The 5 Best Accounting Tools for Amazon FBA Sellers Right Now

There is no single best accounting tool for Amazon FBA sellers, because the tools solve two different problems and sellers arrive with one or the other. Some need a correct set of books with minimal effort. Others need to know which of four hundred products is quietly losing money. Below are five tools worth looking at in 2026, what each is for, and where each one runs out of road. Prices are as published on each vendor’s own site in August 2026.

1. A2X

Best for: sellers who need accurate books and do not need product-level detail.

A2X takes marketplace settlement data and produces summarized journal entries in your accounting system. That is the whole job, and it does it without asking you to move your inventory management anywhere.

Pricing on A2X’s own page starts at US$29 per month for Amazon, Shopify, Etsy, eBay, or PayPal individually, and US$79 per month for Walmart. Multi-channel plans run on a separate track. It connects to QuickBooks Online, Xero, and NetSuite, which makes it the only tool on this list with a documented NetSuite path.

Where it stops: A2X is not an inventory system. If your question is which SKU is unprofitable, A2X will give you clean books that cannot answer it. Sellers who want both end up running A2X plus something else, which means two systems with opinions about the same numbers.

2. Link My Books

Best for: sellers with UK or EU VAT exposure, or with channels outside the big five.

Link My Books occupies similar ground to A2X with two differences that matter. Its channel list, per its own pricing page, includes Amazon, Shopify, eBay, Etsy, Walmart, TikTok Shop, WooCommerce, and Square. And its tax handling is built around VAT, with HMRC VAT files attached to each entry and a guided setup wizard for sellers holding registrations across multiple EU countries.

It supports Xero across all regions and plans except Cashbook, plus QuickBooks. Its pricing page states that a paid plan allows historical settlement import going back up to 24 months depending on plan, with 90 days included during the free trial.

Where it stops: its accounting integrations are QuickBooks Online and Xero. If you are on QuickBooks Desktop or Enterprise, this one is out. And like A2X, it is a settlement and reporting tool rather than an inventory platform, so landed cost allocation across a container is not its job.

3. ConnectBooks

Best for: sellers whose problem is inventory and product margin rather than settlement mechanics.

ConnectBooks syncs Amazon, Shopify, Walmart, TikTok Shop, and eBay into QuickBooks Online, QuickBooks Desktop, QuickBooks Enterprise, and Xero, and carries the inventory layer alongside it: FIFO valuation, landed cost allocation, warehouse-level stock, restock forecasting based on sales history and velocity, and SKU-level profit and loss. Its pricing page lists Gold starting at $149 per month, Diamond at $199, and Platinum at $349, each quoted for one marketplace with pricing that adjusts by monthly order volume, plus a 30 day free trial. The company reports over 5,000 customers, and its founder and CEO is Nachman Lieser.

The QuickBooks Desktop and Enterprise support is the differentiator worth naming. A large number of established sellers never moved off desktop QuickBooks, and most tools in this category were built cloud-only. If that is you, the shortlist is short and this is on it, particularly for connecting Amazon data to QuickBooks Online or its desktop editions without a manual export step.

Where it stops: ConnectBooks states on its own pricing page that it does not currently provide an open API for external use, that stock is tracked by warehouse but not at bin or zone level, and that purchase orders can be created but only downloaded as PDFs rather than emailed to suppliers from the platform. It also does not list Etsy, WooCommerce, or Square among its channels, and it does not connect to NetSuite. Entry pricing is roughly five times A2X’s starting point, which is the correct trade only if you will actually use the inventory half.

4. QuickBooks Online

Best for: the ledger itself, which every other tool on this list writes into.

Worth listing separately because sellers routinely underbuy it and then discover the constraint six months later. Intuit’s US pricing page lists Simple Start at $38 per month, Essentials at $75, Plus at $115, and Advanced at $275. Inventory tracking, purchase orders, and project profitability begin at Plus. Simple Start and Essentials do not include inventory at all.

Simple Start covers one connected sales channel and Essentials covers three, per the same page. A multi-channel FBA seller on Essentials is already at the ceiling.

Where it stops: it will not take an Amazon settlement apart. That is what the first three tools are for. QuickBooks is the destination, not the pipeline.

5. Xero

Best for: sellers who want multi-currency and project costing bundled rather than bolted on.

Xero’s US pricing page lists Early at $25 per month, Growing at $55, and Established at $90. Established includes multi-currency, project time and costs, employee expense claims, and a 180 day cash flow forecast, which is a genuinely strong bundle at that price for a seller who would otherwise buy a separate tool for currency handling.

Note two things. Inventory Plus is a paid optional add-on available only on Growing and Established, so the inventory story carries a second charge. And Xero has posted that subscription prices increase from October 1, 2026, so the figures above have a shelf life.

Where it stops: same as QuickBooks. It is a ledger. It needs a settlement layer in front of it.

How to actually choose

Answer two questions and the list collapses.

First: which accounting system are you committed to? If the answer is QuickBooks Desktop or Enterprise, you are choosing between a much shorter list. If it is NetSuite, A2X is your documented path.

Second: has a product-level margin question ever changed a decision you made? If you cannot name one from the last six months, buy the cheap settlement syncer and revisit in a year. If you can name three, you are buying an inventory platform and the price difference is a rounding error against the bookkeeper hours it replaces.

Two reference documents will make every vendor demo shorter. Amazon publishes the structure of the settlement reports all of these tools read in its Seller Central settlement report reference, and the IRS covers accounting methods and the inventory rules that determine how you should be booking any of this in Publication 538. Read both before you sit through a demo, and none of the above is tax advice; check your specifics with a CPA who has closed marketplace books.