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ARJE Blog

Practical bookkeeping and tax operations for Amazon sellers and the professionals who serve them. Written by a working practitioner, not a content team.

The $10,000 FBA COGS Trap

Most Amazon FBA sellers overpay taxes by $3,000–$10,000 every year because they calculate Cost of Goods Sold the wrong way. Here's how to fix it before the April 15 deadline.

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Reading because your own books don’t add up?

Start with the Foundation Diagnosis — a $495 fixed-fee, read-only forensic pass over your QuickBooks, credited 100% toward the cleanup if you engage within 30 days of your report. Start the Foundation Diagnosis →

Guides on this site: Amazon FBA Bookkeeping · Quarterly Estimated Taxes