Amazon Quietly Changed How FBA Reimbursements Are Calculated

Now, the big shift is that Amazon can calculate many lost and damaged inventory reimbursements from source cost instead.

That means a claim that once felt like a real recovery can suddenly come back much smaller than expected.

Seller Investigators helps Amazon sellers audit FBA reimbursement issues, review missed claim opportunities, and manage the recovery process when Amazon’s own system does not catch everything.

What Changed In Amazon FBA Reimbursements?

The important change is simple.

For many FBA inventory reimbursement cases, Amazon now focuses on what it believes your product costs to source or manufacture.

That is very different from looking mainly at the retail price, the selling price, or the value you expected to recover from that unit.

Amazon announced the updated policy timing through Seller Central and pointed sellers toward the Manage Your Sourcing Cost page inside the Inventory Defect and Reimbursement portal.

You can review Amazon’s policy reference through the Amazon Seller Central FBA inventory reimbursement policy.

What Does Source Cost Mean?

Source cost is basically the cost Amazon uses to decide what your lost or damaged unit is worth for reimbursement purposes.

If you are a reseller, Amazon may expect purchase invoices or supplier proof.

If you manufacture your own product, the situation can get more complicated because your cost may include materials, production, packaging, labor, and other real inputs.

The problem is that Amazon may not automatically understand your real cost structure unless your data is clean, updated, and supported.

1. Resellers should keep supplier invoices, wholesale receipts, and purchase records organized.

2. Private label sellers should keep production invoices, factory records, and product-level cost data organized.

3. Manufacturers should document the real cost of producing the item as clearly as possible.

4. All sellers should compare Amazon’s reimbursement value against their own internal cost records.

Why Sellers Are Seeing Smaller Reimbursements

The drop happens because the reimbursement calculation is no longer trying to make the seller whole in the way many sellers expected.

If your product sells for $40 but Amazon values the source cost at $12, the reimbursement conversation starts from a much lower number.

That is why sellers can feel like they are getting 40 percent to 60 percent less per claim than they would have expected under the older mindset.

The reimbursement may cover part of the physical product cost, but it may not cover the full commercial damage to the business.

How To Update Or Dispute Source Cost In Seller Central

The practical move is to check the source cost Amazon has for your important SKUs before you need a reimbursement.

Waiting until a large claim is already underpaid puts you in a weaker position.

Inside Seller Central, sellers should look for the Inventory Defect and Reimbursement area and review the Manage Your Sourcing Cost workflow.

From there, compare Amazon’s value against your invoices, purchase records, and internal cost sheets.

1. Open the reimbursement or sourcing cost area in Seller Central.

2. Review Amazon’s estimated cost for each important SKU.

3. Compare that number with your real cost records.

4. Upload or submit support when Amazon’s value is wrong.

5. Recheck the reimbursement after Amazon responds.

Why Resellers And Manufacturers Feel This Change Differently

Resellers usually have cleaner proof because they can point to supplier invoices and wholesale purchase records.

Manufacturers and private label sellers may need to explain cost in a more detailed way.

If you make your own product, there may not be one simple invoice that shows the full cost of the final unit.

That is why documentation now matters more than it used to.

Why This Creates More Hidden Work For Sellers

This policy does not only reduce some reimbursement values.

It also adds another operational task that sellers need to manage.

You now need to watch inventory discrepancies, claim windows, reimbursement amounts, and source cost accuracy at the same time.

That is why reimbursement management is becoming less like a one-time case and more like an ongoing accounting habit.

1. Check if Amazon already reimbursed the issue.

2. Check whether the reimbursement amount looks too low.

3. Check whether Amazon used the right source cost.

4. Check whether you still have time to dispute or file.

5. Check whether your proof is strong enough before submitting.

What Sellers Should Check First

Start with the SKUs where a lower reimbursement would hurt the most.

High-volume products, high-cost products, and fragile products should move to the top of the review list.

A bad source cost on a slow-moving SKU is annoying.

A bad source cost on a best seller can quietly damage cash flow every time Amazon loses or damages units.

1. Top-selling SKUs with frequent FBA movement.

2. Products with high landed cost or expensive production.

3. Products with fragile packaging or damage risk.

4. Products often involved in inbound shipment discrepancies.

5. SKUs where Amazon’s estimated source cost looks obviously too low.

How Seller Investigators Fits Into This New Reimbursement Reality

Seller Investigators becomes useful when reimbursement tracking starts taking too much time away from running the business.

The service can audit your store, identify reimbursement opportunities, and help manage the claim process instead of making you manually chase every report.

That matters even more now because underpaid reimbursements and missed deadlines can both hurt your final recovery.

The goal is not to spam Amazon with weak cases.

The goal is to find valid recovery opportunities and support them with the right data.

Watch More Amazon FBA Reimbursement Videos

This policy change makes more sense when you understand the wider FBA reimbursement system.

The videos below continue the same topic and help sellers understand how reimbursement services, audits, and case management work.

Seller Investigators Amazon FBA Reimbursement Overview

This video gives you a broader look at Seller Investigators and how the reimbursement service works for Amazon sellers.

More Seller Investigators Reimbursement Training

This next video continues the training and gives you another angle on protecting cash flow from FBA reimbursement gaps.

Final Thoughts

The biggest lesson is that FBA reimbursements are no longer something sellers can treat casually.

If Amazon loses or damages your inventory, the amount you recover may depend heavily on the source cost data Amazon accepts.

That makes accurate documentation, fast checking, and regular reimbursement audits much more important.

You do not want to discover the problem only after Amazon pays a large claim at a much lower number than your real business cost.