Before You Can Fix It, You Have to Find It.

What Sales Tax Nexus Actually Means

Nexus is the legal connection between your business and a state that triggers an obligation to collect and remit sales tax. It exists in two forms, and most businesses have more of it than they realize.

Physical nexus is straightforward. An office, a warehouse, inventory stored at an Amazon fulfillment center, a remote employee working from home, a sales rep who visits customers in a state. Any of these creates an obligation.

Economic nexus is less obvious and far more common. Since the Supreme Court's 2018 decision in South Dakota v. Wayfair, every state with a sales tax has enacted economic nexus laws. In most states the threshold is $100,000 in annual sales or 200 transactions. Cross it and you have an obligation to collect and remit sales tax in that state, regardless of whether you have ever set foot there, regardless of whether you knew the law existed.

Here is the part that catches most businesses off guard. Nexus tells you where you have an obligation. But having nexus does not automatically mean you owe sales tax on everything you sell in that state. What you sell matters. SaaS is taxable in some states and exempt in others. The same is true for professional services, digital products, food and beverage, manufacturing inputs, and dozens of other categories. A nexus study does both: it maps where you have obligations and it determines whether what you sell is actually taxable there.

Those two questions together are what tell you what you actually owe. Doing that analysis before you do anything else is what creates options. If you have nexus in a state but your product is exempt, you may have no liability at all. If you have nexus and your product is taxable, you know your exposure and you can address it through a VDA on your terms before a state finds it. The nexus study is what makes that strategy possible.

Who Needs a Nexus Study

Any multi-state business that has not formally assessed its sales tax footprint needs one. The most common situations:

• •You sell online and ship to customers in multiple states. Post-Wayfair, geographic distance is irrelevant. If your sales volume crosses state thresholds, you have obligations. Many businesses crossed those thresholds years ago and have been accruing exposure ever since.
• •You use Amazon FBA or any third-party fulfillment. Amazon stores inventory across dozens of fulfillment centers nationwide. Every state where your inventory sits creates physical nexus, regardless of your sales volume there. This is one of the most frequently overlooked sources of multi-state exposure, and it affects nearly every FBA seller.
• •You have remote employees, contractors, or sales reps in other states. A single remote worker creates nexus in most states. With remote work now the norm, businesses that have not revisited their nexus picture since 2020 are often surprised by what a current assessment shows.
• •Your revenue has grown significantly in recent years. Growth that pushes you past economic nexus thresholds in additional states creates new obligations. Most businesses do not have a process to monitor this in real time.
• •You are preparing for an M&A transaction. A buyer's due diligence team will look for this. A nexus study with a clean, documented analysis of your multi-state obligations, including any exposure that has been addressed through a VDA, is the kind of record that protects a deal from the tax liability conversations that kill them.
• •Your CPA flagged potential exposure. If an advisor raised this and it was not resolved, the exposure did not go away. It compounded.

What the Study Covers

1. 1Business footprint review. We map every state where your business has a physical or economic presence. Offices, employees, contractors, inventory locations, trade show attendance, and sales rep activity are all in scope.
2. 2Transaction analysis. We review your sales data by state to identify where you have crossed or are approaching economic nexus thresholds. This includes marketplace sales, direct sales, and wholesale volume.
3. 3Taxability assessment. This is the step most nexus reviews skip. Knowing you have nexus is only half the picture. We assess whether what you sell is actually taxable in each state where you have an obligation. In some cases this dramatically changes the liability picture. In others it confirms the full exposure. Either way, you need to know before you decide what to do next.
4. 4State-by-state obligation summary. You get a clear, prioritized output: states that require immediate action, states approaching threshold, and states with no current exposure. Ranked by risk so you know where to focus first.
5. 5Recommended next steps. For states with past exposure, we map the VDA option and what it would cost to resolve. For states requiring new registrations, we handle the filings. For states approaching threshold, we set up monitoring so you know the moment you cross.

What Happens If You Skip This Step

States have become significantly more sophisticated at identifying out-of-state businesses with nexus. They purchase third-party transaction data. They cross-reference marketplace sales reporting. They audit businesses in their state and use the supplier records to identify unregistered out-of-state vendors.

When a state finds you before you find them, the VDA window closes. You are in an audit, the state sets the terms, and your options narrow considerably. A nexus study is a fraction of the cost of the situation it prevents.

Common Questions