E-commerce Bookkeeping Resources

Inventory accounting, sales tax compliance, multi-channel reconciliation, and platform-specific guides for online sellers.

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Pillar Guide

E-commerce & Marketplace Seller Bookkeeping Guide

Your Shopify store did $1.2 million in gross sales last year. Amazon added another $800K. Etsy kicked in $150K. When your CPA pulled the numbers together, you owed $38,000 in taxes on income you thought was $240,000 — but was actually $167,000 after marketplace fees,…

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Guides & Articles

Amazon FBA Bookkeeping: Fees, Inventory & Sales Tax

Amazon deposited $47,312 into your bank account last month. Your Seller Central dashboard shows $68,440 in gross sales. The $21,128 difference — 30.9% of your revenue — vanished into a maze of referral fees, FBA fulfillment fees, storage charges, advertising costs, and return processing deductions….

Shopify Store Bookkeeping: Payments, Refunds & App Costs

Your Shopify store processed $94,000 in orders last month. Shopify Payments deposited $88,400 across 22 separate daily payouts. The $5,600 difference is scattered across transaction fees, refunds, chargebacks, and a Shopify Payments reserve hold you did not know existed. Now your bookkeeper is trying to…

Multi-Channel Seller Reconciliation: Amazon + Shopify + Etsy

You sell on Amazon, Shopify, and Etsy. Amazon pays you every two weeks. Shopify pays daily. Etsy pays weekly. Each platform calculates fees differently, reports revenue differently, handles refunds differently, and deposits money into your bank account on a different schedule. Your bank statement shows…

E-commerce Sales Tax Compliance: A State-by-State Guide

You have been selling on Amazon for three years and never filed a sales tax return. Amazon collects and remits sales tax on your behalf through marketplace facilitator laws — so you thought you were covered. Then you launched a Shopify store, and suddenly you…

COGS and Inventory Accounting for Online Sellers

You sold 12,000 units last year at an average price of $28. Your supplier invoices total $96,000, so your COGS is $8.00 per unit and your gross margin is 71%. Except it is not, because you also spent $14,400 on ocean freight, $7,200 on customs…

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