Stop registering in states where you do not owe sales tax—or bleeding 8.25% out of pocket where you already crossed nexus. Separate Marketplace Facilitator (Amazon/TikTok) gross sales from direct Shopify taxable revenue, model monthly state filing fees vs uncollected tax exposure, and audit all 45 sales-tax states in 50ms—100% locally in your browser.
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=SUMIFS(ecommerce_gross, SKU, A2) - VLOOKUP(A2, ecommerce_fees!A:D, 4, FALSE)⚠️ Why Manual Formulas Fail at Scale: Manual spreadsheet formulas break on multi-row ecommerce sales adjustments, tiered fees, and CSV delimiter shifts.
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Many states exclude Marketplace Facilitator sales (where Amazon, Walmart, or TikTok already remit tax) and B2B resale certificate orders from taxable nexus calculations. Registering prematurely locks you into $35–$65 per return in filing fees across 4 to 12 returns a year.
If you sell a $24 consumable or accessory, hitting 200 orders in Illinois, Georgia, or New Jersey triggers economic nexus at just $4,800 in sales—long before you ever approach $100,000.
Once you cross economic or 3PL warehouse physical nexus without turning on Shopify tax collection, every day of uncollected 7%–9.5% sales tax comes directly out of your net operating margin.
Connecting your store to cloud tax platforms exposes your state-by-state historical revenue and forces you into $99/mo+ recurring plans. Run unlimited nexus audits locally in your browser for a $19 one-time buyout.
Zero configuration, zero cloud server dependencies, instant execution.
Load your trailing 12-month state revenue and order counts across Shopify DTC, Amazon/TikTok Marketplace Facilitator channels, and wholesale B2B exempt sales.
Simulate $100,000 revenue vs 200-transaction thresholds, deduct Marketplace Facilitator excluded volume, and compare annual filing fees ($300–$720/state/yr) against uncollected tax liability.
Download a clean state-by-state action plan categorizing each state into Register Immediately, Safe Under Threshold, or Marketplace-Excluded.
See why merchants and prosumers switch from monthly subscriptions to our local buyout.
| Feature / Metric | 🛡️ NexusGuard Studio | ☁️ Cloud SaaS (TaxJar) |
|---|---|---|
| Pricing Model | 🛡️ 100% Local Browser RAM | ☁️ Cloud SaaS Upload |
| Marketplace Facilitator Revenue Deduction | 🛡️ 100% Local Browser RAM | ☁️ Cloud SaaS Upload |
| 3PL & FBA Physical Inventory Nexus Flag | 🛡️ 100% Local Browser RAM | ☁️ Cloud SaaS Upload |
| Store Financial Privacy | 🛡️ 100% Local Browser RAM | ☁️ Cloud SaaS Upload |
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Why pay recurring monthly SaaS fees for ecommerce sales workflows? Switch to NexusGuard Studio for a single $19 buyout.
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In every state with a sales tax, Marketplace Facilitators (Amazon, TikTok Shop, Walmart, Etsy) are legally required to collect and remit sales tax on marketplace orders. While a few states include gross marketplace sales in the initial threshold test, most states exclude marketplace revenue when determining whether your direct Shopify store must register—saving you thousands in unnecessary filing fees.
While states like California, Texas, New York, and Pennsylvania have eliminated the 200-transaction rule or raised thresholds to $500,000, many states still enforce a '$100,000 OR 200 orders' rule. If your average order value is $25, just 200 orders ($5,000 in sales) technically crosses the transaction threshold.
Holding physical inventory in a third-party fulfillment center creates Physical Nexus in that state from day one—even if your sales in that state are well below $100,000. Auditing your 3PL warehouse states alongside economic thresholds prevents uncollected back-tax surprises.
If you barely cross 200 small orders in a state with $4,500 in taxable sales (~$330 in annual tax), registering immediately locks you into $350–$600 per year in monthly or quarterly filing fees plus CPA prep costs. Our calculator helps you quantify the exact dollar exposure vs compliance overhead.
No. All state threshold checks, Marketplace Facilitator deductions, and back-tax calculations run 100% locally inside your browser. Zero sales figures or customer data ever leave your computer.
TaxJar and Avalara charge $99 to $299+ every month just to monitor nexus and manage returns, and automatically bump your monthly bill when order volume grows during Q4. NexusGuard Studio is a $19 one-time buyout (or €3.99 24-hour pass) with a 14-day refund guarantee.