5 Business Triggers That Should Prompt an Immediate Nexus Review

There is a persistent myth in the world of state and local tax compliance that a nexus review is something you do once, early in your company’s life, and then file away. The reality is almost the exact opposite. Nexus is not a static fact about your business. It is a moving target that shifts every time your operations change, your team grows, your product evolves, or your customer base expands into new geographies. If your business is growing, your state tax footprint is almost certainly growing with it. What follows are five specific business milestones that should immediately prompt a conversation with your state and local tax advisor about whether your current nexus profile still reflects your actual exposure.

1. Hiring a Remote Employee in a New State

The shift to a more remote workforce, or a split between office days and home days, has created one of the most common and most underappreciated nexus triggers in modern business. Remote or partial work-from home employees can create additional filing jurisdictions. 

For payroll purposes, the company is generally required to register in that state, withhold state income tax from the employee’s wages, and comply with state unemployment and workers’ compensation requirements. For income tax nexus purposes, many states consider the presence of an employee sufficient to establish the company’s obligation to file an income or franchise tax return.  

A state revenue department does not send a welcome letter when an employee takes a job with your company from their spare bedroom. The obligation arises the moment the conditions are met, and the clock starts running on the company’s liability immediately. For a company with remote employees spread across multiple states, this exposure can accumulate quickly and quietly.

2. Crossing a Revenue or Transaction Threshold in a New State

Having customers in a state often results in income tax nexus, regardless of the dollar amount of the revenue earned from these customers, and even if the business has no other presence in the state.  This is often referred to as economic nexus. From a sales tax nexus perspective, revenue thresholds matter.  Most states have a $100,000 sales revenue threshold, but some like Alabama ($250,000), California ($500,000), and New York ($500,000) have higher limits. The rules around what counts toward these thresholds also vary by state, including whether marketplace sales are included, whether gross or net revenue is the measurement basis, and how the lookback period is calculated.  

Once a business exceeds a state’s threshold, most states require registration and tax collection to begin immediately or in the following filing period. For a business with growing e-commerce revenue or an expanding sales territory, crossing these thresholds can happen frequently. Any business selling across state lines without a robust system for monitoring its revenue by state against each state’s specific threshold rules, the risk of inadvertent non-compliance is real and ongoing. A periodic nexus review that benchmarks your actual sales data against current thresholds is the only reliable way to stay ahead of this. 

 3.Closing a Fundraising Round and Scaling Operations

Fundraising is a milestone worth celebrating. It is also, from a state tax perspective, one of the highest-risk periods in a company’s lifecycle. Capital infusion typically accelerates hiring, often in multiple states simultaneously, and expands the company’s commercial footprint into new markets. Both of these outcomes have direct implications for nexus. 

A company that raises a Series A and uses the capital to hire aggressively, expand its sales team, and push into new regional markets may find that within a single quarter, its nexus footprint has expanded significantly. New employees create payroll, income tax, and sales tax nexus. New markets also expand the economic nexus footprint. The pace of growth during a fundraise often highlights the fact that the compliance infrastructure has not kept up with the filing requirements. 

It is worth noting that investors and their advisors are increasingly aware of this dynamic. State tax compliance, including nexus exposure and filing history, is a standard area of scrutiny in due diligence processes. Companies that have not conducted a nexus review in connection with a major fundraise may find historical exposure surfacing at exactly the wrong moment.

4.Launching a New Product or Service Line

Nexus analysis is not just about where you operate. It is also about what you sell. The taxability of products and services varies significantly by state, and a new product line can change your compliance obligations even in states where you are already registered. 

Consider a software company that has historically sold perpetual licenses, which may be exempt from sales tax in certain states, and now launches a subscription-based SaaS offering. Many states treat these two products very differently for sales tax purposes. Digital goods, downloaded software, SaaS products, and subscription services are subject to a wide range of taxability rules that differ dramatically across jurisdictions. Introducing a new product without analyzing its taxability in every state where you have customers is a common source of unexpected exposure. 

The same principle applies on the income tax side. A new service line may generate income that is sourced differently under a state’s apportionment rules, affecting the portion of your company’s income subject to that state’s corporate tax. A business with a new product or service launch should treat that event as a prompt to revisit its nexus and taxability analysis, not just its marketing strategy. 

5. Acquiring Another Business or Being Acquired 

Mergers and acquisitions create some of the most complex scenarios that tax advisors encounter. When one business acquires another, it often inherits not only the target company’s assets and contracts but also its historical state tax obligations and any exposure from periods of prior non-compliance. States generally do not forgive historical liabilities simply because a business changed hands. 

At the same time, the combined entity created by an acquisition may itself have nexus in states where neither the buyer nor the seller previously operated. If the acquired company had employees, customers, or revenue sources in states the acquiring company had not previously entered, the transaction can effectively create new nexus overnight. 

For businesses going through M&A processes on either side of the table, a pre-transaction nexus study is a critical element of tax due diligence. Understanding the combined entity’s state tax footprint before the deal closes allows both parties to account for historical exposure in the deal economics and to build a compliance plan that addresses any gaps before they become audit targets. 

The Takeaway 

Nexus reviews are not a one-time exercise. They are an ongoing discipline that should be integrated into the natural rhythm of a growing business. Any significant operational change is an occasion to ask whether your state tax footprint has changed and whether your compliance program still reflects your actual obligations. 

At Escalon, our State and Local Tax practice is structured to help businesses stay ahead of these changes rather than discover them after the fact. We work with clients across both the indirect tax side, including sales and use tax, and the direct tax side, including income and franchise tax, to ensure that growth events do not quietly outpace compliance. 

If any of the five triggers above describe a recent development in your business, a nexus review is a prudent next step. The cost of the review is almost always considerably less than the cost of the exposure it uncovers, and in fact, there are tax mitigation strategies that Escalon can utilize to help limit historical exposure.