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Sales Tax Nexus Monitor for WooCommerce — US state economic nexus thresholds
State monitor State details Other sales
WooCommerce

Sales Tax Nexus Monitor for WooCommerce — US state economic nexus thresholds

Shows where your sales are getting close to a US state economic threshold: 50 states, DC and Puerto Rico, each on its own window. Runs inside your site with no subscription. This is information, not tax advice.

Download Free
Pro · one-year licence Staging copies are included. The more sites, the cheaper each one
Compatibility
WordPress 6.2+ · WooCommerce 8.0+ (tested on WordPress 7.1 and WooCommerce 11.2) · PHP 7.4+ (tested on 8.3) · HPOS and classic storage · plugin language: English
Licence
a site + a staging copy, annual
Trial
7 days, no card, one per site
Updated
12 November 2026
Or all 421 Pro modules with All Access — 3 244 UAH / year ≈ €65

What Free has,
and what Pro adds

The free version works with no time limit. Pro adds the rest of the features in the table.

Feature Free Pro
All 50 states, DC and Puerto Rico: threshold, period, your sales and transactions ✔ ✔
Statuses: below, approaching (you choose the share), threshold reached, no sales, no sales tax ✔ ✔
Each state on its own window: previous or current year, 12 months, quarters ✔ ✔
Source and check date on every row ✔ ✔
Refunds lower the sales of the month they were made in ✔ ✔
Choice of counted statuses, shipping and tax ✔ ✔
Admin notice when a state reaches its threshold ✔ ✔
Data stays on your site, no account needed ✔ ✔
E-mail alerts when a state approaches or reaches its threshold — ✔
Registration tracker — ✔
Marketplace and other sales added by hand — ✔
CSV: state summary and month-by-month figures — ✔

What it looks like

State monitor
The state table with threshold, period, sales and status. Test data.
State details
An open row: what the state counts, the rule date, the source.
Other sales
Pro: sales outside WooCommerce by state and month.

Key points

What the monitor shows

The monitor is a table of all states: threshold, measuring period, your sales, transactions, progress and status.

What the admin gets

A click on a state opens the details: the figures of every period, what the state counts, how it treats marketplace sales, the date the rule took effect, a link to the source and the check date.

How much it costs

The base version is free. Pro costs 990 UAH for a one-year licence. A year of updates, technical support and all Pro features.

The trial starts when you ask

A fresh install is the free version, nothing switches on by itself. The “Try Pro for 7 days” button → e-mail → the key right in the window and by e-mail.

One key — a site and a staging copy

Moving the site? Unlink the licence on the old domain and activate it on the new one yourself. A staging copy (staging., dev.) works with the same key and does not take a site slot. For studios — keys for 5 or 25 sites, or unlimited.

Technical requirements

  • WordPress 6.2+, WooCommerce 8.0+, PHP 7.4+.
  • Orders with US state addresses.
  • Orders in other currencies count at the rate you enter. Without a rate they are left out, and the screen says so.

Version history

v1.0.1 Current 12 November 2026

Fixed the licence status shown after the trial period: it now says plainly that the trial has ended.

v1.0.0 First release November 2026

State monitor, own windows, sources, notices.

Frequently bought with Sales Tax Nexus Monitor

All Access Need more? All modules (421) under one licence, new ones are added automatically. 3 244 UAH≈ €65 Learn more →

Full module description

Since South Dakota v. Wayfair, a US state can ask an out-of-state seller to collect its sales tax once sales into that state pass a set level. The level, the period and what counts differ from state to state. Sales Tax Nexus Monitor holds your orders against those thresholds and shows where you stand.

This is information, not tax or legal advice. The table summarizes each state published rule on the date shown next to it, and the state text decides. Talk to a tax professional before you register.

What the monitor shows

The monitor is a table of all states: threshold, measuring period, your sales, transactions, progress and status. The top line shows how many states reached the threshold and how many are approaching. Filters leave only what you need. Shoppers see nothing: the module works only in the admin.

What the admin gets

A click on a state opens the details: the figures of every period, what the state counts, how it treats marketplace sales, the date the rule took effect, a link to the source and the check date.

In Pro you can add sales outside WooCommerce by hand: marketplaces, in person, another site. They count in the month and state you enter.

How it works, step by step

  1. The plugin reads orders by shipping or billing state.
  2. It counts sales on each state window, with refunds taken off.
  3. It compares them with the threshold and shows a status.
  4. Orders are read once a day or with a button.
  5. In Pro an e-mail arrives as soon as a state gets close.

Under the hood

  • The threshold table ships with the plugin. If it has not been updated for over 120 days, the plugin shows a warning.
  • The monitor counts all sales. In states that count only taxable or retail sales, the real figure may be lower.
  • The plugin does not know about a warehouse, staff or other ties to a state: thresholds cover economic nexus only.
  • Local taxes are not in the table.

How to install

  1. Plugins → Add New → Upload Plugin: pick the zip and activate.
  2. WooCommerce → Sales Tax Nexus: open the monitor.
  3. On the Settings tab pick the order statuses and the approaching share.
  4. For Pro: paste the key or start the 7-day trial.

The module is not on wordpress.org yet: the free version and Pro are one archive from this page. Without a key it works as the free version.

Questions
about the module

Didn't find the answer? Message us on Telegram and we'll reply within a business day.

@catcode_support Setup, compatibility, activation
Does the plugin register me in a state?

No. It only shows figures. You decide with a tax professional.

Do Amazon sales count?

No, they are not in WooCommerce. In Pro you can add them by hand.

How often is the threshold table updated?

With new releases. Each row shows its check date.

Where does my data go?

Nowhere. Everything is counted on your site.

Is there one for OpenCart?

Yes, it is a separate module.

Not quite what you are looking for?

We build custom modules for WordPress, WooCommerce, OpenCart and Shopify. Tell us about the task and we'll prepare an estimate.

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