Yes. States audit remote sellers, including businesses with no office, employees, or other physical presence in the state. A state may have authority to require a seller to collect and remit sales tax once the seller has economic nexus there, and tax agencies can examine whether the seller registered, reported, and paid correctly. An audit is not proof that a seller did anything wrong, but ignoring a notice or having incomplete records can make the process harder.
Key takeaways
- A state may audit a remote seller even when the seller has no physical presence there.
- Economic nexus tests and sales-counting rules vary by state; monitor sales by destination and channel.
- Audit lookback periods and record-retention rules are state-specific, and unfiled periods may be treated differently.
- Verify an audit notice, preserve records, and track deadlines before responding.
- If you find past-due tax, confirm the state’s correction or relief options before acting.
Why remote sellers face sales tax audit exposure
Remote selling does not automatically remove a business from state sales tax rules. Economic nexus is a state’s connection to a seller based on its sales or other activity in that state, rather than a physical location there. If a seller meets the state’s current nexus test, it may have to register, collect tax on taxable sales, file returns, and remit what it collected.
Thresholds and the way states count sales differ. Some rules focus on sales dollars, while other details—such as which transactions count, how marketplace sales are treated, and when an obligation begins—depend on state law and the seller’s facts. For a state-by-state overview, see List of states with economic nexus and Have states dropped the 200-transaction sales tax threshold. Do not assume a threshold or counting method is the same everywhere.
Marketplace collection does not necessarily settle every obligation. A marketplace may collect tax on sales it facilitates, while a seller may still need to assess direct sales, registration, filing, or recordkeeping duties. The exact position depends on your circumstances—confirm with the state, or talk to us and we will check it for you.
What can trigger an audit—and how states identify sellers
There is no single public checklist that predicts which online seller will be audited. Common reasons a state may examine a business include a mismatch between reported sales and information available to the state, a late or missing return, a refund or credit claim, a discrepancy between marketplace and direct-channel records, or a review of businesses operating in a particular industry. These are possible audit leads, not proof that an audit will follow.
States can identify potential obligations through information they already hold, including filed returns, registration records, marketplace-related information, and records obtained during other compliance work. An audit may also begin as part of a broader review rather than because of one specific transaction. A state can ask for records to test whether sales were correctly classified, sourced, exempted, and reported.
Physical presence is not required for economic nexus. New York’s Department of Taxation and Finance explains that nexus can arise through solicitation of sales even without physical presence, and its rules address remote sales delivered into the state. Inventory, employees, contractors, or other in-state activity can also matter under a state’s rules. For New York-specific context, see New York Sales Tax for Remote Sellers.
Which states are most likely to audit remote sellers?
There is no reliable official ranking that identifies which state is most likely to audit a particular remote seller. Audit selection practices are not a dependable public forecast, and a state’s size or reputation alone cannot tell you whether your business will be selected. A seller should instead prioritize states where its sales, inventory, people, or other activities may create obligations, and where its filings or records have gaps.
Large sales volumes, multiple sales channels, and complicated product taxability can make a seller’s compliance harder to manage, but they do not establish that an audit is imminent. States may also differ in how they administer audits, request records, and apply their statutes. For a broader overview of the process, see Sales Tax Audits in 2026.
Use the comparison below as a practical planning aid, not an audit-risk ranking. It highlights official state guidance on remote sellers, records, and audit periods; it does not predict enforcement activity.
How far back can a state audit a remote seller?
The audit period depends on the state, whether returns were filed, and whether an exception or extension applies. New York says its general statute of limitations for tax audits is three years, but that limit does not apply for periods when a return was not filed, a federal change was not reported, or a false or fraudulent return was filed to evade tax. Texas tells businesses to keep sales and use tax records for at least four years. These are state-specific examples, not a nationwide rule.
Unfiled periods deserve particular care: a seller should not assume the ordinary audit window protects periods for which it never filed. A state may also ask a taxpayer to agree to extend a limitation period during an audit. Before signing an extension or making a statement about old periods, understand what periods and issues it covers and consider getting professional help.
Keep records for at least the period required by each relevant state, and retain them longer when an audit, appeal, or other proceeding is open. New York’s recordkeeping guidance says records generally must be kept for at least three years, with longer retention possible in an audit or proceeding; Texas requires at least four years. Check the applicable state’s current instructions rather than applying one state’s retention rule everywhere.
What to do when sales cross a state threshold
Monitor sales by destination state and channel, not just total company revenue. When activity approaches or crosses a state’s current economic nexus test, verify which sales count, whether marketplace-facilitated transactions are included, what products are taxable, and when registration and collection duties begin. A threshold crossing does not necessarily mean every sale is taxable, but it can create a duty to take action.
Do not wait until year-end to review the issue. Preserve the underlying transaction data, identify direct and marketplace sales separately, and confirm the state’s registration and filing requirements. If you sell digital products or cloud services, taxability may be a separate question from nexus; see Are more states taxing digital content and cloud services now.
If you discover that you crossed a threshold earlier and did not register or collect, avoid guessing at the exposure or making an unplanned payment. The exact position depends on your circumstances—confirm with the state, or talk to us and we will check it for you. Some states may offer ways to address past-due obligations, but eligibility and terms must be verified for the specific seller and period.
How to respond to a sales tax audit notice
Read the notice carefully and note the issuing agency, tax type, periods under review, requested records, response method, and stated deadlines. Verify that the notice is genuine using contact information from the state’s official website, not only details in an unexpected message. Do not ignore it: contact the auditor or agency through an official channel if you need clarification about the request or timing.
Preserve relevant records and organize them by period and sales channel. Gather filed returns, transaction-level sales data, marketplace statements, invoices, exemption or resale documentation, payment records, and reconciliations between platform reports and accounting records. Respond to what was requested, keep copies of everything sent, and maintain a log of communications. If the request is broad or the records do not reconcile, get help before submitting an incomplete or inconsistent explanation.
Do not alter records, destroy documents, or assume that a marketplace’s tax collection resolves every question in the audit. Ask what format the state accepts and whether it needs additional information before sending sensitive files. If you disagree with a proposed adjustment, follow the state’s stated review or appeal process and deadlines.
Prepare records and address past-due tax before an audit
Good records let you explain what you sold, where it was delivered, how the sale was taxed, and why any exemption was applied. Keep transaction details, invoices, shipping or delivery evidence, marketplace reports, exemption certificates, returns, and proof of payments. Reconcile gross sales to returns and document differences such as refunds, cancellations, and marketplace-facilitated sales. New York requires records that support transactions and delivery locations; Texas says sales and use tax records must be retained for at least four years.
If you find a past-due issue, first establish the states and periods involved, the sales that may be taxable, and what tax was already collected or remitted by a marketplace. Then verify the state’s available correction, disclosure, or amnesty process and its eligibility rules. Do not assume that a program applies simply because a business is remote or because a state has announced relief. For a specific Illinois question, see Can Illinois sellers use the 2026 remote-retailer amnesty?
Addressing a problem voluntarily may affect how a state handles penalties, but it does not guarantee penalty relief or eliminate tax and interest. The right approach depends on the state, the facts, and whether the agency has already contacted the business. Sales Tax Compliance USA is a done-for-you service staffed by people who can review your sales footprint, help organize the compliance work, and check the appropriate next steps with you.
When to get help with sales tax compliance
Consider getting help when sales approach thresholds in several states, you sell through both marketplaces and your own store, you hold inventory in another state, or you are unsure whether your products or services are taxable. Help is especially useful when returns have been missed, records do not reconcile, or a state has sent an audit or registration notice. Cross-border sellers may also need to distinguish U.S. state sales tax questions from other tax obligations.
A service provider can help review where you may have obligations, register where appropriate, prepare and file returns, and organize records. No service can promise that a state will not audit you or that a particular penalty will be waived. The goal is to identify issues, make accurate filings, and respond to state requests with clear documentation.
If you have received a notice, share the notice and relevant records promptly with a qualified adviser, while observing the state’s deadlines. If you have not received one, regular monitoring is still worthwhile: a change in sales volume, channel mix, inventory location, or product offering can change the analysis.
Official state guidance illustrates why audit periods and record rules must be checked state by state.
| State | Remote-seller or nexus point | Official audit or record guidance | Practical implication |
|---|---|---|---|
| New York | The state says nexus may arise through solicitation even without physical presence; its remote-seller rules include a sales-and-transaction test. | General audit limitation is three years, with exceptions including unfiled returns; records generally must be kept at least three years, and longer in some proceedings. | Review both the nexus test and filing history. Do not assume the ordinary three-year period applies to unfiled returns. |
| Texas | Remote sellers with economic nexus have Texas tax collection and reporting responsibilities. | Sales and use tax records generally must be kept at least four years; marketplace sellers also have recordkeeping duties. | Retain marketplace and direct-channel records and verify whether the marketplace’s collection covers the sales at issue. |
| California | The state’s audit regulations address record retention and the applicable statute of limitations, including extensions by written waiver. | Records generally must be preserved for at least four years under the cited regulation. | Keep records through an open audit and understand any proposed limitation-period waiver before signing. |
Frequently asked questions
Are states auditing remote sellers for sales tax?
Yes. States can examine remote sellers’ sales tax obligations, including whether economic nexus required registration, collection, filing, or payment. A seller does not need a physical location in a state for economic nexus to apply.
What triggers a sales tax audit for an online seller?
Possible reasons include missing or late returns, discrepancies between sales records and returns, refund claims, or a state compliance review. States do not publish a dependable formula that predicts which seller will be audited, so these are possibilities rather than guarantees.
Can a state audit a business that has no physical presence there?
Yes. Economic nexus can create a sales tax connection based on a seller’s activity in a state, even without an office or employees there. The applicable test and obligations depend on that state’s current law and the seller’s facts.
How do states find out whether a remote seller owes sales tax?
States may use information from returns, registrations, marketplace-related records, and other compliance activity to identify potential obligations. They can then request transaction and business records to determine whether tax was properly collected and reported.
What is economic nexus for sales tax?
Economic nexus is a state’s basis for imposing sales tax responsibilities on a seller because of its economic activity in the state, rather than physical presence alone. States set their own tests, including rules about which sales count and when duties begin.
How far back can a state audit a remote seller?
It varies by state and circumstances. New York generally describes a three-year audit limitation but lists exceptions, including periods with no filed return; Texas requires sales tax records to be kept at least four years. Check the state’s rules for the periods involved.
Which states are most aggressive about sales tax audits?
There is no reliable official ranking of states by audit likelihood for remote sellers. Rather than relying on a reputation-based list, prioritize states where your sales, inventory, or other activity may create nexus and where your filings or records need review.
What should a remote seller do if it receives a sales tax audit notice?
Verify the notice through the state’s official contact details, note every deadline, preserve records, and organize the requested information by period and sales channel. Respond accurately, keep copies, and seek qualified help if the request is unclear, the records do not reconcile, or you disagree with a proposed adjustment.
Official sources
- https://www.tax.ny.gov/pubs_and_bulls/publications/sales/nexus.htm
- https://www.tax.ny.gov/enforcement/audit/pub-130-f.htm
- https://www.tax.ny.gov/pubs_and_bulls/tg_bulletins/st/record-keeping_requirements_for_sales_tax_vendors.htm
- https://comptroller.texas.gov/taxes/sales/remote-sellers.php
- https://comptroller.texas.gov/taxes/sales/faq/records.php
- https://comptroller.texas.gov/taxes/sales/remote-sellers-marketplace-faq.php
Related reading
- Are more states taxing digital content and cloud services now
- Can illinois sellers use the 2026 remote-retailer amnesty?
- Have states dropped the 200-transaction sales tax threshold
- List of states with economic nexus
- Our sales tax compliance services
Getting this handled
If you would rather not work this out yourself, that is what we do. We register you, file your returns and keep you compliant across every state where you have an obligation — one point of contact, one invoice. Talk to us about your situation.
Reviewed by Paul le Roux, CA(SA). Sales Tax Compliance USA handles US sales tax registration, filing and remittance for cross-border and domestic ecommerce sellers as a fully managed service.
This article is general information for educational purposes and does not constitute legal or tax advice. Sales tax rules change and depend on your specific facts. Consult a qualified tax professional about your own position.