Types of nexus in the US: If you operate a business in the United States — especially across multiple states or online — understanding the concept of nexus is crucial. Nexus determines whether your business is legally required to collect and remit Sales Tax in a particular state.
Many business owners are unaware that they may be liable for Sales Tax in states where they have no physical presence, simply due to the number or volume of sales made. In this article, we’ll explore the main types of nexus in the US, how to identify them, and what steps you need to take to stay compliant.
What Is Nexus?
In the context of Sales Tax, nexus refers to a connection between a business and a state that triggers a Sales Tax obligation. If your business has nexus in a particular state, you must:
- Register with that state’s Department of Revenue
- Collect Sales Tax from buyers in that state
- Remit the tax and file periodic returns
📌 Nexus = Tax Obligation
Why Understanding Nexus Is So Important
Failing to recognize and act on your nexus obligations can result in:
- Uncollected taxes (which you may have to pay out of pocket)
- Penalties and interest for late filings
- Audits by state tax authorities
- Legal consequences for noncompliance
With more businesses selling online and across state lines, nexus rules are more relevant than ever.
Main Types of Nexus in the US
There are several types of nexus that may apply to your business. Let’s look at the most common ones.
1. Physical Nexus
Physical nexus is the most traditional and straightforward type. If your business has a physical presence in a state, it generally establishes nexus.
Examples of physical presence:
- A retail store, office, or warehouse
- A distribution center or inventory storage
- Employees working in the state (even temporarily)
- Participation in trade shows or events
- Third-party affiliates acting on your behalf
🏢 If your business physically operates or has people on the ground in a state — you likely have physical nexus there.
2. Economic Nexus
Economic nexus is based on your sales activity within a state, regardless of physical presence. This became possible after the 2018 South Dakota v. Wayfair Supreme Court decision.
Most common thresholds:
- $100,000 or more in annual sales to customers in a state
or - 200 or more separate transactions in that state (some states have eliminated the transaction count rule)
💰 Even if you operate 100% online from another state, you may owe Sales Tax due to economic nexus.
3. Affiliate Nexus
Affiliate nexus exists when a business is related to or works with another entity in a state that helps it establish or maintain a market.
Examples:
- An affiliated company that refers sales to your business
- A marketing partner or third-party agent that promotes your products
- A franchisee in another state
🔗 If a related party helps you sell in a state, you may trigger affiliate nexus — even without direct sales or presence.
4. Click-Through Nexus
Click-through nexus applies when your business gets referrals from in-state websites or influencers and compensates them for those referrals.
Example:
- You pay a blogger based in New York a commission for sales referred via affiliate links.
- If total referrals exceed a threshold (e.g., $10,000), you may have nexus.
🌐 Common in affiliate marketing, click-through nexus laws are currently enforced in several states.
5. Marketplace Nexus
If you sell on platforms like Amazon, Walmart, Etsy, or eBay, you may be subject to marketplace nexus laws. However, in many states, the marketplace facilitator (the platform) is responsible for collecting and remitting Sales Tax on your behalf.
Your responsibilities may include:
- Monitoring which platforms collect tax for you
- Keeping records of those transactions
- Reporting marketplace sales on your tax returns
🛒 Even if a marketplace handles collection, you may still need to file or report to stay compliant.
6. Temporary Nexus
Participating in trade shows, exhibitions, or short-term business activities in a state can sometimes trigger nexus, even if the activity is temporary.
🎪 Check state rules — some offer exemptions for limited-time events, while others treat even short visits as nexus-creating.
How to Identify If You Have Nexus
Identifying nexus starts with a state-by-state review of your business activities. Here’s a checklist to guide you:
Nexus Identification Checklist:
✔️ Do you have employees or contractors in the state?
✔️ Do you own or lease property (office, warehouse, inventory)?
✔️ Have you exceeded the economic threshold in the last 12 months?
✔️ Do you sell via affiliates, influencers, or referrers in the state?
✔️ Do you participate in trade shows or events?
✔️ Do you sell through online marketplaces?
If you answer “yes” to any of these, you likely have nexus and must take further steps.
What to Do If You Have Nexus in a State
Once you confirm nexus in a state, here’s what you should do:
- Register for a Sales Tax permit with the state’s Department of Revenue
- Collect Sales Tax from customers in that state
- Remit the tax and file returns on time (monthly, quarterly, or annually)
- Track your nexus regularly, especially with economic thresholds
- Keep detailed records for each jurisdiction
📋 Sales Tax compliance is ongoing. As your business grows, your nexus footprint can change quickly.
Get Expert Support with Nexus from JPTM Consulting
At JPTM Consulting, we specialize in helping businesses of all sizes navigate the complex world of Sales Tax nexus. Whether you operate across a few states or sell nationwide through online platforms, we provide:
- Nexus analysis and risk evaluation
- Sales Tax registration and filing
- Ongoing compliance tracking
- Audit preparation and support
- Personalized consulting for eCommerce, service businesses, and more
📞 Not sure where your business has nexus?
Let’s talk. Schedule a consultation with one of our experts and gain the clarity you need to stay compliant and confident.
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