The 5 vetted Ecommerce Accounting Firms

Kimberly Green | 2025-12-23

TL;DR: If you’re running a 7-figure ecommerce business solo with no financial systems, you don’t need just a tax preparer. You need a full-stack accounting partner. This post outlines exactly what to look for, what to ask on intro calls, and 5 vetted firms vetted by Sam’s List . Step 1: What You Actually Need (If You're Doing It All Alone) If you're making $2M+ in ecommerce revenue and managing everything yourself with only a tax preparer, here's what you really need: Monthly bookkeeping + close by the 10th of each month Inventory & COGS tracking that can handle returns, landed cost, chargebacks Multi-state sales tax support via TaxJar, Avalara, or in-house workflows S-Corp setup + payroll optimization (even if it’s just you) Quarterly tax projections + planning Cleanup help if books are behind Personal + business returns with zero handoff gaps Step 2: Exact Questions to Ask on Intro Calls Copy + paste these to vet like a pro: Ecom Experience "What ecommerce clients do you support ( Shopify / Amazon /etc)?" "How do you handle inventory, COGS, and returns? Periodic or perpetual?" Sales Tax + Systems "Do you manage sales tax in-house or work with TaxJar / Avalara ?" "What tools do you integrate with and prefer for ecom clients?" S-Corp Strategy "Do you handle payroll setup + reasonable comp for a solo owner?" "How do you approach quarterly estimates and tax planning?" Service Model "Who’s my day-to-day? How fast is your response time?" "Do you offer Slack or async support, and are monthly check-ins included?" Cleanup Capability "If books are behind, what’s your cleanup process?" "Do you handle IRS/state notices?" Step 3: Shortlist Criteria to Pick the Right Firm Look for firms that check at least 4 of 5 : ✅ Dedicated ecommerce practice ✅ Clear inventory methodology ✅ Sales tax compliance workflow ✅ Monthly close cadence + reporting sample ✅ Quarterly tax planning Step 4: 5 Vetted Ecommerce Firms from Sam’s List 1. Bookkeeper360 Full-service ecommerce bookkeeping + tax + fractional CFO Works with Shopify, Amazon, and more Fixed pricing from $350/mo to $10K+ Deep inventory, COGS, and sales tax support 2. CPA on Fire Big Four-trained CPAs offering concierge tax + strategy Includes personal and business returns Focused on HNW entrepreneurs and 7-figure founders Strong in proactive planning + fractional CFO support 3. ECOM CPA Built specifically for 7–9 figure ecommerce sellers Everything in-house: bookkeeping, CFO, tax planning & filing Handles inventory, multi-state, and S-corp setups Flat-fee pricing from...