Quick Answer

For most online sellers asking what the best bookkeeping setup is for an e-commerce store, the answer is a two-part system: a general ledger accounting platform like QuickBooks Online or Xero, combined with a specialized accounting connector like A2X. A2X is not an accounting system and does not replace one. Instead, it sits between multi-channel sales platforms (such as Amazon, Shopify, eBay, Etsy, and Walmart) and your cloud accounting ledger. It translates complex lump-sum payout deposits into neat, accrued journal entries that account for gross sales, merchant fees, refunds, and collected sales tax.

Before choosing accounting software or connectors, online sellers must establish proper business infrastructure. Opening a dedicated business bank account and securing a formal business entity is the foundational step recommended by tax authorities. Services like ZenBusiness accounting help new sellers form an LLC, obtain an Employer Identification Number (EIN), and establish a clean separation between personal and business finances, while offering ZenBusiness Money Pro ($30 per month) for bundled expense tracking and tax preparation tools.

What Is A2X and How Does It Fit into E-commerce Bookkeeping?

Managing e-commerce bookkeeping manually is notoriously complex. When sales channels like Amazon, Shopify, or eBay deposit money into a business checking account, that deposit represents a net settlement figure rather than gross sales. A single $10,000 deposit from Amazon might represent $14,000 in gross customer purchases, minus $2,500 in seller fees, $1,000 in promotional discounts, $300 in customer refunds, and $200 in sales tax collected by the platform.

If an e-commerce business simply records that $10,000 deposit as gross income, its financial reports will be materially inaccurate. Gross revenue will be understated, expenses will be understated, and inventory calculations will fail. Conversely, importing every individual customer transaction directly into a general ledger like QuickBooks Online or Xero creates thousands of line items that slow down software and make bank reconciliation nearly impossible.

This is where A2X operates. A2X connects directly to marketplace seller accounts and shopping platforms, pulls settlement files when payouts occur, and calculates the exact gross sales, fees, and taxes associated with each payout. It then posts a summarized journal entry into your accounting software that matches the exact deposit amount landing in your bank account down to the penny.

A2X supports accrual accounting principles by aligning sales revenue and channel fees with the period in which the transactions actually occurred, rather than the date the cash was paid out. This ensures that monthly profit and loss statements accurately reflect business performance. However, A2X cannot record general operating expenses, generate invoices for wholesale clients, track business bank balances, or manage payroll. It functions strictly as a data translation bridge between sales channels and your primary general ledger.

Essential Features and Operational Capabilities of A2X

A2X provides several automated tools designed specifically for multi-channel online retail and wholesale businesses:

  1. Automated Settlement Summaries: A2X continuously monitors linked sales channels for completed settlement periods. Once a settlement closes, A2X fetches the underlying data, categorizes every line item, and creates a summary invoice or journal entry in your connected accounting system.
  2. Accrual Period Splitting: Payout settlement periods rarely align neatly with calendar months. A settlement might run from September 24 to October 7. A2X automatically splits the transaction data across the two months, placing revenue and fees into their correct accounting months so monthly reporting remains accurate.
  3. Sales Tax and Marketplace Facilitator Mapping: Online marketplaces often collect and remit sales tax on behalf of sellers under marketplace facilitator laws. A2X separates sales tax collected by the platform from sales tax owed directly by the merchant, ensuring clean tax liability accounts in your ledger.
  4. Cost of Goods Sold (COGS) Tracking: Sellers can input unit cost prices directly into A2X or sync them from an inventory management tool. When a payout settlement posts, A2X can automatically generate a corresponding COGS journal entry, deducting the inventory value and logging the expense simultaneously.
  5. Multi-Currency Settlement Handling: For international sellers operating across foreign Amazon marketplaces or global Shopify stores, A2X handles currency conversions and calculates realized foreign exchange gains or losses before syncing data to the general ledger.

While A2X automates the flow of sales data, it relies entirely on the accuracy of your chart of accounts mapping during initial setup. Incorrect account mapping will send transactions to the wrong ledger categories, requiring accountant intervention to fix.

Official Recordkeeping Rules for E-commerce Sellers

Regardless of whether an e-commerce merchant uses A2X, spreadsheets, or a fully managed bookkeeping service, federal and state regulatory authorities enforce strict documentation and record retention standards. Automated tools make capturing data easier, but the business owner remains legally responsible for compliance.

According to Internal Revenue Service (IRS) Publication 583, "Starting a Business and Keeping Records," one of the first actions an entrepreneur should take when starting a business is opening a separate business checking account. The IRS explicitly instructs taxpayers to keep business accounts completely separate from personal checking accounts and to use the business checkbook as the primary source of information for recording business expenses.

IRS Publication 583 highlights specific categories of supporting documents that small businesses must retain to substantiate their bookkeeping entries:

  • Gross Receipts: Cash register tapes, bank deposit slips, receipt books, invoices, and credit card charge slips.
  • Purchases and Inventory: Canceled checks, cash register tape receipts, credit card sales slips, and invoices.
  • Expenses: Canceled checks, cash register tapes, account statements, credit card sales slips, and invoices.
  • Assets: Purchase and sales invoices, real estate closing statements, and canceled checks.

The federal tax code and regulatory agencies set clear statutory schedules for how long these records must be preserved:

  • General Federal Tax Records: The IRS guidelines in "How Long Should I Keep Records?" state that business owners must retain general financial records for at least 3 years from the date the return was filed.
  • Unreported Income: If a business fails to report income that exceeds 25% of the gross income shown on the tax return, the IRS requires records to be kept for 6 years.
  • Bad Debt and Worthless Securities: Claims for bad debt deductions or worthless securities losses require record retention for 7 years per IRS regulations.
  • Unfiled or Fraudulent Returns: The IRS specifies that records must be kept indefinitely if a business owner fails to file a tax return or files a fraudulent return.
  • Employment Tax Records: Under IRS rules, all employment tax records must be preserved for at least 4 years after the tax becomes due or is paid, whichever is later.
  • FLSA Payroll Records: The U.S. Department of Labor (DOL) Fact Sheet #21 states that under the Fair Labor Standards Act, employers must preserve payroll records, sales records, and collective bargaining agreements for at least 3 years.
  • FLSA Supporting Documentation: DOL Fact Sheet #21 mandates that employers retain supporting payroll records, including time cards, work schedules, piece rate tickets, and wage rate tables, for at least 2 years.
  • State Sales Tax Records: State regulatory authorities enforce independent retention rules. For example, California Department of Tax and Fee Administration (CDTFA) Publication 116 mandates that sales and use tax records must be retained for at least 4 years, and longer if the business is currently undergoing an audit.

Failing to maintain separate accounts or clean supporting documentation exposes an e-commerce business to severe penalties and disallowance of expense deductions during a tax audit.

Entity Setup and Banking: The Upstream Foundation

A common mistake made by new e-commerce sellers is adopting complex software like A2X and QuickBooks Online before establishing proper legal and financial foundations. Installing an accounting connector does not fix co-mingled personal and business expenses.

To maintain clean books that withstand IRS scrutiny, an e-commerce business requires a clear sequence of formation steps:

  1. Register a Business Entity: Forming a Limited Liability Company (LLC) or corporation establishes a formal legal identity distinct from the owner.
  2. Obtain an Employer Identification Number (EIN): Issued by the IRS, an EIN is necessary for business banking, state tax registrations, and federal reporting.
  3. Open a Dedicated Business Checking Account: In accordance with IRS Publication 583, a separate checking account ensures that all gross revenue deposits and business expenses flow through a single dedicated line, eliminating personal account noise.
  4. Implement Core Accounting Software: Establish a general ledger to track cash, liabilities, operating expenses, and asset accounts.
  5. Connect Automated Sales Connectors: Attach tools like A2X to stream summarized settlement data into the ledger without manual input.

For entrepreneurs launching new stores, ZenBusiness offers an integrated pathway to complete these foundational tasks. In addition to handling entity formation, registered agent services, and EIN registration, ZenBusiness provides ZenBusiness Money Pro ($30 per month). This service includes custom invoicing, expense tracking, income categorization, and tax preparation tools designed specifically for small business owners building their financial structure from day one.

Comparison of E-commerce Bookkeeping and Accounting Options

The following overview covers leading accounting platforms, specialized connectors, and bookkeeping services available to online merchants. Note that the entries below are listed alphabetically rather than as a numerical ranking.

  • A2X: A specialized e-commerce accounting connector that automates settlement summarization for Amazon, Shopify, eBay, Etsy, and Walmart sales channels. It syncs summary journal entries into QuickBooks Online, Xero, or Sage. A2X does not manage general business bank accounts or run financial reports on its own. As of 2026-10-06, it is priced from $29 per month per sales channel, with Walmart from $79 per month.
  • Bench: A specialized tech-enabled bookkeeping service that combines proprietary software with dedicated human bookkeepers. Bench imports bank transactions and prepares monthly financial statements for business owners. However, because Bench uses cash-basis reporting by default, e-commerce sellers requiring detailed accrual inventory or complex multi-channel settlement splitting may need specialized add-ons.
  • Link My Books: An automated e-commerce payout connector similar in function to A2X. It connects platforms like Amazon, Shopify, eBay, and Etsy to QuickBooks Online and Xero, turning payout files into summarized journal entries with automated tax mapping. It does not publish a flat tier: pricing runs through a calculator based on order volume and channel count.
  • QuickBooks Online: The dominant cloud accounting software platform in North America. It provides a complete general ledger system, balance sheet reporting, accounts payable and receivable, mileage tracking, and broad third-party app integration capabilities (including native connections and A2X integrations). Tiered plans range from simple ledger tracking to advanced corporate tools.
  • Wave: A simple cloud-based bookkeeping platform that provides free core accounting and invoicing features for micro-businesses and sole proprietors. While Wave works well for straightforward service businesses, it lacks native accrual settlement mapping features required for high-volume e-commerce stores, though basic bank feeds are supported.
  • Xero: A cloud general ledger platform widely favored by e-commerce accountants due to its strong bank reconciliation interface, flexible chart of accounts, and support for unlimited users on standard plans. Xero integrates natively with A2X and other specialized inventory and sales tax engines. As of 2026-10-06, plans are Early at $27 per month, Growing at $59 and Established at $97; the 80% discount for 3 months is promotional.
  • ZenBusiness Money Pro: A business financial management service ($30 per month) offered by ZenBusiness as an add-on to business formation. It provides small business owners with automated income and expense tracking, custom customer invoicing, and tax preparation features. It serves as a unified option for new founders seeking entity compliance and straightforward bookkeeping support from a single vendor.
  • Zoho Books: A comprehensive cloud accounting application within the Zoho business suite. It offers native inventory tracking, automated workflows, client portals, and sales channel integrations suitable for small to mid-sized online sellers. Pricing is structured across monthly tiers, including a limited free plan for very low-revenue businesses.

Selecting the Right Setup for Your Online Store

Determining the ideal bookkeeping combination depends primarily on sales volume, platform complexity, and business maturity:

1. New or Early-Stage E-commerce Merchants

Sellers who are just launching or generating modest order volumes should prioritize legal and financial separation over expensive software stacks.

  • Primary Need: Business formation, EIN, separate bank account, and simple expense tracking.
  • Recommended Approach: Form an LLC through a provider like ZenBusiness, then open a business bank account with a bank. Utilize ZenBusiness Money Pro ($30 per month) or a standalone entry-level ledger like Wave or Zoho Books to track launch costs and early receipts without paying for heavy enterprise connectors.

2. High-Volume, Multi-Channel Merchants

Stores selling across multiple platforms (e.g., Shopify plus Amazon FBA) with significant order volumes require strict accrual accounting and automated settlement splitting.

  • Primary Need: Accurate gross revenue tracking, platform fee separation, inventory COGS automation, and fast reconciliation.
  • Recommended Approach: Pair a robust general ledger like QuickBooks Online or Xero with a dedicated connector like A2X or Link My Books. This configuration eliminates manual data entry, prevents ledger bloat, and provides GAAP-compliant monthly financial statements.

3. Hands-Off Merchants Wanting Delegated Bookkeeping

Business owners who prefer not to manage software, journal entries, or account mappings directly.

  • Primary Need: Professional oversight and finished monthly reports.
  • Recommended Approach: Hire an outsourced e-commerce bookkeeping firm or utilize a hybrid service like Bench, ensuring the provider understands accrual inventory concepts and marketplace sales tax handling.

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