Sales tax nexus is a vital concept for businesses engaged in interstate commerce, as it dictates which states can enforce sales tax obligations on a business. Essentially, nexus is the connection or link between a business and a state that is significant enough to mandate the business to collect and remit sales tax to that state. Grasping what constitutes nexus and how it is applied is crucial for businesses to ensure compliance with state sales tax laws and avoid penalties.
What Is Sales Tax Nexus?
Nexus is the link or connection between a business and a state that allows the state to require the business to collect and remit sales tax. This connection is established when a business’s activities in the state are significant enough to warrant tax obligations. Without this nexus, businesses typically aren’t required to collect sales tax from customers in that state. When a business establishes a sales tax nexus in a state, it must adhere to that state’s sales tax regulations.
This means the business is responsible for collecting the correct sales tax from customers and sending it to the state government. Nexus can be created through various means, such as having a physical presence, engaging in significant economic activities, or even through remote sales.
Types of Nexus
A Sales Tax Nexus can be formed through various methods, and businesses need to understand these different types to accurately determine their sales tax responsibilities. Here are the main types of nexus that entities should be aware of in 2025:
1. Physical Presence Nexus
Physical presence nexus, often referred to as “traditional nexus,” is established when a business has a tangible presence in a state. This can include having a store, office, warehouse, employees, or independent contractors within the state. When this occurs, the state can mandate that the business collect and remit sales tax on transactions with customers in that state.
Examples of activities that create physical presence nexus include:
- Operating an office or retail store in the state
- Employing persons who work within the state
- Upholding a warehouse/distribution center
- Having sales representatives in the state
Essentially, employees or representatives working in a state can trigger physical presence nexus, even if a business is not physically located in a state, requiring the business to comply with the state’s sales tax laws.
2. Economic Nexus
Economic nexus, established by the U.S. Supreme Court, is now a key factor in determining sales tax obligations for remote sellers. This type of nexus applies to businesses that reach a certain level of sales or transactions in a state, even without a physical presence there.
Economic nexus thresholds differ by state, but they generally include:
- A specific dollar amount of sales made in the state
- A specific number of transactions
Economic nexus is especially significant for e-commerce businesses and remote sellers, as it enables states to enforce sales tax obligations on businesses with substantial sales activity but no physical presence in the state.
3. Click-Through Nexus
Click-through nexus, also known as affiliate nexus, occurs when a business generates sales in a state through affiliate dealings with individuals or companies that refer customers to the business. If a business has arrangements with affiliates in a state who refer customers via links or advertisements, the business may need to collect sales tax in that state, even without a physical presence there.
Click-through nexus is typically triggered when:
- A business has arrangements with affiliates who are remunerated based on the sales they generate
- Affiliates refer customers to the business through a website, online link, or advertisement
4. Marketplace Nexus
Marketplace nexus pertains to sales conducted through online platforms such as Amazon, or Etsy. By 2025, numerous states mandate that these online marketplaces collect and remit sales tax on behalf of their sellers. This means that the responsibility for sales tax obligations shifts from the individual seller to the marketplace itself.
Marketplace nexus rules generally apply under the following conditions:
- The seller uses a marketplace platform to sell goods or services.
- The marketplace collects payments and processes transactions on behalf of the seller.
- The marketplace operates in a state with marketplace facilitator laws.
How to Manage Nexus and Stay Compliant
Managing nexus can be challenging for businesses operating across multiple states or jurisdictions, as each state has its own thresholds and regulations. Therefore, it’s crucial to have a clear understanding of where nexus exists to prevent any compliance issues.
Here are some strategies for managing nexus effectively:
- Utilise Sales Tax Automation Tools – Implement sales tax automation software to help track sales, calculate sales tax rates, and ensure compliance with state regulations.Â
- Monitor Sales and Transactions – Maintain precise records of sales, transactions, and sales tax collected in each state where you operate. This helps determine if you’ve exceeded nexus thresholds.
- Assess Sales Tax State Nexus Laws – Stay informed about the nexus rules in each state where you do business. Nexus laws can vary significantly, so understanding the specific requirements for each state is essential.
- Make use of Tax Professionals – Due to the complexity of nexus laws, it’s wise to work with a tax professional who can guide you through these rules, file accurate returns, and minimize your sales tax liability.
Understanding and managing sales tax nexus is crucial for businesses, especially those involved in interstate or online commerce. Sales Tax Nexus laws have evolved, and with the advent of economic and marketplace nexus, staying informed is essential for compliance. By proactively tracking sales, reviewing state nexus laws, and consulting with a tax professional, businesses can avoid costly penalties and meet their sales tax obligations.
If you’re uncertain about your nexus status or need help with sales tax compliance, VAT IT Compliance can assist. Our experienced team offers the guidance and support needed to navigate nexus laws and ensure accurate tax reporting.
