Amazon FBA bookkeeping in 2026: a complete guide using Xero & A2X

Amazon FBA accounting breaks most generalist bookkeepers. The settlement reports look like a foreign language, the fees are buried in fourteen different categories, and by the time you've figured out where one month's payout came from, the next one has landed. This guide walks through the workflow we use across dozens of Amazon sellers — from connecting A2X to closing the month with confidence.

Why Amazon FBA accounting is different

If you've come to Amazon from running a normal high-street business, the first month of FBA bookkeeping feels like someone replaced your bank statement with a logic puzzle. You don't get clean per-sale records hitting your bank account. Instead, you get a fortnightly (or sometimes more frequent) payout — a single bundled amount that represents thousands of orders, refunds, FBA fulfilment fees, storage charges, advertising costs, sales tax, and currency conversions, all netted off against each other.

That bundled payout is the only thing your bank sees. If you reconcile it as a single line of "Amazon sales", you've technically made the books balance — but you've thrown away every piece of useful financial information. Your gross sales, your fee structure, your refund rate, your advertising ROAS — all invisible.

The job of proper FBA bookkeeping is to break that bundled payout back apart, post each component to the right account, and end up with a P&L that actually reflects what's happening in your business.

The toolkit: what you actually need

For 95% of FBA sellers, the right stack looks like this:

• Xero or QuickBooks Online as the core accounting platform. Either works well for FBA. We tend to recommend Xero for sellers in the UK, EU, Australia, and New Zealand, and QuickBooks Online for sellers primarily in the US — though both are valid choices.
• A2X as the integration between Amazon and your accounting software. A2X reads each Amazon settlement report, breaks it apart into the individual revenue, fee, refund, and tax categories, and posts a clean summary journal to your accounting software for each settlement period. A2X plans start from roughly £19–£39 per month depending on your order volume — typically less than the time cost of doing this work manually.
• A live bank feed from your business bank account into your accounting software, so the actual payout from Amazon arrives as a transaction you can match.
• An inventory tracking method for cost of goods sold — either built-in inventory in Xero/QBO for simple cases, or a dedicated tool like DEAR (now Cin7 Core) for sellers managing multiple SKUs and warehouses. We help sellers set up inventory tracking properly as part of our setup work.

Some sellers ask whether they need both A2X and the native Amazon-Xero connection. The answer is no — A2X replaces it and does a much better job. The native connection tends to dump too much detail and creates a reconciliation mess.

Disclosure: we are A2X Certified for Accountants and Bookkeepers. We recommend A2X because we use it across the majority of our ecommerce engagements and have seen it consistently outperform alternatives — but the certification does not affect what we recommend, and we do not earn commissions from A2X subscriptions.

Setting up the chart of accounts for FBA

Before you connect any tools, your chart of accounts needs to be set up to receive the data A2X is going to send. Out of the box, Xero or QuickBooks doesn't have categories like "Amazon FBA Fulfilment Fee" or "Amazon Storage Fee" — you need to create them.

Here's the structure we typically build:

Revenue accounts

• Amazon Sales — Domestic
• Amazon Sales — International (if you sell on multiple Amazon marketplaces)
• Amazon Sales — Refunds (contra-revenue, sits as a reduction)
• Amazon Promotional Rebates

Cost of goods sold

• COGS — Products (the cost of inventory sold)
• Amazon FBA Fulfilment Fees
• Amazon Referral Fees (the percentage Amazon takes on each sale)
• Amazon FBA Storage Fees
• Amazon FBA Long-Term Storage Fees
• Amazon Inbound Placement Service Fees
• Amazon Low-Inventory-Level Fees
• Amazon Removal/Disposal Fees

Operating expenses

• Amazon Advertising (PPC)
• Amazon Subscription Fees (Professional seller account, software subscriptions)
• Amazon Other Fees (catch-all for less common charges)

Balance sheet accounts

• Inventory Asset (where your unsold FBA stock sits)
• Sales Tax/VAT Collected (a liability — this is money you owe to tax authorities, not your revenue)
• Amazon Reserves (Amazon often holds back funds — these need their own account so you can track what's actually yours vs what Amazon is holding)

Whether the FBA fees go in COGS or Operating Expenses is a judgement call — many accountants put them in COGS because they're directly tied to fulfilling sales, which gives you a more accurate gross margin. Others prefer them as Operating Expenses to keep COGS strictly product-related. Either is defensible, but pick one approach and stay consistent.

Connecting A2X — the practical steps

A2X has a free 14-day trial, which is usually enough to get a feel for how it handles your specific seller setup. Here's the rough flow:

1. Sign up for A2X at a2xaccounting.com and choose the right plan based on your monthly Amazon order volume. Don't accidentally sign up for the Shopify version if you're an Amazon seller.
2. Connect your Amazon Seller Central account to A2X. This is OAuth-based, so you log into Amazon and authorize A2X to read your settlement data. A2X never sees your password.
3. Connect your Xero or QuickBooks account to A2X. Same OAuth process.
4. Map the A2X categories to your chart of accounts. This is the critical step. A2X has dozens of pre-defined categories (FBA Fulfilment Fee, FBA Storage Fee, Sales, Refunds, etc.) and you need to tell it which account in your chart of accounts each one should post to.
5. Set up tax rates. If you're VAT-registered or charging sales tax, you need to map A2X's tax categories to the right Xero/QBO tax rates. Get this wrong and your VAT return will be a nightmare.
6. Run a test sync on the most recent settlement. Review the journal A2X creates before approving it.

The mapping step is where most setups go wrong. The default mappings A2X suggests are reasonable starting points, but they're not always right for your specific business. Spend an hour getting these right at the start — it saves dozens of hours of correction later.

The monthly reconciliation workflow

Once A2X is set up, the recurring monthly workflow is genuinely simple — usually 30–60 minutes per month for a typical FBA seller. Here's the sequence:

1. Review and approve settlements in A2X

A2X shows you each Amazon settlement as it lands. You review the breakdown, check the totals look right, and click "Send to Xero" (or QuickBooks). The journal entry posts immediately.

2. Match the bank deposit to the A2X journal

The actual cash payout from Amazon hits your bank, your bank feed picks it up, and you match it against the A2X-generated journal in Xero. The amounts should match to the penny. If they don't, something's wrong — usually a foreign exchange issue or a partial settlement.

3. Reconcile inventory

This is the step most sellers skip, and it's the one that ruins year-end accounts. At the end of each month, you need to check how much inventory you actually have (in FBA warehouses and any third-party storage) and adjust your inventory asset account to match. The cost of items sold becomes COGS for the month.

4. Review the P&L for the month

Open the profit & loss report. Does the gross margin look sensible? Are FBA fees roughly the percentage you'd expect (typically 15–35% of revenue)? Is advertising in line with budget? This monthly review is where you actually learn things about your business — without it, you're just doing data entry.

5. Set aside tax

If you're VAT-registered or owe sales tax, the cash that's sitting in your business bank from this month's profit isn't all yours. Move the relevant percentage into a separate tax-savings account so you don't get caught short at the next return.

Multi-currency and international FBA

If you sell on multiple Amazon marketplaces — say Amazon UK, Amazon DE, and Amazon US — your bookkeeping complexity multiplies. Each marketplace settles in its own currency. Amazon converts at their internal exchange rate, which we've observed to be 1.5–3.5% off mid-market depending on the currency pair. You receive the converted amount in your home currency.

The right approach is usually:

• Set up one A2X account per marketplace, each connected to the relevant Amazon Seller Central account.
• Enable multi-currency in Xero (or QuickBooks Plus / Advanced). This lets each marketplace post its sales and fees in the original currency, with Xero handling the FX conversion.
• Use Wise (or a similar multi-currency banking provider) so you can hold balances in USD, EUR, and GBP separately. This dramatically reduces the FX losses Amazon would otherwise extract on every settlement.
• Track FX gains and losses separately so they're visible on the P&L, not buried inside revenue.

Multi-currency FBA is genuinely complex and an area where we've seen even experienced bookkeepers make mistakes. If your international sales are more than a small percentage of total revenue, this is worth getting professional help with.

Common mistakes — and how to avoid them

Treating gross sales as revenue

The single biggest FBA bookkeeping error: confusing gross sales with what actually arrives in your bank. If you sold £20,000 of products on Amazon last month and £14,000 hit your bank, your revenue is £20,000 — but you also need to record £6,000 of fees and refunds as separate line items. Otherwise you'll either overstate revenue (if you record £20k as revenue without the offsetting fees) or understate it (if you only record the £14k that hit the bank).

Mixing personal and business cash

Amazon will happily pay out to a personal bank account. Don't let it. Open a dedicated business bank account before your first FBA settlement. The cost of unwinding mixed personal/business transactions later is staggering.

Ignoring inventory until year-end

Inventory in FBA warehouses is your asset — it's not COGS until it's sold. If you treat every product purchase as an immediate expense, your monthly P&L is meaningless. Track inventory properly from month one.

Forgetting about VAT thresholds and sales tax

UK FBA sellers can hit the £90,000 VAT registration threshold faster than they realize, especially if they're selling cross-border into the EU. Once you're VAT-registered and selling B2C across EU borders, you also need to consider the One-Stop Shop scheme (OSS — the EU's simplified cross-border VAT reporting system that replaced the old country-by-country distance-selling thresholds). The rules changed significantly post-Brexit and many sellers are still operating under outdated assumptions.

For US sellers, the picture is different but no less complex. Amazon now collects and remits sales tax automatically in most US states under marketplace facilitator laws, but you still need to track nexus, file information returns, and reconcile what Amazon collected vs what was actually owed. If you're an international seller using FBA US, you may also have US tax filing obligations even without a US business entity. None of this is something to leave until year-end.

Not reconciling Amazon's "reserves"

Amazon often holds back a portion of your settlement as a "reserve" — money you've earned but Amazon hasn't released yet. This needs its own balance sheet account. Many sellers don't track this, and end up with their cash position permanently understated by several thousand pounds.

When DIY makes sense, and when it doesn't

Here's an honest take. If you're a brand-new FBA seller doing under £2,000–£3,000 per month and you have time on your hands, DIY bookkeeping with Xero + A2X is a perfectly reasonable place to start. You'll learn how the numbers work, which makes you a smarter business owner long-term. The free A2X trial plus a Starter Xero subscription gets you going for under £30/month.

Once you're consistently above £5,000–£10,000/month, the time cost of DIY usually exceeds what it would cost to outsource. More importantly, mistakes get expensive. A mis-mapped tax category at £80,000/year of revenue can mean tens of thousands in incorrect VAT returns. At that point, working with a bookkeeper who actually understands FBA — not just one who's heard of it — pays for itself many times over.

Here's a rough decision framework based on what we see across the sellers we work with:

These are rough guidelines, not hard rules. A £5k/month seller with five SKUs is much simpler than a £4k/month seller selling on three marketplaces with 200 SKUs and FBA + FBM mixed fulfilment (FBA = Amazon stores and ships your stock; FBM = you handle storage and shipping yourself). Complexity matters as much as volume.

Setup checklist

If you've made it this far, here's a condensed checklist for getting your FBA books set up properly:

• Open a dedicated business bank account (separate from personal)
• Choose your accounting platform — Xero or QuickBooks Online
• Build a chart of accounts that matches the categories above (revenue, COGS, FBA fees broken out, balance sheet items)
• Sign up for A2X and connect both Amazon and your accounting software
• Map every A2X category to the right account in your chart of accounts — spend an hour on this
• Set up multi-currency in your accounting platform if you sell on multiple marketplaces
• Open a Wise (or similar) multi-currency account if international
• Decide on an inventory tracking approach and set it up
• Run your first sync, review the journal output, post it
• Match the actual Amazon bank deposit against the A2X journal in your accounting platform
• Schedule a recurring monthly review (calendar block: 60 minutes)

Final thoughts

Amazon FBA bookkeeping isn't black magic, but it does require a specific setup that most generalist accountants haven't learned. The right toolkit is small (Xero or QuickBooks + A2X + a multi-currency bank), the right chart of accounts is straightforward, and the monthly workflow is genuinely manageable once it's running.

The hardest part is the initial setup — getting the chart of accounts right, mapping A2X categories properly, and choosing whether to expense FBA fees through COGS or operating expenses. Get those decisions right at the start, and the next year of FBA bookkeeping becomes a quiet 45 minutes per month rather than a frantic three weeks at year-end.

Md. Nasir Uddin FCA

Fellow Chartered Accountant. First & only Silver Xero Champion from Bangladesh. Ex-KPMG. 300+ small business bookkeeping projects since 2015 across Amazon, Shopify, AirBnB, and beyond.

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