CPA Services for E-commerce Sellers and Online Businesses

Who This Is For

Shopify and WooCommerce store owners, Amazon FBA sellers, eBay and Etsy power sellers, dropshippers, direct-to-consumer brands, online wholesalers, and digital product creators.

Top Tax Issues for E-commerce Sellers

• Multi-state sales tax nexus and economic nexus thresholds

  After South Dakota v. Wayfair (2018), economic nexus thresholds (typically $100K in sales or 200 transactions per state) trigger sales tax registration and collection obligations. Marketplace facilitator laws shift some burden to Amazon / eBay but not all.

• Inventory accounting (cost of goods sold)

  IRC Section 471(c) allows small e-commerce sellers (with average gross receipts under $30M) to expense inventory as incurred instead of capitalizing: a major cash flow advantage. Cash vs accrual accounting choice further affects timing.

• 1099-K reconciliation

  Stripe, PayPal, Shopify Payments, Amazon, eBay, and Etsy all issue 1099-K. The threshold returns to $20,000 / 200 transactions in 2026 under OBBBA. Reconciling 1099-K gross receipts to actual revenue (after returns, fees, and chargebacks) is mandatory.

• International sales VAT / GST and customs

  Selling into the EU, UK, Australia, and Canada triggers VAT/GST registration thresholds. Each jurisdiction has its own rules; some require a fiscal representative.

Strategies TS CPA Uses

• Sales tax automation (Avalara, TaxJar) integrated with bookkeeping

  Automating sales tax calculation, registration, filing, and remittance prevents the most common audit and penalty exposure. We help select and integrate the right platform with QuickBooks Online or Xero.

• S-Corp election once net profit clears the threshold

  E-commerce businesses with net profit above ~$80K-$100K typically benefit from S-Corp election to reduce self-employment tax. Owner takes reasonable W-2 wages plus distributions.

• Section 471(c) cash inventory deduction

  For qualifying small businesses, expensing inventory under Section 471(c) instead of capitalizing it produces immediate cash flow benefit on growth-phase inventory builds.

• Bookkeeping integration with the storefront and payment platforms

  Shopify or Amazon-to-QuickBooks integrations pull settlements, fees, and refunds automatically, reducing month-end reconciliation time and producing tax-ready financials.