Tax Compliance Without the Confusion: Shopify Sales Tax, Solved.
Get accurate reports, track economic nexus, and Autofile all state returns for just $25/filing. Start your 15-day free trial today.
Features That Save You Time, Stress, and Money
End-to-End Autofile
Never miss a filing deadline again. We automatically prepare, check, and submit your sales tax returns directly to state portals on time, every time.
Real-Time Nexus Tracking
Know exactly when and where you need to register. We constantly monitor your Shopify sales against the economic nexus thresholds of all US states, keeping you proactively compliant.
Filing Friendly Reports
Generate accurate, state-specific reports in seconds. Easily review tax collected via Shopify and simplify preparation for your accountant or tax authority.
Marketplace Exclusion
Avoid Double Paying Tax. Automatically exclude orders from third-party marketplaces (like Amazon or eBay) where the marketplace facilitator already handles the tax remittance.
Your Dedicated US Sales Tax Compliance Partner
Built by Tax Experts
Our team is composed of US tax specialists and e-commerce veterans who understand the complexities of nexus, SST, and Marketplace Facilitator laws.
Dedicated Human Support
We believe complex tax issues deserve real, responsive help. Our highly-rated support team is here to answer your questions and guide you to compliance.
Compliance in 3 Simple Steps
The Connection
The Intelligence
Review Your Liability & Nexus. View your tax liability report within hours. We automatically check your sales against economic nexus thresholds and display the required state registrations.
The Automation
Autofile & Stay Compliant. With one simple step, enable Autofile. Tax Rex handles the accurate preparation, submission, and remittance of all your state sales tax returns on time.
Available On
Shopify
Square
QuickBooks
Registration and Filing: Specialized Human Support
Effortless New State Registrations
- State Portal Execution
- Data Verification
- Complete State Guidance
- Avoid State Bureaucracy
Guaranteed Sales Tax Filing
- Timely Submission
- Form Preparation & Review
- Secure Fund Remittance
- Filing Confirmation
- Due Date Compliance
Sales Tax Filing & Compliance
Simple, Transparent Pricing
Sales Tax Filing
Fee $25
State Registrations
Fee $99
Did You Know?
Simple, Transparent Pricing. No Hidden Fees.
Every plan includes unlimited nexus tracking and filing-friendly reports. Only pay for filings when you actually file.
- All Plans Include
Unlimited Nexus Tracking
across states automatically
Filing Friendly Tax Liability Reports
reports for smooth filing
15-Day Free Trial*
before you commit
Dedicated Email Support
real support staff
People Love TaxRex
"Really wonderful customer service. They jump on any issues I have with any state and are super helpful. No way could I deal with all the various sales tax state rules on my own."
"Tax Rex handles all our USA recording, filing, and remittance. This has saved us a lot of time and has allowed us to focus on more strategic tasks. We appreciate the Tax Rex partnership very much!"
"I sort of stumbled through setting it up, but they were very helpful, and they have been very responsive every time I have a question or need to speak to them about my taxes."
Quick Navigation
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.
Get started
Built by US tax specialists for Online & Retail businesses. Simple, affordable, and fully automated sales tax compliance.