Resources

Guides for Marketplace Operators

Operational accounting topics written for sellers who already understand their platforms. No introductory fluff. No generic tax advice.

  • Tax and Compliance April 28, 2026

    US Sales Tax Nexus for Canadian E-Commerce Sellers

    Amazon collects tax on marketplace sales, but that does not resolve your nexus obligations. Here is what Canadian sellers need to understand.

  • Reconciliation April 21, 2026

    Multi-Channel Reconciliation: Amazon, Shopify, and Walmart

    Three platforms, three payout schedules, three fee structures. Here is how to reconcile each deposit to actual revenue, fees, and tax collected.

  • Cash Flow and Operations April 20, 2026

    Inventory as a Cash Flow Problem: Why Healthy Margins Are Not Enough

    A profitable e-commerce business can run out of cash. Here is how inventory purchasing creates a cash gap, how payouts extend it, and what to track.

  • Reconciliation April 19, 2026

    How to Read a Shopify Payouts Report

    The amount that lands in your bank account from Shopify is not your revenue. Learn what each component means and how to reconcile it correctly.

  • Profitability March 5, 2026

    How to Calculate True Amazon FBA Profitability (After All Fees)

    Amazon's dashboard figures do not reflect actual profit. Here are the five cost layers every FBA seller needs to track to get to a true per-unit margin.

  • Tax and Compliance February 10, 2026

    Amazon GST/HST for Canadian Sellers: What You Owe and When

    Amazon collecting GST/HST does not eliminate your compliance obligations. What registered and unregistered Canadian sellers need to know.