

Calls during EST/PST hours · Email replied within 24hrs


Calls during EST/PST hours · Email replied within 24hrs
If your bank balance doesn’t match your P&L, you don’t have a sales problem—you have a bookkeeping leak.
Your payouts arrive as one lump-sum deposit in QuickBooks. Amazon fees, storage costs, PPC ads, and refunds stay hidden—warping your true product margins and making profitable items look like losses.
You are expanding across US states or Canada with zero tracking for Post-Wayfair Economic Nexus or GST/HST limits. Untracked tax liability can trigger surprise back-tax bills and penalties.
You pay $500+/month to a traditional accountant who asks “What is A2X?” and manually enters Shopify payouts as simple revenue—forcing you to fix their clearing errors yourself.
You don’t know your exact Cost of Goods Sold for inventory sold versus inventory sitting in FBA warehouses, leaving your month-end net income inaccurate and un-investor-ready.












A Specialized Remote Bookkeeping Firm Built Exclusively for E-Commerce. Our clients pay 30–50% less than traditional US firm rates for identical QuickBooks-certified quality. That isn't a compromise—that is the model.
Thelonex is a remote accounting firm serving e-commerce brands across the US and Canada. Our team holds specialized US QuickBooks certifications, follows strict North American standards, and works in your time zone. Top e-commerce firms use this exact global model—we are simply transparent about it.
We work exclusively with US and Canadian e-commerce merchants. Every profit statement, payout reconciliation, and tax report is built to North American GAAP standards.
We use QuickBooks Online, A2X, and TaxCloud—the exact stack high-growth Amazon and Shopify brands rely on for exact fee tracking.
Bookkeeping doesn't require physical presence. Your QBO access, reports, and filings are all delivered through secure cloud platforms.
No call centers, no generic ticket queues—one certified ProAdvisor who knows your store, payouts, and SKUs by name.
Essential accounting for startups and small businesses
Scaling e-commerce stores
Established sellers
Every month you wait is another month of reconciliation errors, missed sales tax deadlines, and numbers you can't trust. Thelonex fixes this — for Amazon FBA and Shopify sellers in the US and Canada — at a price that makes sense.



We are QuickBooks Online ProAdvisor certified and work exclusively with the tools your Amazon and Shopify business already runs on.
We monitor your Post-Wayfair economic nexus thresholds state-by-state as your sales grow. Using tools like TaxCloud and QuickBooks, we track when you cross filing limits, prepare the returns, and ensure you remain fully compliant across US state laws and Canadian GST/HST/PST regulations.
You never need to give us your main account passwords. You simply invite us as an Accountant user in QuickBooks Online and grant standard secondary user permissions in Amazon Seller Central / Shopify. Access can be revoked at any time.
