A2X vs Sellerboard: What Each Tool Actually Does, and What Neither Does

A2X and Sellerboard are not alternatives to each other. A2X is a bridge. It takes a marketplace settlement, summarizes it, and posts a balanced journal entry into QuickBooks Online, Xero, or NetSuite so the ledger agrees with the payout. Sellerboard is a dashboard. It reads Amazon account data and reports profit by product, advertising performance, reimbursement opportunities, and stock warnings, all of it outside the accounting file. Sellers who buy one expecting the other end up frustrated for reasons that have nothing to do with either product.

What A2X actually does

A2X sits between a sales channel and an accounting system. When a settlement closes, it pulls the report, groups the activity into totals by type, and writes a summarized journal entry that reconciles to the deposit. Product sales go to revenue. Refunds go to contra revenue. Referral fees, fulfillment fees, storage, and advertising go to expense accounts you map once. The net drops into a clearing account that the bank deposit clears out. If you have never opened the underlying document, Amazon publishes a reference for its settlement reports, and reading it makes any tool’s output easier to check.

On the A2X pricing page as of August 2026, plans for Amazon, Shopify, Etsy, eBay, and PayPal each start at US$29 per month, Walmart starts at US$79 per month, and multi-channel plans run on a separate track. It integrates with QuickBooks Online, Xero, and NetSuite. That NetSuite connection matters more than it sounds: it is unusual among tools at this price, and it means a seller who outgrows a small business ledger does not have to abandon the bridge.

What A2X is optimized for is a clean, auditable month end. An accountant opening the file sees journal entries that trace back to specific settlements. That is the whole design goal, and it explains most of the tool’s behavior, including the parts sellers find limiting.

What Sellerboard actually does

Sellerboard is profit analytics for Amazon sellers. It pulls the same underlying data, then answers a different question: which products are actually making money after fees, advertising, returns, storage, and unit cost.

The main areas it covers are product level profit reporting, advertising performance tracking so campaign spend can be set against the products it moved, reimbursement claim detection for inventory Amazon lost or damaged, and inventory alerts that flag when a SKU is heading toward a stockout or sitting long enough to accumulate storage charges. Its pricing was not available at the time of writing, so check the current plans on the vendor’s own site rather than relying on figures quoted elsewhere.

The audience is the operator, not the bookkeeper. A seller checks Sellerboard on a Tuesday afternoon to decide whether to raise a price, kill a campaign, or reorder. Nobody closes a month in it.

Side by side

Dimension	A2X	Sellerboard
Primary job	Post settlement activity into the ledger	Show product level profitability
Who uses it daily	Bookkeeper or accountant	Seller or operations lead
Output	Summarized journal entries	Dashboards, reports, alerts
Level of detail	Grouped totals per settlement	Per product, per campaign
Writes into your accounting file	Yes	No
Reimbursement claims	Not its function	Yes
Advertising analysis	Posts ad spend as expense	Tracks campaign performance
Accounting systems	QuickBooks Online, Xero, NetSuite	Not an accounting integration tool

Which one your situation calls for

Your books are the problem

If your accountant is asking why the bank deposits do not agree with reported sales, if your gross margin looks impossible, or if Amazon deposits have been categorized straight to a revenue account for a year, the problem is in the ledger. A bridge fixes that. Analytics will not, because analytics never touches the file.

Your product decisions are the problem

If the books are fine but you cannot say which twenty SKUs generate your profit and which forty quietly consume it, a dashboard is the answer. Clean summarized journals will never tell you that. They are not meant to.

Both are the problem

Plenty of sellers run one of each, and that is a perfectly sensible setup. The bridge keeps the ledger honest, the dashboard drives daily decisions, and the two never conflict because they operate on different layers. The cost of running both is real, and worth weighing against the alternative of a single system that does more of the work in one place.

What neither one does

This is the section that saves people money, so read it before you buy anything.

Neither is your general ledger

A2X writes into an accounting system. Sellerboard sits beside one. Neither replaces QuickBooks Online, Xero, or whatever else holds your chart of accounts, your bank reconciliations, and your financial statements. You still need the ledger, and you still pay for it.

Neither makes the accrual and cutoff calls

Settlement periods do not line up with calendar months. Somebody has to decide whether a settlement straddling month end gets split, accrued, or pushed whole into the month it closes. Somebody has to decide how to treat a reserve balance, how to handle refunds against prior period sales, and what to do when a marketplace issues a correction against a settlement you closed two months ago. Software applies the rule. It does not choose the rule. The IRS covers accounting periods and methods in Publication 538, and if you are picking a method for the first time or changing an existing one, that is a conversation with a CPA. Sales tax adds its own layer, and those rules vary by state and change regularly, so your state’s department of revenue is the authority there, not a tool.

Neither posts SKU level cost of goods into your accounting system across several marketplaces at once

A2X summarizes by design, so cost of goods arrives as a total rather than per product. Sellerboard calculates product level profit but keeps the result in its own reporting environment, where the ledger cannot see it. Doing both, pushing per SKU cost into the accounting system while syncing Amazon alongside Shopify, Walmart, eBay, and TikTok Shop, is a third category of tool, and products such as ConnectBooks sit in it. That category is not automatically the better buy. Its entry pricing is meaningfully higher, with the Gold tier starting at $149 per month as of August 2026 against A2X’s US$29 starting point for a single channel, and A2X connects to NetSuite where ConnectBooks does not. Pick based on how many marketplaces you actually run and how badly you need product level cost inside the ledger rather than beside it.

Neither replaces the person reading the output

Every tool here produces numbers that look authoritative. A mapped account can still be the wrong account. A unit cost entered once and never updated will quietly poison a year of margin reports. Someone has to check the mapping when a marketplace adds a fee type, and no subscription covers that.

How to decide

Ask which failure is costing you more right now. Books that do not reconcile, or products you cannot rank by profit. Buy for that failure, and buy the tool built for it. If both hurt equally, and you are running more than two marketplaces, look at whether one system covering both jobs works out cheaper and simpler than two subscriptions and the reconciliation work between them.

What you should not do is buy an accounting bridge and expect a profit dashboard, or buy a profit dashboard and wonder in March why your books are still a mess. Both tools do what they say. The mismatch is almost always in the expectation.