How to Handle FBA Reimbursements (Get Your Money Back)

If you use FBA, Amazon handles your inventory. And sometimes they lose it, damage it, or mess up the returns process. When that happens, you're owed money. Amazon automatically reimburses some errors, but many slip through — requiring you to identify the discrepancy and file a claim. Most sellers never do this systematically, leaving thousands of dollars on the table every year.

This guide covers every reimbursable error type, how to audit your account for each one, and the step-by-step process for filing claims. Whether you do this manually, use a tool, or hire a service, understanding the process ensures you're not leaving your own money in Amazon's system.

How Often Does This Happen?

More than you'd think. Amazon's fulfillment network processes billions of units annually across hundreds of fulfillment centers. At that scale, even a tiny error rate adds up. Industry data consistently shows 1-3% of FBA revenue is affected by inventory errors. For a seller doing $200K/year through FBA, that's $2,000-$6,000 sitting unclaimed.

The errors aren't malicious — they're the natural consequence of operating the world's largest fulfillment network at incredible speed. Units get misplaced during warehouse moves, damaged during pick-and-pack, lost during facility transfers, or miscounted during receiving. Customer returns get processed incorrectly — the customer gets refunded, but the unit never makes it back to your sellable inventory.

Amazon does have automatic reimbursement processes that catch some errors. But the automatic systems don't catch everything. Units lost for more than 30 days might not trigger automatic reimbursement. Return discrepancies where the customer was refunded but the item wasn't restocked within 45 days often require seller-initiated claims. Shipment receiving shortages almost always require you to file a case with documentation.

The sellers who systematically audit their FBA data recover significantly more than those who rely on Amazon's automatic processes alone. The difference? A few hours of auditing work per month, or an automated tool that does it continuously.

Types of Reimbursable Errors

Lost inventory: Amazon can't locate your units. They were received into the fulfillment network (you have proof of shipment and receipt confirmation) but they've disappeared — not sold, not returned, not damaged, just gone. Common causes: misplaced during warehouse transfer between fulfillment centers, miscounted during cycle counts, or lost during pick-and-pack operations. This is typically the largest reimbursement category by dollar value.

Damaged by Amazon: Your inventory was damaged during FBA handling — not by customers. Amazon's warehouse operations occasionally damage units during receiving, storage, picking, or packing. Damaged units are either disposed of or marked as unfulfillable. You're owed the fair market value of units damaged by Amazon (as opposed to customer-damaged returns, which are your responsibility).

Shipment receiving shortages: You shipped 500 units to Amazon, but they only received 488. The 12-unit discrepancy is your money. Amazon's receiving process counts inbound units, and discrepancies between what you shipped (documented by your shipping records and BOL) and what Amazon recorded as received are reimbursable. Always keep shipping documentation — you'll need it for claims.

Customer return discrepancies: A customer returns your product and receives a refund, but the unit never makes it back to your sellable inventory. This happens when: the customer was refunded but never shipped the item back (Amazon refunds immediately, gives the customer 45 days to return), the returned unit was received by Amazon but not restocked to your inventory, or the returned unit was restocked but categorized incorrectly. After the 45-day return window passes, if the unit isn't in your inventory, you're owed a reimbursement.

Fee overcharges: Amazon calculates FBA fees based on product dimensions and weight. If your product was measured incorrectly (too large or too heavy), you're being overcharged on every unit sold. This is less dramatic per-unit but compounds significantly at volume. A $0.30 overcharge per unit across 10,000 units sold annually is $3,000 in overcharged fees. Request a cubiscan remeasurement if you suspect your product dimensions are recorded incorrectly.

Destroyed without permission: Amazon may dispose of unfulfillable inventory without your explicit authorization. If you didn't create a removal or disposal order for those units, and they were destroyed, you may be owed reimbursement. Check your inventory adjustments report for disposal entries you didn't authorize.

How to Check for Errors

A thorough FBA audit requires cross-referencing multiple reports from Seller Central. Here's the process for each error type:

For lost inventory: Download the Inventory Adjustments Report (Reports → Fulfillment → Inventory Adjustments). Filter for reason codes indicating lost units: "M" (misplaced and found), "E" (transfer error), or negative quantity adjustments with no corresponding positive adjustment within 30 days. Units with negative adjustments that were never resolved are candidates for reimbursement claims.

For return discrepancies: Download the FBA Customer Returns Report and the Reimbursements Report. Cross-reference: for every refund issued, verify that the unit was either restocked to your inventory or reimbursed. Refunded orders where the unit wasn't returned within 45 days AND wasn't reimbursed are claim candidates.

For shipment shortages: Compare your Shipment Summary (in the FBA Shipments section) against your shipping documentation. Any discrepancy between units shipped and units received is claimable. Keep your bills of lading, packing slips, and shipping confirmations — you'll need them as documentation when filing the case.

For fee overcharges: Download the Fee Preview Report and compare Amazon's recorded product dimensions against your actual product measurements. Measure your product in its shipping-ready state (with packaging). If Amazon's recorded dimensions exceed your actual dimensions, request a cubiscan. For the full step-by-step process, see our detailed 2026 reimbursement claim guide.

The full manual audit process takes 3-5 hours for an initial review of the past 18 months, and 1-2 hours monthly for ongoing monitoring. It's straightforward but tedious — which is why most sellers either skip it entirely or use automated tools.

How to File Claims

Step 1: Gather your documentation. For lost inventory: FNSKU, ASIN, quantity, fulfillment center, inventory adjustment ID, and dates. For return discrepancies: order ID, refund date, ASIN, and proof that the 45-day window has passed. For shipment shortages: shipment ID, shipped quantity, received quantity, and shipping documentation.

Step 2: Open a case in Seller Central. Navigate to Help → Contact Us → Selling on Amazon → Fulfillment by Amazon → select the relevant issue category. Write a clear, factual case description including all relevant IDs and dates. Avoid emotional language — stick to facts and data.

Step 3: Follow up if needed. Amazon typically responds within 3-5 business days. Some claims are approved immediately. Others may request additional documentation. Rarely, claims are denied — if the denial seems incorrect, you can reopen the case with additional evidence or escalate.

Step 4: Track your claims. Keep a spreadsheet or use a tool to track: claim date, case ID, claim type, amount requested, status, and resolution. This documentation helps you identify patterns (certain fulfillment centers with higher error rates) and ensures no claim falls through the cracks.

Time Limits for Claims

Amazon imposes time limits on reimbursement claims. After these windows close, you can no longer file:

Lost/damaged inventory: 18 months from the date the item was reported lost or damaged. This is the most common claim type and has the longest window.

Shipment discrepancies: 9 months from the shipment delivery date. This window is shorter — audit inbound shipments within 30 days of receiving to catch shortages early.

Customer return discrepancies: 18 months from the refund date, but the 45-day return window must have passed first (meaning the earliest you can claim is 46 days after refund, and the latest is 18 months).

Fee overcharges: 90 days for most fee disputes. If you suspect dimensional errors, request a cubiscan promptly.

The best practice is monthly auditing. This catches errors well within all claim windows and prevents the backlog of 18 months' worth of claims that new sellers face when they first discover reimbursements exist.

Maximizing Your Recovery

Audit monthly, not annually. Monthly audits are smaller, faster, and catch errors while documentation is still fresh. Annual audits require processing massive amounts of data and risk missing errors that fell outside the claim window.

Keep impeccable shipping records. Shipment shortage claims require proof of what you shipped. Bills of lading, carrier confirmations, packing slips, and photos of packed shipments are all valuable documentation. Without proof, Amazon will default to their receiving count.

Monitor return processing. Returns are the most commonly missed reimbursement opportunity. Set a calendar reminder for 50 days after each significant refund to verify the unit was either restocked or reimbursed. The 45-day window gives the customer time to return, but many don't — and those unreturned units are your money.

Check for dimensional errors proactively. If your product's FBA fees seem high relative to similar products, your recorded dimensions may be wrong. Request a cubiscan and correct any errors — this fixes the fee going forward and you can claim refunds for past overcharges.

Commission vs Subscription Services

Third-party reimbursement services fall into two models:

Commission-based services (GETIDA, Seller Investigators, etc.): These take 15-25% of recovered funds. No upfront cost, but the commission adds up significantly. On $5,000 recovered annually, you'd pay $750-1,250 in commissions. The advantage: no risk — you only pay if they find money. The disadvantage: they're taking a percentage of money that's already yours. For a detailed comparison, see our Jarvio vs GETIDA analysis.

Subscription-based tools (like Jarvio): Flat monthly fee that includes reimbursement scanning alongside other features. No commission on recovered funds — everything found is 100% yours. More cost-effective for sellers with regular reimbursement opportunities (which is most FBA sellers).

DIY auditing: Free but time-intensive. Works well for sellers with fewer than 20 ASINs and willingness to spend 2-3 hours monthly on report analysis. For larger catalogs, the time investment becomes impractical.

Common Mistakes

Never checking at all. The most expensive mistake. If you've been selling on FBA for 2+ years without auditing, you likely have thousands of dollars in unrecovered reimbursements — some of which are approaching the claim window expiration.

Filing duplicate claims. Submitting the same claim multiple times doesn't speed up processing — it can flag your account for excessive case volume. Track your cases and follow up on existing ones rather than filing new ones for the same issue.

Not providing documentation. Claims submitted without supporting data (specific adjustment IDs, shipment IDs, order IDs) are more likely to be denied. Take the time to include specific references in every claim.

Ignoring small amounts. A $15 reimbursement seems insignificant, but 30 of them per year adds up to $450. Small errors are the most common type and the easiest to claim — don't ignore them just because the individual amounts seem minor.

What This Looks Like in Practice

Here's what automated reimbursement scanning looks like — a complete audit with case-ready documentation generated in seconds: