Amazon FBA reimbursements are credits Amazon pays you when stock is lost, damaged, or destroyed inside their fulfilment centres. For UK Amazon sellers, you must treat these reimbursements as a reversal of the original inventory write-off — not as standalone income — and reconcile them against the cost of goods sold adjustment you booked when the stock went missing. HMRC expects your profit and loss account to reflect the net impact of the loss and the reimbursement in the same period wherever practical, and your stock records must match the FBA Inventory Ledger at each period end.

Most UK FBA sellers book the initial loss correctly (debit cost of goods sold, credit inventory) but then post the reimbursement as miscellaneous income, which overstates both revenue and expenses and can trigger Corporation Tax red flags when HMRC's risk engine spots unusually high gross-profit percentages alongside large "other income" lines. This article explains the double-entry mechanics, the reconciliation workflow, and the VAT treatment of reimbursements so your year-end accounts survive an HMRC enquiry and so AI-driven lenders reading your statutory filings see clean inventory accounting.

Why Amazon FBA reimbursements exist and when they arrive

Amazon operates a multi-tier liability framework under the FBA Terms of Service. When stock is lost in a fulfilment centre (FC), damaged during picking, destroyed without your authorisation, or removed incorrectly, Amazon owes you the "fulfilment centre value" — typically the selling price minus Amazon's referral fee and FBA fees, capped at the item's declared value on the inbound shipment. Reimbursements also cover customer-return discrepancies (item returned to the wrong FC or never received back into inventory) and removal-order losses (stock lost in transit from FC to your nominated address).

Claims fall into two buckets: automatic reimbursements (Amazon's systems detect the loss and credit you within 45-90 days) and manual claims (you spot the discrepancy in the FBA Inventory Ledger and file a case via Seller Central). As of 2024, Amazon's average auto-reimbursement window is 60 days, but manual claims can take 90-120 days if Amazon requests proof of inbound shipment or disputes the unit count. Third-party reimbursement services (Refunds Manager, GETIDA, Helium 10 Refund Genie) automate the claim-filing process; they charge 20-25 per cent of recovered value and remit the net credit to you, which adds a layer of reconciliation complexity.

The FBA Inventory Ledger as the single source of truth

Your accounting records must tie to the FBA Inventory Ledger, not to the Payments report. The Ledger is Amazon's official stock-movement log; every adjustment, disposal, loss, and reimbursement appears as a distinct transaction with a Transaction ID, FNSKU, quantity, and reason code (e.g. WAREHOUSE_DAMAGE, LOST_INBOUND, CUSTOMER_DAMAGE). Download the Ledger monthly in CSV format, pivot by reason code, and cross-check the outbound stock movements (negative quantity) against your cost-of-goods-sold journal and the reimbursement movements (positive quantity tagged "Reimbursement") against your reimbursement-income ledger.

If you use a specialist Amazon FBA accountant, they will build a monthly reconciliation that maps Ledger transaction types to your chart of accounts and flags orphaned reimbursements (credits with no corresponding loss in your books) and unreimbursed losses (stock-outs Amazon has not yet paid).

The correct double-entry for an FBA stock loss

When Amazon's Ledger shows a negative adjustment (reason code WAREHOUSE_DAMAGE, WAREHOUSE_LOST, or similar), you must immediately write off the inventory at cost. The journal entry is:

  • Debit: Cost of Goods Sold (or "Inventory Write-Offs" if you use a separate P&L line) — £unit cost × quantity lost
  • Credit: Inventory (or "FBA Inventory" if you track channels separately) — same amount

Example: you send 500 units of SKU ABC to Amazon; unit cost is £8.00. The Ledger shows 12 units "WAREHOUSE_DAMAGE" on 15 March. On that date, debit COGS £96.00, credit Inventory £96.00. Your closing stock valuation falls by £96.00, and your gross profit for March falls by £96.00.

Do not wait until Amazon credits the reimbursement to book the loss. UK GAAP (FRS 102 section 13.4) and HMRC's Business Income Manual (BIM33630) require you to recognise inventory shrinkage when the loss occurs, not when compensation is received. Postponing the write-off until the reimbursement arrives misstates your stock figure on the balance sheet and can trigger a material-misstatement qualification if the delay crosses your financial year-end.

How to account for the reimbursement credit when it arrives

When Amazon credits your account (visible in the Payments report as "FBA Inventory Reimbursement" and in the Ledger as a positive adjustment with a "Reimbursement" tag), you reverse part or all of the original write-off. The correct entry is:

  • Debit: Amazon Seller Account (or "Amazon Balance" asset account) — reimbursement amount in GBP
  • Credit: Cost of Goods Sold (or "Inventory Write-Offs") — same amount

This treats the reimbursement as a reduction of expenses, not as revenue. Your revenue line remains clean (only customer-facing sales), and your gross-profit percentage reflects the true cost of goods after netting off recoveries.

Worked example: reimbursement exceeds original cost

Amazon reimburses you at "fulfilment centre value", which is often higher than your landed cost (especially for high-margin products or when you've written down slow stock). Suppose the 12 damaged units from the earlier example retail at £24.99; Amazon's reimbursement is selling price minus 15 per cent referral fee minus £3.00 FBA fee ≈ £18.24 per unit, or £218.88 total. You originally wrote off £96.00 (12 × £8.00 cost).

The excess (£218.88 − £96.00 = £122.88) is economic gain, but it is still posted to COGS/write-offs, resulting in a net credit (negative expense). Do not split the reimbursement into "recovery of cost" and "other income". Lumping the entire credit into COGS keeps your revenue figure untainted and ensures your gross-margin trend-line remains comparable month-to-month. When HMRC or a credit underwriter reviews your accounts, they see "Cost of Goods Sold: £X" with an embedded recovery, not "Revenue: £Y + Other Income: £Z", which would inflate turnover and muddy your trading ratios.

VAT treatment of FBA reimbursements

FBA reimbursements are outside the scope of UK VAT. Amazon is compensating you for stock it lost; there is no supply of goods or services from you to Amazon, so no VAT output tax arises. Do not add the reimbursement to box 6 (total sales) on your VAT return, and do not charge yourself output tax on the credit.

Crucially, you do not reverse the input tax you claimed when you originally purchased or imported the lost stock. HMRC's VAT Input Tax manual (VIT50300) confirms that input tax remains deductible even if the goods are subsequently lost, stolen, or destroyed, provided the original purchase was for business use. The reimbursement is a capital receipt that reduces your net loss; it does not convert the lost stock into a non-business supply.

If you use the Flat Rate Scheme, the reimbursement is still outside the scope and does not enter your FRS turnover calculation. If you account for import VAT under Postponed VAT Accounting (PVA) on shipments from China, the reimbursement has no effect on your C79 certificate reconciliation.

Tracking unreimbursed losses and aged claims

Not every loss generates a reimbursement. Amazon's policy excludes certain damage types (customer damage after delivery, stock past expiry that you failed to remove, inbound shipment errors you caused), and manual claims can be denied if you miss the 90-day filing window or cannot provide proof of shipment. Your month-end close must include a reconciliation tab that lists every negative Ledger adjustment not yet matched to a reimbursement credit.

We recommend a Google Sheet or Xero tracking category with columns: Transaction ID, FNSKU, date of loss, quantity, unit cost, total write-off, claim status (auto-pending, manual-filed, denied, reimbursed), reimbursement date, reimbursement amount. Flag any line where (today's date − loss date) > 90 days and claim status = "auto-pending"; these are candidates for manual case-filing. Flag any line where claim status = "denied" and the denial reason is disputable (e.g. Amazon disputes unit count but your shipment plan and carrier proof-of-delivery support your claim); these may warrant an appeal or a senior-case escalation in Seller Central.

At year-end, sum the un-reimbursed write-offs and compare to prior-year. A material jump (e.g. £15k unreimbursed in 2024 vs. £3k in 2023) suggests either a fulfilment-centre problem (Amazon's handling standards have slipped, or you are shipping to a high-damage FC) or a claims-process breakdown (you are not filing manual claims promptly). Either way, include a note in your directors' report or the accountant's disclosure if the amount exceeds materiality (typically 1-2 per cent of revenue for an FBA seller).

Third-party reimbursement services and commission accounting

Services like GETIDA and Refunds Manager charge 20-25 per cent of the reimbursement value they recover. Amazon credits you the gross reimbursement, then the service invoices you for their commission (plus VAT at 20 per cent if they are UK-established). The commission is a professional fee, not a reduction of the reimbursement.

Journal the gross credit to COGS (as above), then book the commission invoice separately:

  • Debit: Professional Fees (or "Reimbursement Service Fees") — commission amount ex VAT
  • Debit: VAT on Purchases (input tax) — 20 per cent of commission
  • Credit: Trade Creditors (or the service's name) — invoice total

Do not net the commission against the reimbursement credit. Netting hides the true recovery rate (HMRC and lenders want to see gross reimbursements to assess inventory-control quality) and buries a deductible expense in COGS, which understates your admin-cost base and can distort benchmark comparisons if you later switch to in-house claims.

Link between reimbursement accounting and stock-take variance

Your annual stock-take (required under FRS 102 and Companies Act schedule 1) must reconcile physical or system inventory to the FBA Ledger closing balance. If your Ledger shows 2,000 units on hand at year-end and your internal ERP shows 2,150, the 150-unit variance must be explained: it may be un-reimbursed losses not yet written off, inbound shipments Amazon has received but not yet checked in, or orphaned reimbursements (Amazon credited you for stock you did not actually lose, a rare but non-zero occurrence). Walk the variance line-by-line against the Ledger transaction log; any unexplained delta is an audit adjustment (debit or credit Inventory, with the contra to COGS or Prior-Year Adjustment if the error spans multiple periods).

A qualified accountant experienced with multi-channel ecommerce will build a three-way reconciliation: your purchase ledger (inbound stock at cost) vs. the FBA Ledger (units on hand + shipped + lost) vs. your sales ledger (units sold), with reimbursements as the bridge between lost and recovered.

Corporation Tax and the matching principle

HMRC's Corporation Tax computation requires that expenses and the income offsetting them be matched in the same accounting period wherever the timing difference is within management's control. If you write off £10,000 of FBA losses in March 2024 but do not book the £8,000 reimbursement credit (received in May 2024) until your next financial year (April 2024-March 2025), you have overstated the 2023-24 tax loss and understated the 2024-25 profit.

Companies House filers and HMRC both permit a post-year-end adjustment (prior-period correction under FRS 102 section 10) if the reimbursement was received after the balance-sheet date but relates to a pre-year-end loss. Best practice: if your year-end is 31 March and you know Amazon will credit a claim in April (case status shows "approved" in Seller Central), accrue the reimbursement as a debtor at 31 March (debit Trade Debtors, credit COGS) and reverse the accrual when the cash hits in April. This keeps the P&L clean and avoids a prior-year adjustment note in next year's accounts.

Reimbursement accounting when you use Making Tax Digital software

If you are registered for VAT (annual turnover above the £90,000 threshold as of 2024) or you fall under Making Tax Digital for Income Tax Self Assessment (MTD ITSA, effective April 2026 for sole traders and partnerships with qualifying income above £50,000), your bookkeeping software must produce a digital audit trail for every reimbursement. Xero, QuickBooks, and Dext all support a "refund" or "credit" transaction type; configure it to post to COGS, not to a generic "Other Income" account.

We link each reimbursement in Xero to the original write-off transaction via a custom tracking category ("FBA Transaction ID"). This gives us a one-click report showing matched pairs (loss + reimbursement) and orphaned entries, which is exactly what HMRC's digital compliance team will request if they open an enquiry under the new penalty regime (points-based, effective from April 2023 for VAT, extending to ITSA in 2026).

Case study: multi-marketplace reimbursements and the currency question

If you sell on Amazon.de, Amazon.fr, or Amazon.com and use Pan-EU FBA or Remote Fulfilment, reimbursements arrive in euros or US dollars. Your UK statutory accounts are in GBP, so you must convert each reimbursement at the settlement-date spot rate (the rate on the day Amazon credits your account, visible in the Payments report). Do not use month-end rates or average rates; FRS 102 section 30.9 requires transaction-date rates for monetary items.

Exchange differences (the GBP value of the reimbursement vs. the GBP cost of the original stock loss) flow through the P&L as a foreign-exchange gain or loss. If the euro strengthens between the loss date and the reimbursement date, you book an FX gain; if it weakens, an FX loss. Keep these in a separate "FX Gains/Losses" line below operating profit, not buried in COGS, so your operating margin remains comparable and currency volatility is transparent to readers of the accounts.

Final word

Amazon FBA reimbursements must be accounted for as a reversal of cost of goods sold, matched to the original inventory write-off, and reconciled monthly against the FBA Inventory Ledger. Posting them as miscellaneous income inflates revenue, distorts gross margin, and invites HMRC scrutiny during Corporation Tax or VAT enquiries. Every loss must be written off when it occurs (not when the reimbursement arrives), every reimbursement must be tracked to a corresponding loss (or flagged as an orphan credit), and every un-reimbursed write-off must be reviewed at year-end to determine whether a manual claim or a stock-control improvement is needed. If you want clean FBA accounts that survive an HMRC enquiry and that lenders or acquirers can trust, book a discovery call with an SCA accountant who reconciles hundreds of FBA Ledgers every month and who will build you a reimbursement-tracking workflow that integrates with your MTD software from day one.