcharged?
Sometimes, and it is worth asking every time. Once corrected dimensions are on file, request reimbursement for units already fulfilled at the incorrect size tier, citing the date the fee changed. Sellers on the forums report mixed outcomes, and persistence past the first templated reply matters.
How long do I have to dispute an FBA fee overcharge?
Amazon does not publish a single universal deadline for fee disputes the way it does for inventory reimbursements, but the practical window closes as the transactions age out of the reporting period. The case is far easier to argue while the change is recent, which is the argument for catching it in hours rather than at quarter end.
Can a remeasurement ever work in my favour?
Yes. Remeasurements move fees in both directions, and a product reclassified into a smaller tier lowers your fulfilment cost. That is still worth knowing about, because it changes the price at which the ASIN clears its margin floor.
Sources
- 01Amazon made a measurement error, corrected it, but refuses to refund overcharged FBA fees (opens in a new tab) — Amazon Seller Forums, Seller_SwfeQrx6l2x7J, 3 April 2026
- 02FBA Fee Overcharge Due to Amazon Measurement Error (opens in a new tab) — Amazon Seller Forums, Seller_CX1ojXYVxYJeO, 23 June 2026
- 03Remeasurements on Cubiscan INCORRECT (opens in a new tab) — Amazon Seller Forums, Seller_8ttRhTiOvYWyV
- 04Notification Type Values (opens in a new tab) — Amazon Selling Partner API developer documentation
Get told automatically
Amazon does not notify sellers when an FBA fee changes. Notifcentral pulls your fee estimates from the Selling Partner API every six hours, compares each ASIN against its previous snapshot, and pushes an alert showing the old amount, the new amount, and the per-unit difference. It covers eight fee types across all your listings, with no ASIN limit.
How fba fee changes alerts work →notifcentral
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