Many businesses discover economic nexus only after they receive a notice from a state tax authority. Economic nexus rules determine when a business must collect and remit sales tax in a state even if the business has no physical presence there.
Understanding what activities trigger economic nexus helps businesses monitor compliance and avoid unexpected tax exposure.
If you are new to the concept of nexus, start with the Full Economic Nexus Guide
Revenue Thresholds That Trigger Nexus
The most common trigger for economic nexus is revenue generated from sales within a state.
Most states use a revenue threshold of approximately $100,000 in annual sales. Once a business exceeds this threshold, it must register for sales tax and begin collecting tax from customers in that state.
Some states use higher thresholds. For example, a few states apply a $500,000 revenue limit before nexus is triggered.
You can see the exact thresholds for every state in the Economic Nexus by State Guide
Transaction Thresholds
Some states also include transaction thresholds. A business may trigger nexus if it completes a certain number of transactions within a state.
For example, some states previously used a threshold of 200 transactions annually.
Many states have removed the transaction threshold and now rely solely on revenue limits. However, several states still include transaction rules as part of their nexus criteria.
Tracking both revenue and transaction counts is critical for businesses selling across multiple states. The Economic Nexus Calculator can help estimate whether these thresholds have been exceeded.
Marketplace Sales
Businesses selling through online marketplaces such as Amazon, Walmart, or Etsy may trigger nexus through marketplace sales activity.
Most states require marketplace facilitators to collect sales tax on behalf of sellers. However, marketplace activity can still contribute to a business reaching economic nexus thresholds.
Inventory and Fulfillment Centers
Economic nexus is not the only factor that determines sales tax obligations. Inventory stored in warehouses or fulfillment centers may create physical nexus.
Amazon FBA sellers often store inventory in multiple states without realizing it. This can trigger nexus requirements even before economic thresholds are reached.
Businesses using third party logistics providers should monitor where inventory is stored and shipped.
You can learn more about how warehouses trigger nexus in the article.
Remote Employees and Contractors
Remote employees or contractors located in another state may also create nexus obligations.
For example, if a business hires a remote employee working from a different state, that presence may establish physical nexus regardless of economic activity.
Many businesses expanded remote teams in recent years, which has increased the complexity of sales tax compliance.
A deeper explanation is available in the Remote Employees and Sales Tax Nexus guide.
When Nexus Is Triggered Mid Year
Economic nexus thresholds are typically measured over a 12 month period or a calendar year. If a business crosses the threshold during the year, it may be required to register and begin collecting tax shortly afterward.
Each state has its own rules regarding how quickly businesses must register after crossing the threshold.
Some states require registration within weeks while others allow businesses to begin collecting tax in the following month.
For a detailed explanation of mid year threshold crossings, see What Happens When You Cross Economic Nexus Mid Year
What Happens After Nexus Is Triggered
Once economic nexus is triggered, businesses must take several steps to remain compliant.
- Register for a sales tax permit
- Begin collecting sales tax on taxable transactions
- File periodic sales tax returns
- Remit collected tax payments
Failing to take these steps may result in back taxes, penalties, and interest. Businesses that discover nexus after operating for several years may also face historical tax exposure.
You can estimate potential liability using the Sales Tax Exposure Calculator.
Why Businesses Should Monitor Nexus Continuously
Sales tax compliance becomes more complex as businesses expand into new states. Growth in ecommerce sales, marketplace activity, and digital products can quickly trigger economic nexus across multiple jurisdictions.
Monitoring nexus thresholds helps businesses avoid unexpected tax liabilities and maintain compliance as they grow.
Automated monitoring tools can simplify this process by tracking revenue and transactions across states.
Related Sales Tax Resources
If you are evaluating sales tax obligations for your business, you can start with the Economic Nexus guide and the Sales Tax Nexus overview.
To review current thresholds across the country, see the Economic Nexus by State reference or explore additional guidance in the Sales Tax Nexus Hub.
Businesses analyzing potential liability can review the Sales Tax Exposure Analysis or estimate potential exposure using the Sales Tax Exposure Calculator.
If you track activity across multiple states, tools like the Economic Nexus Tracker and the Rolling 12-Month Nexus Tracker can help monitor thresholds.
You can also estimate whether your sales exceed state thresholds using the Nexus Threshold Calculator.
For a structured compliance overview, businesses may also review the Sales Tax Risk Report.
You can also review current state thresholds in the Economic Nexus Thresholds by State reference.
FAQs
What triggers economic nexus?
Economic nexus is triggered when a business exceeds certain thresholds of sales revenue or transactions within a state.
What is the typical economic nexus threshold?
Many states use a $100,000 annual revenue threshold, although some states use higher limits.
Do marketplace sales count toward economic nexus?
Yes. Marketplace sales can contribute to revenue thresholds that trigger economic nexus.
Does inventory create economic nexus?
Inventory stored in another state usually creates physical nexus rather than economic nexus.
What should businesses do after triggering nexus?
Businesses should register for a sales tax permit, begin collecting sales tax, and file sales tax returns with the state.
