Unsure where you owe sales or use tax
Run Your Nexus Risk CheckAn economic nexus calculator helps businesses determine where they may have sales tax obligations across U.S. states. Economic nexus laws allow states to require remote sellers to collect and remit sales tax once certain revenue or transaction thresholds are exceeded. Most states enforce economic nexus thresholds based on total sales revenue or transaction volume within a state. Once these thresholds are crossed, the business must register for sales tax, begin collecting tax on taxable sales, and file returns in that jurisdiction. For ecommerce sellers, SaaS companies, marketplaces, and multi-state businesses, tracking economic nexus manually can be difficult. An economic nexus calculator analyzes sales data and compares it against state nexus thresholds to identify potential compliance obligations.
Economic nexus refers to the level of business activity that creates a legal obligation to collect and remit sales tax in a state. Unlike traditional tax rules, economic nexus does not require physical presence.
Instead, nexus may be triggered when a business exceeds defined thresholds such as:
The concept became widely enforced after the U.S. Supreme Court decision in South Dakota v. Wayfair, which allowed states to impose sales tax obligations on remote sellers based on economic activity rather than physical presence.
While rules vary by state, many jurisdictions use thresholds similar to the following:
State Threshold Example
Some states use only revenue thresholds, while others require both revenue and transaction counts to be exceeded.
Examples include:
These thresholds determine when businesses must register and begin collecting sales tax.
A sales tax nexus calculator analyzes business activity and compares it to state nexus rules.
Typical calculator inputs include:
The tool evaluates this data against state nexus rules and identifies where economic nexus may have been triggered.
Outputs typically include:
Businesses selling nationwide often operate in dozens of states simultaneously.
Economic nexus calculators help companies:
Without automated tracking, many businesses discover nexus obligations only after audits or compliance reviews.
Economic nexus exposure often develops when businesses grow quickly.
Common causes include:
Businesses may unknowingly cross nexus thresholds months before realizing registration is required.
TaxMap analyzes business sales data to determine where economic nexus thresholds may have been exceeded.
The platform helps businesses:
Instead of manually tracking dozens of state tax laws, companies can visualize their nexus footprint across the United States.
Check Your Economic Nexus Exposure