A Complete Guide For Businesses Selling Across US States

As businesses start operating in new locations, it's more and more essential to understand their tax liabilities. Businesses providing products or services in the USA can be required to pay sales tax in states where they have no physical location (store, office, or warehouse). The concept of economic nexus comes into play at that moment.
What is economic nexus? Economic nexus is a tie between a company and the state that is created by the economic activities performed in the latter, for example, sales or transactions.
Understanding what economic nexus means and how it can influence your business can assist e-commerce, SaaS companies, and other businesses working internationally to avoid any mistakes in registration or sales tax collection.
This guide will show you how the economic nexus works, how companies can figure out whether there is an obligation in sales tax, and how tax compliance solutions can assist you.
What Is Economic Nexus in Sales Tax?
However, with business expansion, tax compliance plays a major role in ensuring that companies understand the tax obligations when expanding in new markets. Businesses that offer their products or services in the United States may find it necessary to collect sales taxes even when they do not have a physical office, warehouse, or stores in such states. Economic nexus becomes vital in this case.
Economic nexus can be defined as the relationship that a business has with a certain state based on its economic activities in such states. In terms of sales tax, economic nexus involves remote sellers who should consider registering, collecting sales tax, and remitting the collected sales tax when the economic nexus requirements in the state are met.
Before economic nexus requirements were adopted, physical presence was the main criteria that were used to determine the collection of sales tax by an out-of-state seller. However, the adoption of online business activities led to change in the nature of doing business.
A business can make substantial sales in a state without establishing a physical location in such states.
How Does Economic Nexus Work?
As businesses enter new markets, it is important to comprehend their tax obligations. If companies are engaged in sales or provision of services across the United States, they might have to collect and pay sales tax in a state without having a physical presence there (like offices, stores, warehouses). In such cases, economic nexus comes in handy.
Economic nexus provisions usually apply the sales, transactions, or any other criterion defined by a particular state to see whether remote sellers have created an adequate economic link.
For instance, consider a company operating out of California and selling subscription packages to customers all over the country. The company does not operate in any other state but its sales to customers residing there grow.
At some point, when the state's economic nexus provisions are fulfilled, the company might be required to register for sales tax, collect sales tax on transactions that qualify for taxation, and submit returns.
All of these requirements vary depending on a state, sales, and particular measurement period.
Why Is Economic Nexus Important for Businesses?
Understanding economic nexus helps businesses identify where they may have tax responsibilities before those obligations become difficult to manage.
It is especially important for companies that:
Sell products through e-commerce websites.
Provide SaaS subscriptions or digital services.
Operate across multiple US states.
Sell internationally into the US market.
Experience rapid growth in online revenue.
Manage several brands, entities, or sales channels.
For these businesses, monitoring economic nexus is an important part of a broader sales tax compliance strategy.
What Is the Difference Between Economic Nexus and Physical Nexus?
Economic nexus and physical nexus describe different ways a business can establish a taxable connection with a state.
1- Physical Nexus-
Generally, a physical nexus can be associated with the actual operations of a business in a state. Under certain circumstances, a physical nexus can be considered when a business entity operates through having an office, storage facility, retail outlets, or any other business activities in that state.
For instance, an online business might be required to pay sales tax in a state where it stores its inventory.
2- Economic Nexus-
The economic nexus is concerned with economic presence and does not require the physical presence of a business.
Economic nexus can be achieved through satisfying the sales threshold of a state or any other qualifying test without having an office or employees there.
Factor | Economic Nexus | Physical Nexus |
Main basis | Economic activity | Physical presence or qualifying activities |
Common example | Reaching a state sales threshold | Operating a warehouse in a state |
Relevant businesses | Remote sellers and online businesses | Businesses with qualifying local operations |
Monitoring approach | Track sales and applicable thresholds | Review locations, inventory, personnel, and activities |
A business can have both economic and physical nexus in the same state. Reviewing only one type of nexus may leave potential tax obligations unidentified.
How Do Economic Nexus Thresholds Work?
Economic nexus thresholds are the level of economic activity that could cause a tax to become due in a specific state because of the economic nexus test.
There is no universal economic nexus threshold for all US states. Each state has its own regulations, and those vary in terms of the volume of sales, the types of sales, the measurement period, and the timing of registration.
1. Sales Revenue Thresholds-
A lot of states apply dollar-based thresholds in determining the existence of economic nexus by a remote seller.
The state may apply the threshold at $100,000 of qualifying sales. If the company makes qualifying sales above the threshold within the applicable measuring period, the company may have something to do about it.
But remember that $100,000 is just an illustration. The dollar amount used in the threshold varies among the states, and the sales subject to the threshold calculation also differ from one state to another.
2. Transaction-Based Thresholds-
Other states have transaction-count requirements or other such tests.
In past years, there were states where both the revenue and transaction tests were used, or one of them was used. These tests may have changed in some states, so one should not rely on the old system of transaction tests anymore.
What Should Businesses Include When Calculating Sales?
Businesses should review the relevant state's rules to determine which transactions count toward the threshold.
Depending on the jurisdiction, the calculation may involve:
Taxable and nontaxable sales.
Exempt transactions.
Sales made through online marketplaces.
Direct website sales.
Wholesale transactions.
The current or previous measurement period.
Accurate sales data is essential because using the wrong sales base can lead to an incorrect assessment of economic nexus.
How to Determine Whether Your Business Has Economic Nexus
Learning about the economic nexus is just the beginning. There must be a way to establish which states might be impacted by your company’s sales activities.
Step 1: Identify the States Where You Sell
Make a list of US states that have your company’s customers in them.
The list should include all sales made on your website, through the subscription service, on the online marketplace, or any other channel you use for selling your products. If you have several brands/legal entities, identify which entity makes the sale.
Step 2: Review Sales by State
Transaction data should be sorted by the location of your customers.
You should have record keeping that makes it possible to analyze sales revenue, transaction volume where applicable, exemptions, refunds, and marketplace transactions. These data form the basis of economic nexus analysis.
Step 3: Compare Sales With State Requirements-
Compare your sales statistics with the current economic nexus law in each state.
Remember that there might be differences between states when it comes to the amount of revenue or the measurement period. You need to look at what the specific definition says about the calculation of the amount.
Step 4: Identify Registration and Collection Requirements
If there is a threshold that your business has met, then check the obligations associated with registration and collecting tax in the state.
The date for either registering or collecting the tax depends upon the jurisdiction and the situation. Simply meeting the threshold does not guarantee that the same collection date will apply to all states.
Step 5: Monitor Changes Regularly
Economic nexus is not a one-time assessment. As sales increase, businesses may cross additional thresholds. Changes in product offerings, sales channels, and state regulations can also affect compliance requirements.
Regular monitoring helps finance teams identify potential obligations and respond in a timely manner.
Economic Nexus for E-commerce and SaaS Businesses
Economic nexus can affect businesses across several industries, but the specific considerations may vary by business model.
E-commerce Businesses
E-commerce retailers can reach customers throughout the US without having to set up stores in every state. If the size of the customer base increases, businesses might end up meeting or exceeding economic nexus standards in additional states.
E-commerce businesses need to track the amount of sales per destination and know which items will be taxable. E-commerce firms that are operating both on their own website as well as using online marketplaces have to realize that collecting taxes via marketplace does not solve all issues.
SaaS and Software Companies
The SaaS business makes income from its recurring revenue from subscriptions, software licenses, and digital products.
Nonetheless, taxing of software and digital goods varies across jurisdictions. In some states, the transactions concerning certain software are taxed, while in others, such transactions are tax-exempt or are subject to taxation on a case-by-case basis.
Why SaaS Businesses Need Special Attention
In the case of a SaaS firm, it is essential to consider both economic nexus and taxability of the products. For instance, just because the business hits the economic nexus threshold in one particular state does not imply that all the subscriptions sold by the company in that particular state become taxable.
The firm will have to see if the products offered by it are taxable or if there are any exceptions to taxation on such products.
International Businesses Selling Into the US
The international business will have to determine whether there is a need to assess sales tax requirements in the US while trading with American customers as well.
There is no necessity for a firm to set up an office in the US in order for economic nexus to become applicable to it.
The international vendor will also have to take into account how its sales tax obligations in the US correlate with its VAT/GST obligations.
Common Economic Nexus Mistakes Businesses Should Avoid
Economic nexus management can be a challenge even for experienced organizations operating across different states. For example, a mistake made by many companies is the assumption that a lack of physical presence implies no sales tax obligations, yet the company may have to register and collect sales tax upon satisfying economic nexus requirements.
Another mistake is using the same sales volume threshold in all states because thresholds, measurement periods, and registration requirements may vary from one state to another, thus requiring separate analysis of specific state requirements.
Furthermore, some companies only pay attention to their sales and forget about product taxability. Meeting an economic nexus threshold doesn’t necessarily mean that all transactions are taxable.
Neglecting to consider the impact of sales from marketplace or multi-channel sales may also become problematic. For companies making sales using their company website, online marketplace, and other sales mediums, there may be a need to consider their economic nexus and tax obligations in relation to this.
Lastly, companies should not restrict their review of tax obligations to just once. It is important to monitor sales and conduct regular reviews, particularly due to fast-paced development and changing regulations of states.
How Tax Automation Can Simplify Economic Nexus Management
Sales tax management becomes progressively complicated when dealing with many states as the company expands. Tax automation is essential in assisting finance departments in organizing information and processes for compliance purposes.
Automated Sales Monitoring
Tax technology can be used to aggregate information regarding sales and analyze activity in relation to set parameters. This will make it easier to identify those states that need further analysis as sales rise.
Tax Calculation and Reporting
Tax calculation engines may prove to be useful for applying appropriate tax legislation to transactions provided that proper settings have been made. The reporting engine may help in conducting reconciliations and will make sales transactions more visible for the finance department.
Registration and Filing Support
Businesses can employ the use of technology as well as managed compliance solutions to coordinate registration activities, complete filings, and organize the entire filing process.
Which solution is right depends on the jurisdictions of the business, volume of transactions, and available resources
