Know where you owe sales tax before the state sends a notice
SellerThreshold is the nexus monitoring platform that growing Shopify, Amazon, and Etsy sellers use to stay compliant across all 50 states — without hiring a CPA to babysit spreadsheets.
Card required to start. Cancel anytime in one click before day 14 and pay nothing.
Powering sales tax compliance for brands doing $50K to $50M+ per year
Sales tax is a moving target
One missed threshold turns into back-tax liability, penalties, and painful hours with a CPA.
Unexpected state notices
Most sellers only discover nexus after a notice, penalty, or audit lands from a state they didn't know they owed.
45 states, 45 rulebooks
Economic nexus thresholds vary by state. Some trigger at $100k, others at $500k, several still use transaction counts.
Sales scattered across channels
Shopify, Amazon, Etsy, and WooCommerce orders sit in silos. No one gives you a single view of taxable sales by state.
See exposure across all 50 states — at a glance
Hover any state to see how close you are to triggering economic nexus. Red means you should have registered yesterday.
Hover a state to see its rolling 12-month exposure. Click for the full compliance guide.
Sample data for a $2.1M/yr apparel brand. Your real numbers appear the moment you connect a store.
How SellerThreshold works
Set it up once. Stay compliant as you grow.
Connect your stores
Link Shopify, Amazon, Etsy, or WooCommerce in one click. We only read order and sales data.
We track sales by state
SellerThreshold aggregates your rolling 12-month sales and transaction counts for every US state and district.
Get alerted early
Get an email the moment you cross a threshold or approach one, so you can register and collect before it's urgent.
Generate your Nexus Report
Download a clean report showing where you have nexus, where you're close, and recommended next steps.
Sellers stop worrying about nexus
The brands you're competing with are already using it.
"We got a notice from Washington two weeks after SellerThreshold flagged it. Because we already had it on the roadmap, our CPA closed it out in an afternoon instead of a month."
Marissa L.
Founder, DTC apparel brand
"I run four Shopify stores and sell on Amazon. I had no clean way to see combined sales by state. Now it's one dashboard and I stopped losing sleep over audits."
Devon P.
Operator, 7-figure e-commerce
"My CPA loves it. She used to charge me for nexus studies twice a year. Now she just pulls our report from SellerThreshold."
Priya S.
COO, home goods brand
Simple, predictable pricing
14-day trial. Card required — cancel anytime before day 14 and you won't be charged.
Starter
For solo sellers on one channel.
- 1 store
- Nexus monitoring — 50 states
- Email alerts
- Monthly Nexus Report
Growth
For growing brands selling across channels.
- Up to 3 stores
- Email + Slack alerts
- Weekly Nexus Report
- CSV / PDF exports
Scale
For teams that need hands-on support.
- Unlimited stores
- Multi-user access
- Priority support
- CPA partner network access
Not ready for a trial? Get the Nexus Playbook.
The same one-page checklist our best-performing sellers use to keep sales tax nexus under control. Free.