Multi-channel settlement parsing (Shopify, Amazon, TikTok, Walmart), Wayfair-era multi-state nexus monitoring, and inventory accrual COGS — for DTC and marketplace sellers between $30k and $500k/mo in GMV.
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Ecommerce bookkeeping is not generic small-business bookkeeping with a Shopify integration tacked on. Three things make it structurally different. First, marketplace settlements net out fees, advertising, refunds, FBA storage, returns processing, and marketplace-facilitated sales tax — your Amazon deposit of $48,200 might represent $72,000 in gross sales. Post the net and you under-report revenue by 33%, fail to match the 1099-K, and lose visibility into ad spend ROI. Second, inventory: under IRC §471 most ecom sellers must use accrual accounting for inventory (cost of goods bought goes to inventory asset, then to COGS at point of sale) once gross receipts exceed $29M average over 3 years — but even below that threshold, cash-basis inventory accounting hides your true gross margin until year-end. Third, the post-Wayfair multi-state sales tax landscape: 45 states + DC enforce economic nexus, most at $100k OR 200 transactions in the state (some at $500k like CA, TX, NY). Marketplace facilitators (Amazon, eBay, Etsy, Walmart, TikTok Shop) collect and remit in most states, but Shopify-direct, your own DTC site, and wholesale do not — those count toward your own nexus footprint. Cross a threshold without registering and back tax + penalties + interest applies retroactively. We track your nexus by state monthly, parse settlements from every channel via A2X or Link My Books, set up accrual COGS (or document why cash is appropriate for your size), and reconcile to 1099-K to the dollar at year-end.
These are the niche-specific issues a generic $200/mo bookkeeper either misses or charges extra for.
Channel settlements (Amazon, Shopify Payments, TikTok) net out fees, ads, refunds, FBA storage, marketplace tax — posting net understates gross by 20-40%
Wayfair-era economic nexus thresholds ($100k or 200 transactions in most states; $500k in CA/TX/NY) on direct sales (non-marketplace) — crossing without registering is retroactive back tax
Inventory accrual (IRC §471) vs cash basis: most sellers under the $29M average gross receipts threshold qualify for cash, but it hides gross margin until year-end count
Amazon 1099-K reports gross including refunds; reconciling to net deposits requires settlement-level parsing your generalist bookkeeper does not do
ecomBalance and Bean Ninjas dominate this SERP at $400-$1,000/mo with inventory-accrual workflows, but both push annual contracts and have onboarding lead times of 4-8 weeks. A2X handles the journal sync but stops there. Pilot and Bookkeeper360 do not specialize. There is a real opening for a transparent monthly-pay specialist under $500/mo with multi-state nexus monitoring built in.
| Provider | Monthly | Focus | Notes |
|---|---|---|---|
| Ecom-specialist bookkeeping with inventory accrual | |||
| Premium ecom + Shopify ecosystem | |||
| Generalist online business | |||
| 2 channels included, A2X settlement parsing, nexus monitoring, accrual COGS, CGMA review |
3 questions. We reply within 1 business day with a specific scope of work and flat monthly rate for your situation.
Three channels, three settlement workflows. Shopify Payments deposits gross 1-3 days after sale, Stripe fees billed separately; we pull the Shopify Payments payouts report and reconcile to bank. Amazon settles biweekly net of FBA fees, referral fees, advertising, refunds, storage — A2X parses each settlement into a journal entry breaking out gross sales, channel-specific fees, ads, refunds, and marketplace tax. TikTok Shop is similar but newer; Link My Books handles it. All three flow into a single QBO chart of accounts with channel as a class so your management P&L shows per-channel gross revenue, fees, ad spend, contribution margin. Two channels are included in the standard $495/mo tier; channels 3+ are +$95/mo each because each one is a separate settlement workflow.
No — only in states where you have nexus. Two ways to get nexus: physical (employees, inventory, warehouse — note that FBA inventory storage in an Amazon warehouse can create physical nexus in that state) or economic. Economic nexus thresholds under Wayfair (2018) are typically $100,000 in sales OR 200 transactions in a state in a year. California, Texas, New York are $500k. Marketplace facilitators (Amazon, eBay, Etsy, Walmart, TikTok Shop) collect and remit in 47 states + DC for marketplace sales — those do not require you to file in those states for marketplace orders. But Shopify-direct, your own DTC site, wholesale, and B2B sales count toward your OWN nexus and are your obligation. We track direct (non-marketplace) sales by state monthly and warn you the quarter before you trip a threshold so you can register before you owe penalties.
Under IRC §471 and the 2017 TCJA simplification, businesses with average gross receipts under $29M (2026 threshold) over the prior 3 years can use the cash method and treat inventory as non-incidental materials and supplies — meaning expensed when used or sold, but you can also treat inventory consistent with your financial statements. Practically: cash basis with proper year-end inventory adjustment gives you a tax outcome similar to accrual without monthly inventory accounting. For management reporting we still recommend accrual (post inventory to asset at purchase, move to COGS at sale) because cash basis hides your gross margin during the year. For tax filing we model both methods at year-end and pick the cleaner outcome. Over the $29M threshold accrual is mandatory.