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Getting Started
Go to the Shopify App Store, search for Tax Rex, and click Install. Your store data syncs automatically —
no manual setup required.
Yes, Tax Rex comes with a 15-day free trial with full access to the app and reports. You only get charged after the Free Trial is over.
Nexus & Compliance
Economic nexus means you’re required to collect and remit sales tax in a state once your sales cross a
threshold (usually $100,000 or 200 transactions). Tax Rex automatically monitors your Shopify sales against
every state’s threshold and alerts you when you’re approaching or have crossed one.
Only in states where you’ve crossed the economic nexus threshold. Tax Rex tracks this for you and
notifies you when registration is required.
Billing & Pricing
Monthly plans start at $10/month based on order volume. Filing costs $25 per return per state, and new
state registrations are $99 per state — significantly less than competitors like Avalara or TaxJar.
No. Your monthly plan covers nexus tracking and reports. You only pay for filings ($25/return) or
registrations ($99/state) when you actually use those services.
Filing & Support
Once enabled, Tax Rex prepares your sales tax return, reviews it for accuracy, submits it directly to the
state tax portal, and remits the payment — all on time. You don’t need to log into any state portal yourself.
Tax Rex automatically excludes marketplace facilitator orders from your reports so you’re never
double-paying tax that Amazon or eBay already remitted.
Email us at taxrex@support.com. Our US tax specialist team typically responds within one business day.
Built by US tax specialists for Online & Retail businesses. Simple, affordable, and fully automated sales tax compliance.