Module A · 0 / 3 checked
A · FBA Fee Check
Confirm your current referral, fulfillment, and surcharge math is what Seller Central is actually charging.
Amazon Conversion Hub · 2026
Amazon Fee Audit Checklist
Walk through 7 audit modules — FBA fees, dimensional weight, storage, shipping, stranded inventory, inventory discrepancy, and reimbursement opportunity — to find the hidden cost risks most Amazon sellers miss. Planning checklist only. Always verify the final numbers in Seller Central.
7-step fee audit
Tick each item you have already reviewed. The score updates as you go.
Module B · 0 / 3 checked
B · Dimensional Weight Check
Dimensional weight pushes many SKUs into a larger fee tier than the scale weight would suggest.
Module C · 0 / 3 checked
C · Storage / Aged Inventory Check
Storage rates increase during the October–December peak season, and aged inventory may add monthly surcharges after 181 days.
Module D · 0 / 3 checked
D · Shipping Cost Check
Inbound shipping, FBM, and MCF have different cost stacks. Pick the one that matches your decision.
Module E · 0 / 3 checked
E · Stranded Inventory Check
Stranded units still charge storage, and they may still be receiving ad spend.
Module F · 0 / 3 checked
F · Inventory Discrepancy Check
Discrepancies are the upstream event for many reimbursement claims.
Module G · 0 / 4 checked
G · Reimbursement Opportunity Check
Reimbursements time out. Schedule a review before the standard claim window closes.
What is an Amazon fee audit?
An Amazon fee audit is a structured, repeatable review of every fee Amazon charges your business. It covers the front-of-house costs most sellers track (referral fee, FBA fulfillment, storage) and the back-of-house costs most sellers miss (dimensional weight tier shifts, aged-inventory surcharges, stranded inventory carrying cost, inventory discrepancy, and unreviewed reimbursement events). The output is a planning checklist of potential issues plus a recommended next tool for each gap.
Why Amazon sellers miss hidden costs
Amazon's fee schedule changes often, and the report set is large. Sellers usually track the line items that show up on every settlement (referral, fulfillment) and treat the rest as noise. Over a year, the small leaks add up: a packaging tweak that pushes a SKU into a higher size tier, a quarter of aged inventory that crosses the 181-day surcharge line, a stranded ASIN that keeps paying storage while ads run on it, a refund that never reconciled to a return.
This checklist forces every leak to be either confirmed (you tick the box) or queued for a planning estimate (you open the linked calculator). It is not an official audit and it is not a Seller Central tool — it is a workflow.
What this checklist includes
- FBA fee review (referral, fulfillment, fuel and logistics surcharge)
- Dimensional weight and size-tier boundary check
- Storage and aged-inventory surcharge review (including Q4 peak rates)
- Inbound shipping cost per unit, plus FBA / FBM / MCF comparison
- Stranded inventory carrying cost and ad-spend check
- Inventory discrepancy across shipped, received, available, and disposed
- Reimbursement opportunity review across ledger, returns, and removals
What this checklist does not include
- It is not an official Amazon audit and does not contact Seller Central on your behalf.
- It does not guarantee a reimbursement or any specific savings figure.
- It does not use real-time Amazon data — every result is a planning estimate.
- It does not file claims. Filing a reimbursement requires Seller Central workflow or a third-party partner.
- It does not model SFP eligibility, account health, or listing policy risk. Those are separate workflows.
Which Seller Central reports to review
Each module of this checklist maps to one or more reports you should pull in Seller Central. Open them alongside the matching calculator so the inputs are grounded in real numbers.
Inventory LedgerModule G · Reimbursements
Customer ReturnsModule G · Reimbursements
ReimbursementsModule G · Reimbursements
Removal Order DetailModules F & G
Inventory AdjustmentsModule F · Discrepancy
Stranded InventoryModule E · Stranded
Inventory AgeModule C · Storage
FBA Fee PreviewModules A & B
Monthly Storage FeesModule C · Storage
How often to run an Amazon fee audit
For most sellers, a full 7-module audit once per quarter is enough. After any Amazon fee schedule change (referral, fulfillment, surcharge, peak season), run a quick spot check on the affected module. Sellers with large catalogs, fast turn, or seasonal swings benefit from a monthly review. Pair the audit with the reimbursement module every time so aged events are filed before the standard claim window closes.
Related Amazon calculators
Each module below opens the planning calculator that sizes the potential exposure for that gap.
Frequently asked questions
What is an Amazon fee audit?
An Amazon fee audit is a structured review of the fees Amazon charges your business across FBA fulfillment, referral, storage, shipping, stranded inventory, inventory discrepancy, and reimbursement events. The goal is to find the back-of-house costs most sellers miss, then run each finding through a planning calculator to estimate exposure and a recommended next step.
Can this checklist find guaranteed reimbursements?
No. This is a planning checklist that flags potential gaps. It is not an official audit, and it does not guarantee reimbursements. Whether Amazon owes you money depends on the actual events in your Inventory Ledger, Customer Returns, and Reimbursements reports, which you must verify in Seller Central.
Which Amazon fees should I review?
Review referral fees by category, FBA fulfillment fees by size tier, monthly storage rates including peak season, aged-inventory surcharges, fuel and logistics surcharges, inbound shipping cost per unit, and any accessorial fees such as residential delivery or oversize handling. The seven modules of this checklist cover each of these fee families.
How often should I audit FBA fees?
Run a full FBA fee audit at least once per quarter, and run a quick spot check after any Amazon fee schedule change. Sellers with large catalogs or seasonal swings benefit from a monthly review. Pair the audit with the FBA reimbursement review so that aged events are filed before the standard claim window closes.
What Seller Central reports should I check?
Open the Inventory Ledger, Customer Returns, Reimbursements, Removal, and Inventory Adjustments reports. Cross-check the Inventory Age report for storage and aged-inventory surcharge exposure, and the FBA Fee Preview for the current SKU-level fulfillment fee. Use this checklist as a workflow: each module maps to one or more of these reports.
Can I use this for multiple SKUs?
This single-page checklist works as a planning workflow for one SKU at a time. To audit multiple SKUs at once with saved history, CSV import, and downloadable reports, join the Pro waitlist. Pro is planned, not built yet, and we will only ship features that enough waitlist members ask for.