What should a small business do when a state sends a nexus questionnaire out of the blue?

What the questionnaire is actually for

States send nexus questionnaires when something suggests you may have an obligation: a customer's audit listed you as a vendor, a fulfillment provider reported inventory, a marketplace shared seller data, or your company appeared in a data-matching program. The form asks about property, employees, sales, and activities in the state, often reaching back several years, and it is usually addressed to an officer of the company. Related: Economic Nexus: A State by State Reality

It is not an audit, but it is the door to one. Your answers can establish the date nexus began, which sets how far back the state can assess. The form is typically signed under penalty of perjury. The state is not asking in order to learn about you; it already has a theory. The questionnaire is checking whether your facts confirm that theory, and how you answer determines what happens next.

Keep reading: Economic Nexus: A State by State Reality, How to Know When You Are Approaching Nexus, Registering in a New State, Step by Step. See how ShopTaxie helps you sales tax nexus tracking and filing reminders.

The first things to do, and not do

Do note the response deadline. These are typically short, and extensions are usually granted if you ask before the date passes. Do gather facts: sales into the state by year, any inventory there and when, any employees or contractors, any trade show or event attendance, and any related registrations in other states. Do not ignore it; non-response often leads the state to assume nexus and issue an assessment based on whatever data prompted the letter. Related: How to Know When You Are Approaching Nexus

Do not call the state to explain informally. Do not answer from memory. Do not fill it out the day it arrives. If your potential exposure is material, involve a sales tax professional before you write anything down. This is one of the highest-leverage moments to get advice in the whole compliance cycle, because what you say on this form cannot be unsaid, and an imprecise answer can cost more than the advice. Related: Registering in a New State, Step by Step

Answering accurately without volunteering a story

Answer every question truthfully and precisely, and no more broadly than asked. If a question asks about employees in the state, answer about employees, not about a contractor who visited twice. If a question asks for a date, give the date you can document. Attach records only where the form requires them. Accuracy is not the same as narrative; give the facts and let the form do its job.

If the exercise reveals that you do have nexus and past exposure, look immediately at whether a voluntary disclosure agreement is still available. Rules differ: in some states any prior contact from the department closes that door, while in others only an audit notice does. That window can shut quickly, which is another reason to move with advice rather than alone, and to treat the questionnaire as the start of a project rather than a form.

After you respond

Keep a complete copy of what you sent and the date you sent it. If the state follows up with a registration request or an assessment, respond on time and consistently with what you already said. If you clearly have nexus, register prospectively while the rest is sorted out; the sooner collection starts, the smaller the uncovered period grows.

Then ask why this state found you and whether the same fact pattern exists elsewhere. A questionnaire from one state often exposes a gap that other states could find with the same data. Fix the process: add inventory locations, employee work states, and event attendance to your nexus tracker alongside sales data, so the next questionnaire, if one comes, contains nothing you did not already know. Related: Multi State Selling Without the Panic