Multi-State Sales Tax Nexus Calculator: 2026 Economic Nexus Thresholds
Check whether your sales revenue and transaction count in a state trigger economic sales tax nexus under current state thresholds.
How Multi-State Sales Tax Nexus Is Calculated
The calculator compares your trailing 12-month (or current/prior calendar year, per state rule) revenue and transaction count in a state against that state's economic nexus thresholds established after South Dakota v. Wayfair. Nexus is triggered if you meet or exceed the revenue threshold, or, in states that still use one, the transaction-count threshold.
Most states now use a revenue-only test after dropping their 200-transaction alternative between 2019 and 2026 (examples: California, Washington, Wisconsin, Colorado, Massachusetts, Tennessee, Indiana, North Carolina, Illinois). A handful of populous states — Ohio, Michigan, New Jersey, Virginia, New York, Georgia — still apply a transaction-count trigger alongside the revenue test. This tool covers the 20 most populous/economically significant states individually; for any other state, the common default is a $100,000 revenue threshold measured over the current or prior calendar year, with no transaction-count test, though a few states (Alabama, Mississippi) use $250,000. Always confirm the exact current rule on the state's own department of revenue site before registering.
How to Use the Multi-State Sales Tax Nexus Calculator
Select the destination state
Choose the state where your customers are located — nexus is evaluated per state, not for your total nationwide sales.
Enter your revenue in that state
Use your gross sales revenue delivered into that state over the state's measurement period (trailing 12 months, or current/prior calendar year).
Enter your transaction count in that state
Enter the number of separate sales transactions into that state; this only matters in states that still enforce a transaction-count threshold.
Review your nexus status
See whether you've crossed the revenue and/or transaction threshold, how close you are as a percentage, and how much revenue room remains before you'd trigger nexus.
Real-World Scenario Example
"An online seller ships $78,000 of goods and completes 340 separate orders into Ohio over the trailing 12 months."
Inputs
Result
Ohio's revenue threshold ($100,000) is not met (78% of threshold), but the 200-transaction threshold is exceeded (170% of threshold) — economic nexus is triggered on the transaction count alone, so the seller must register and collect Ohio sales tax.
Important Disclaimer
This calculator provides a simplified educational estimate based on published economic nexus thresholds for the states covered and is not tax or legal advice. Thresholds, measurement periods, and marketplace-facilitator rules change frequently and vary by state; always confirm current requirements with the applicable state's department of revenue or a licensed tax professional before making registration or collection decisions.
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