Getting mail from the department of revenue usually causes a knot in your stomach. Something landed in your inbox or mailbox from a state tax authority. It has words like "nexus questionnaire," "tax filing determination" or "business activity survey" across the top. There may be a deadline. It probably asks a series of yes/no questions about your business operations in that state.
If you're not sure what it is or whether to respond, stop. Do not fill it out yet.
This article explains exactly what a nexus questionnaire is, why states send them, what your response (or non-response) actually means and the single most important thing to do before you begin filling out the form. Because the way you respond, or don't respond, can determine whether you end up in an audit or qualify for a program that limits your liability significantly.
What You're Actually Looking At
Think of a nexus questionnaire as a state's way of asking if you belong in their tax system. The department of revenue wants to know if your business connection to their state is strong enough that you should be collecting and paying sales tax there.
When looking at your business, states care about two main triggers:
Physical nexus includes offices, employees, warehouses, equipment, inventory, contractors or even a sales rep passing through the state regularly.
Economic nexus means crossing a revenue or transaction threshold in that state, even with no physical presence at all. In 2018, the Supreme Court ruled in South Dakota v. Wayfair that states can tax businesses based purely on sales volume. This created economic nexus. Now, most states draw the line at $100,000 in sales or 200 transactions per year.
If the state concludes you have nexus, you'll be required to register, file returns and potentially address any prior periods where you should have been collecting but weren't.
Why Did You Get One?
States send these to businesses they suspect may have a tax obligation they're not meeting. Their data sources include third-party information returns, marketplace and platform data, business license filings in other states, trade publication subscriber lists and inter-agency data sharing.
Take a deep breath. Getting one doesn't mean you've been found guilty of anything. It means the state thinks you might owe something, and they're asking you to confirm or deny.
Why This Isn't Just Paperwork
A nexus questionnaire feels like a form. It's not just a form. It is the first step in a process that could lead in several different directions depending on how you respond, and some of those directions are significantly better than others.
Three things make this high-stakes:
1. Your answers create a legal record.
Once you submit a signed questionnaire, those responses are on record with the state. If you answered "yes" to something that wasn't quite accurate, or "no" to something that was actually a "yes, except for..." situation, it is very hard to change your answers later. The questions are almost always yes/no, which means your specific business circumstances often don't fit cleanly into the format. An unqualified "yes" can confirm nexus that may not actually exist in the way the state assumes.
2. Ignoring it is not a safe option.
Not responding doesn't make the questionnaire go away. Most states will take non-response as confirmation that you have nexus, issue an assessment on their own estimate of your liability and open an audit. You then have to fight that assessment, which is expensive, time-consuming and far less favorable than if you'd engaged proactively.
3. How you respond affects your VDA eligibility.
This is the piece most businesses miss. Most states offer a Voluntary Disclosure Agreement (VDA) program. This lets you come forward voluntarily. You pay back taxes and interest. In return, the state waives penalties and limits the look-back period to three or four years. It's one of the most valuable tools available to businesses with sales tax exposure.
Here's the critical nuance. Think of a VDA like turning yourself in for a speeding ticket to get a lighter fine. It only works if the police haven't already pulled you over. In the tax world, a nexus questionnaire is a form of contact. Some states consider this questionnaire a simple warning. Other states view it as the flashing police lights. The line varies by state, and it matters enormously.
If you respond to the questionnaire in a way that triggers an audit opening, your VDA window may close simultaneously.
Before You Do Anything Else
| DO | DON'T |
| Set it aside and read it carefully before responding or involving anyone else internally | Don't forward it to a non-tax employee and ask them to fill it out quickly |
| Note the response deadline (most questionnaires give 30 days) | Don't assume ignoring it is safe (non-response typically results in an automatic nexus determination) |
| Contact a sales tax professional before responding | Don't answer the questions the moment you receive it without understanding the implications |
| Preserve the envelope/email headers and the exact date received (this matters for VDA timing in some states) | Don't answer yes/no without context (the form format often doesn't accommodate your actual situation) |
| Assess your actual nexus footprint before you confirm or deny anything to the state | Don't assume an asset purchase or prior ownership change shields you (the state doesn't always care about that) |
| Ask a professional whether VDA eligibility is still intact given the questionnaire you received | Don't conflate answering the questionnaire with registering for sales tax (they're different actions with different consequences) |
The Option You Might Still Have (But Only If You Move Fast)
You might have sales tax exposure in the state that sent this questionnaire. You might also have exposure in other unregistered states. A VDA is often your best path to resolving the situation. It helps you avoid heavy penalties and an open-ended audit look-back.
Here's how VDAs work in this context:
- You (or a representative, often anonymously) approach the state and disclose your intention to come into compliance
- The state limits the look-back period, typically to 3 to 4 years rather than potentially unlimited for non-filers
- Penalties are typically waived entirely (penalties can represent 25 to 50 percent of the total tax owed)
- Once a VDA is finalized, those disclosed periods are generally closed to further audit
The Timing Issue
Most states disqualify businesses from VDA programs once the state has made direct contact regarding a specific liability. A general nexus questionnaire may or may not count as that contact, depending on the state. Some states draw a clear distinction between informational questionnaires and audit notices. Others treat any questionnaire response as closing the VDA window.
This is why the first call you make when you get a nexus questionnaire should be to a sales tax specialist, not your general accountant. The question isn't just "do I owe money?" It's "do I still have options, and which of them is most favorable given the exact situation I'm in right now?"
The rules vary significantly from state to state. In some states, responding to a questionnaire can trigger a closer review of prior periods, while in others your VDA window may remain open. Knowing these specific state rules can save your business tens of thousands of dollars.
Learn more about VDAs and registration options
Your Next Steps, In Order
Step 1: Don't Respond Yet
Put the questionnaire somewhere safe. Note the deadline. You have time to do this right.
Step 2: Identify the State and the Tax Type
The questionnaire should specify which tax it's addressing: sales and use tax, income/franchise tax or both. The implications differ. This article focuses on sales tax, which is the most common trigger.
Step 3: Assess Whether You Actually Have Nexus in That State
Do you have employees, contractors, property, inventory or regular in-state activity there? Have you crossed $100,000 in sales or 200 transactions in that state? Our nexus calculator can give you a starting read. But a questionnaire situation warrants a professional analysis, not just a calculator.
Step 4: Contact a Sales Tax Professional Before You Respond
This is not optional if there's any chance you have historical exposure. You need someone who can evaluate your actual nexus position, tell you whether VDA eligibility is still intact in this state and help you respond in a way that accurately reflects your situation without inadvertently creating a worse one.
Step 5: Respond Truthfully, Carefully and With Context
Once you've had professional guidance, respond. Truthful answers are required. There's no benefit to misrepresenting your activities, and misrepresentation creates far greater problems than whatever the underlying tax issue is. But "truthful" and "accurate" are not the same as "unqualified yes/no." A good advisor will help you provide context where the form doesn't accommodate your specific circumstances, sometimes through a supplemental letter alongside the required form.
Step 6: Understand What Comes Next
After the state receives your response, they'll either determine you don't have nexus (case closed), determine you do and require registration going forward or open a broader review of prior periods. What happens next depends heavily on how you answered and what your actual exposure looks like. Getting ahead of that analysis now, before the state drives the process, is always the better position.
One Questionnaire Is Often a Sign of a Bigger Picture
The fact that one state found you doesn't mean the others won't. States increasingly share data with each other. If your business has crossed economic nexus thresholds in multiple states without registering, this questionnaire may be the first of several.
This is also the moment to do a full nexus study: a complete analysis of where your business actually has obligations vs. where you're actually filing. Most businesses that receive their first nexus questionnaire discover, upon review, that they have similar exposure in 3 to 10 other states they hadn't accounted for. Addressing all of it proactively, through VDAs where eligible, is dramatically more cost-effective than addressing each state as it finds you.
If you're navigating a merger or acquisition, this becomes even more critical. Buyers often inherit the seller's sales tax liabilities, and a nexus questionnaire received during due diligence can significantly impact deal terms. Understanding your full exposure before closing protects both parties.
You Have More Options Than You Think, But Only Right Now
Getting a nexus questionnaire doesn't mean you are in an audit. It means you face a decision. The most successful businesses pause and get the right advice first. They understand all their options before the state takes those options away.
Here's what we know from working with businesses in exactly this situation across all 45 sales tax states: the window between receiving a questionnaire and losing your best options is narrow. VDA eligibility, penalty waivers, limited look-back periods. These aren't theoretical benefits. For a business with even modest sales tax exposure, the difference between proactive resolution and reactive compliance can easily reach tens of thousands of dollars.
The questionnaire in front of you is asking simple yes/no questions. But the right answer for your business depends on factors that form can't capture: your actual nexus footprint, your historical exposure, your VDA eligibility in this state and others and the specific way this state treats questionnaire responses vs. audit notices.
That's not information you should guess at. And it's not something a general accountant or bookkeeper is equipped to evaluate. State revenue departments update their contact rules, threshold definitions and VDA disqualifiers constantly.
The Sales Tax People work with businesses exactly at this stage to help you understand your options before submitting a response. A consultation gives you clarity on your current standing and your best path forward.
Will you let a generic form dictate your company's financial future, or will you take control of the narrative before the state does?
Schedule a free "What's Next" call and talk to a real sales tax expert who can help you figure out your next move before the deadline passes.
People Also Ask
A nexus questionnaire — sometimes called a business activity questionnaire, business activity survey, or tax filing determination form — is a document sent by a state department of revenue to a business it believes may have a tax filing obligation in that state. The questionnaire asks a series of questions about the business's activities in the state: whether it has employees, contractors, inventory, offices, or customers there; whether it makes sales into the state above certain thresholds; and what types of products or services it sells. The state uses the answers to determine whether the business has nexus — the legal connection that requires it to register, collect sales tax, and file returns. A nexus questionnaire is not a routine administrative form. It is the beginning of a formal state inquiry and should be treated accordingly.
States send nexus questionnaires when their data systems identify a business that appears to have a tax filing obligation but is not currently registered or filing. The triggers that prompt a questionnaire include cross-referencing payroll tax registrations against sales tax accounts — a business registered for payroll in a state but not for sales tax is a common flag — data shared by marketplace platforms and payment processors, business license and Secretary of State registrations, tips or complaints from competitors or customers, and inter-agency data sharing programs between states. In 2026, states are increasingly using AI-driven matching tools to identify non-filers at scale, which means the volume of nexus questionnaires being sent is higher than at any point in recent history. Receiving one means the state already has reason to believe you have a connection to their jurisdiction — the questionnaire is how they confirm it.
In most states, yes — nexus questionnaires typically include a response deadline and are accompanied by language indicating that failure to respond may result in the state making its own determination about your filing obligations. Ignoring a questionnaire does not make the state's interest in your business go away; it typically escalates it. However, being required to respond does not mean you should fill out the form immediately, without review, and without understanding what your answers will trigger. The questions on a nexus questionnaire are carefully worded, and the answers you provide — once submitted — become part of the state's official record. Responses that are inaccurate, incomplete, or that misapply technical tax concepts can establish nexus you did not actually have, create admissions that open up longer audit periods, or inadvertently waive protections you were entitled to claim.
Ignoring a nexus questionnaire typically makes the situation significantly worse. Most states treat non-response as confirmation that the business has something to hide — and will escalate from a questionnaire to an audit notice or a direct assessment based on their own estimate of what you owe. Because you did not respond, the state may apply a worst-case estimate of your liability and issue a deficiency notice. That notice then becomes your official liability unless you respond and dispute it within a strict appeal window. Additionally, ignoring a questionnaire does not pause the clock on penalties and interest — if the state determines you had a filing obligation going back several years, those liabilities continue to accrue. In some states, non-response can also extend the lookback period the state is entitled to examine, removing protections that would otherwise have limited your exposure.
Nexus questionnaires typically ask about the nature and extent of a business's connection to the state across several categories. Physical presence questions cover whether the business owns, leases, or uses any office, warehouse, retail location, or storage space in the state; whether it has employees, contractors, or sales representatives working there; and whether it owns or leases equipment or vehicles in the state. Sales activity questions cover the volume and type of sales made to customers in the state, whether those sales exceed the economic nexus threshold, and what products or services are being sold. Digital activity questions — which have become more prominent in recent years — ask about whether the business places cookies or apps on devices in the state, uses targeted advertising, or provides digital services to in-state customers. Many questionnaires also ask about related entities, affiliates, and prior tax registrations or filings in the state.
In most states, no — and this is the most critical thing to understand about a nexus questionnaire. A Voluntary Disclosure Agreement is available only to businesses that come forward before the state contacts them. Once a state sends a nexus questionnaire, it has made first contact — and that contact typically disqualifies the business from participating in the VDA program in that state. This is why the article says to stop before filling out the form. If you have historical exposure in the state — unfiled returns, uncollected tax, years of taxable sales without registration — and you respond to the questionnaire and confirm nexus, you will owe the full liability without access to the penalty relief and limited lookback period that a VDA would have provided. If you receive a nexus questionnaire and have reason to believe you have unaddressed historical exposure, the first call you make should be to a SALT specialist — not to the department of revenue.
Yes — in almost every case. The questions on a nexus questionnaire are drafted by state tax attorneys and auditors who know exactly which answers create filing obligations, which establish prior period exposure, and which waive protections like Public Law 86-272 that might otherwise have limited your liability. Most business owners and finance teams do not have the technical knowledge to answer these questions with the precision the state is looking for — and once the questionnaire is submitted, the answers become part of the official record and are very difficult to walk back. A SALT professional or tax attorney can review the questionnaire in the context of your actual business activities, identify which questions require careful framing, assess whether you have historical exposure that needs to be addressed before responding, and determine whether there are protections or programs available to you that responding too quickly might foreclose.
