Know when you owe sales tax — before each state tells you
NexusMonitor connects to your Shopify store and automatically tracks your sales against every US state's economic nexus threshold. Get email alerts at 50%, 75%, 90%, and 100% — so you can register on time, not after the fact.
No credit card required. Connects to Shopify in under 2 minutes.
The nexus problem every growing Shopify store faces
Since the 2018 Wayfair ruling, every US state can require you to collect sales tax once you hit their threshold — typically $100K in sales or 200 transactions.
As your sales grow across state lines, you're silently approaching nexus thresholds. Most sellers don't find out until they receive a notice from a state tax authority — sometimes with back taxes and penalties.
Every order shipped to a different state counts toward that state's threshold. With 46+ states each having their own rules, tracking this manually in a spreadsheet breaks down fast.
Those tools handle tax calculation and filing AFTER you've registered. NexusMonitor handles the step before — telling you WHEN you need to register. Many sellers use both.
How NexusMonitor works with Shopify
Connect your store in under 2 minutes. No spreadsheets, no manual data entry.
Install from Shopify App Store
Find NexusMonitor in the Shopify App Store or sign up at nexusmonitor.app. One-click OAuth connection — no API keys or manual setup.
Automatic order sync
NexusMonitor pulls your last 12 months of Shopify orders and aggregates sales by state. Daily syncs keep your data current.
See your nexus map
Your dashboard shows a color-coded US map — green (safe), yellow (approaching), orange (warning), red (exceeded) — for every state.
Get alerts before you owe
Email alerts at 50%, 75%, 90%, and 100% of each state's threshold. You'll never be surprised by a nexus obligation again.
Everything a Shopify seller needs for nexus compliance
One-click Shopify connection
OAuth integration — no API keys to copy or paste.
46+ states monitored
Every state with sales tax, each with its own thresholds and rules.
Daily automatic sync
Orders sync daily. Your nexus data is always current.
Interactive nexus map
See your status across all states at a glance on a color-coded US map.
Threshold alerts
Email alerts at 50%, 75%, 90%, and 100% of each state's threshold.
Rule change monitoring (Pro)
States change their rules. Pro plan monitors all 46+ and alerts you when they do.
Registration guidance (Pro)
When you cross a threshold, Pro plan provides step-by-step instructions and direct links.
AI-powered support
Ask our chatbot any nexus question — instant answers, 24/7.
Pricing that makes sense for Shopify sellers
Start free for 14 days. No credit card required. Choose the plan that fits your business.
$19/mo
1 Shopify store, top 10 states monitored, email alerts at all thresholds.
Start Free Trial$39/mo
Unlimited platforms, all 46+ states, multi-platform sales aggregation.
Start Free Trial$69/mo
Everything in Growth plus rule change alerts, registration guidance, PDF nexus report export.
Start Free TrialDon't wait for a state tax notice
Connect your Shopify store to NexusMonitor and know exactly where you stand in every state. Free for 14 days, no credit card required.