Amazon FBA (Fulfillment by Amazon) is a powerful tool for sellers, but it comes with fees that can significantly impact profitability. Sometimes, Amazon miscalculates these fees due to incorrect product weight or dimensions, leading to fba fee overcharge. If you’re paying more than necessary, you may be eligible for a reimbursement.
This guide will explain why FBA overcharges happen, how to detect them, and how to get reimbursed.
1. What is an FBA Fee Overcharge?
FBA fulfillment fees are based on a product’s size and weight. If Amazon incorrectly classifies a product as larger or heavier than it actually is, you will be overcharged per unit.
For example:
- Your product actually weighs 8 oz but is incorrectly categorized as 1 lb
- Amazon charges you the 1 lb rate, leading to higher fulfillment fees on every sale
These small overcharges add up, costing sellers hundreds or thousands of dollars over time.
2. Why Do FBA Fee Overcharges Happen?
Amazon’s system occasionally makes errors in product classification. Common causes include:
A. Incorrect Product Measurements
- Amazon may mismeasure your product’s dimensions or weight, pushing it into a higher fee tier.
B. Packaging Changes
- If Amazon repackages your product in a larger box, they might use the wrong dimensions for fee calculations.
C. Category Misclassification
- Amazon may assign your product to an incorrect category, resulting in higher referral fees.
D. Fee Changes
- Amazon updates FBA fee structures annually. Sellers who don’t track these changes may continue paying outdated higher rates.
3. How to Identify FBA Fee Overcharges
To detect fee overcharges, sellers should regularly check their FBA Fees Report in Amazon Seller Central.
Step 1: Find Your FBA Fees Report
- Log in to Seller Central
- Go to Reports → Fulfillment
- Select Fee Preview Report
- Compare Amazon’s listed fees with the actual dimensions and weight of your product
Step 2: Check Your Product’s Current Size Tier
- Navigate to Manage Inventory
- Click on your product
- Check the dimensions and weight Amazon has assigned
- Compare these with your own product measurements
💡 Tip: If Amazon’s dimensions are incorrect, you are likely being overcharged.
Step 3: Compare Against Amazon’s FBA Fee Chart
Amazon provides updated FBA fulfillment fee charts annually. Check your product’s size tier and weight against the official chart.
Example (2024 Standard-Size Items):
WeightCorrect FeeOvercharged Fee (if Amazon miscalculates)6 oz$3.22$4.13 (if categorized as 12-16 oz)12 oz$3.72$5.42 (if classified as 1-2 lbs)2 lbs$5.42$6.20 (if categorized as 3 lbs)
🔎 If your product is in the wrong weight category, you are overpaying!
4. How to Request an FBA Fee Reimbursement
Step 1: Gather Evidence
- Take accurate product measurements using a scale and measuring tape
- Record a video showing your product’s actual weight and dimensions
- Take screenshots of Amazon’s incorrect listing information
Step 2: Open a Case in Seller Central
- Go to Seller Central → Help
- Click Contact Us
- Select FBA Issue → Incorrect Fees or Overcharges
- Provide:
- ASIN of the product
- Correct dimensions & weight
- Comparison of Amazon’s fee vs. correct fee
- Supporting photos/videos
Step 3: Follow Up
Amazon usually reviews cases within 7-14 days. If they verify an overcharge, they will reimburse past overpaid fees and update your product’s fee classification.
5. Preventing Future FBA Fee Overcharges
✔ Check FBA Fees Monthly – Use the Fee Preview Report to spot overcharges early
✔ Monitor Product Listings – Ensure Amazon’s recorded weight & dimensions match reality
✔ Use Reimbursement Tools – Automated tools like Seller Locker, Helium 10 Refund Genie, and AMZ Refund can help track FBA overcharges
✔ Track Amazon Fee Updates – Stay updated on Amazon’s annual fee structure changes
6. Final Thoughts
FBA fee overcharges can significantly reduce profit margins, but sellers who actively monitor their fees can reclaim lost revenue. By conducting regular fee audits, checking product size classifications, and filing reimbursement claims when necessary, you can ensure you’re not overpaying Amazon.