What is economic nexus?

Economic nexus is a legal connection between a seller and a state, triggered solely by a seller's sales volume in that state — not by physical presence. Following the 2018 Supreme Court ruling in South Dakota v. Wayfair, every state with a sales tax has enacted economic nexus laws.

What is the most common threshold?

$100,000 in sales revenue OR 200 separate transactions in the prior or current calendar year is the standard threshold adopted by the majority of states. Some states use only the revenue test and have dropped the transaction count.

Do I owe tax the moment I hit the threshold?

Most states require you to register and begin collecting tax from the date you exceed the threshold, or from the first day of the next quarter or calendar month — rules vary. Once you cross the threshold, consult a tax professional for your exact start date.

Are marketplace sales (Amazon, Etsy, eBay) counted?

Most states require marketplace facilitators (Amazon, Etsy, eBay, etc.) to collect and remit tax on your behalf, and many exclude those sales from your own nexus calculation. Rules vary by state, so verify with your marketplace and a tax advisor.

Does this tool give legal tax advice?

No. This tool is a reference guide based on publicly available state threshold data. Tax law changes frequently. Always verify current thresholds with official state revenue department websites or a qualified sales tax professional before making compliance decisions.

Sales Tax Nexus Checker

Name: Sales Tax Nexus Checker
Availability: InStock
Author: Nham Vu

Enter your annual sales revenue and order count, then see every US state where you may have crossed the economic nexus threshold.

Your Annual Sales to a Single State

Revenue (USD)

Transactions

Enter your totals to a single state for the current or prior calendar year. The table below will highlight states where you may have crossed the nexus threshold.

Nexus likely Approaching Below threshold No sales tax

State	Revenue Threshold	Transaction Threshold	Status

Data current as of early 2025. Thresholds change — always verify with the relevant state revenue department or a licensed tax professional before making compliance decisions.

Summary

Enter your annual sales revenue and order count, then see every US state where you may have crossed the economic nexus threshold.

How it works

Enter your total annual sales revenue to the state you want to check.
Enter the number of separate transactions made to that state.
The tool compares your figures against each state's published economic nexus thresholds.
States where you have crossed a threshold are flagged as "Nexus Likely" in red.
States where you are approaching a threshold (within 20%) show a caution warning.
Use the search box to filter by state name or sort the table by threshold amount.

Use cases

Determining which states require you to collect and remit sales tax.
Annual nexus review after a high-growth year of ecommerce sales.
Quickly briefing a tax accountant on your nexus exposure across all states.
Assessing sales tax risk before launching in a new product category.
Teaching a new bookkeeper about the post-Wayfair economic nexus landscape.
Comparing revenue-only states vs. states that also count transactions.
Identifying states with lower transaction-count thresholds that could catch small sellers.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu