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Multi-State Sales Tax Nexus Checker

Post-Wayfair, simply selling into a state can trigger a legal obligation to collect and remit sales tax — even without a single office, employee, or warehouse there. Find out where your business may have economic nexus before a state auditor does.

Important: Sales tax is not income tax. You can have sales tax nexus in a state without owing any income tax there. These are entirely separate obligations governed by different rules. Always evaluate each independently.

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Enter Your Sales Information

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This affects which states flag your product type as taxable. Services are generally exempt in most states; SaaS taxability varies widely.

Enter your gross annual sales across all states. This helps us estimate your exposure in each state.

Most states use a 200-transaction threshold in addition to the dollar threshold. Enter your total order count.

Select every state where you have an office, warehouse, employee, contractor, or stored inventory. Physical presence creates nexus automatically, regardless of sales volume.

Add up to 10 states. For each, estimate the annual sales dollar amount to customers in that state. Leave the amount blank if you are unsure — we will estimate based on your total.

Sales tax is not income tax. You can have sales tax nexus — and a legal obligation to collect and remit — in a state without owing any income or franchise tax there. These are separate obligations that are governed by entirely different bodies of law. This report addresses sales tax nexus only. Please consult a qualified tax professional for income tax nexus analysis.

Managing nexus in multiple states is complex.

Once you have nexus, you need to register with each state's Department of Revenue, collect the correct rates, file returns on schedule, and remit what you collect. In our opinion, automated sales tax software is worth every dollar once you cross two states. Our affiliate partners TaxJar and Avalara handle this end-to-end.

Explore Automated Sales Tax Filing
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Disclaimer. This tool provides general educational information based on publicly reported economic nexus thresholds as of early 2026. Thresholds and taxability rules change. Nothing on this page constitutes legal or tax advice. Nexus determinations depend on your specific facts, product classifications, and applicable state law. We recommend confirming your obligations with a licensed CPA or sales tax attorney before registering, collecting, or remitting. State LLC Service is not a law firm and does not provide legal or tax advice.
Common Questions

Sales Tax Nexus — What You Need to Know

Prior to 2018, states could only require businesses to collect sales tax if they had a physical presence there (a store, warehouse, employee, or similar). The U.S. Supreme Court's decision in South Dakota v. Wayfair, Inc. (2018) changed this. The Court held that states may require out-of-state sellers to collect sales tax based purely on economic activity in the state — specifically, sales volume and transaction count. This is called "economic nexus." Nearly every state with a sales tax adopted economic nexus laws within two years of the ruling. The most common threshold is $100,000 in sales or 200 transactions into a state in the prior or current calendar year.
No — these are entirely separate legal concepts. Sales tax nexus triggers an obligation to collect and remit sales tax. Income tax nexus triggers an obligation to file a state corporate or individual income tax return and potentially owe state income tax. A business can have one without the other. They are governed by different statutes, different agencies, and different thresholds. This tool covers sales tax nexus only.
Kansas is an outlier. The Kansas Department of Revenue has taken the administrative position that any remote seller making any sale into Kansas has economic nexus there — there is no minimum threshold. While this position has been challenged and some advisors believe it will eventually align with the national standard, as of 2026 the Kansas DOR continues to enforce this position. If you sell to any Kansas customers, in our opinion, you should factor this in and confirm with a tax professional.
Most states do not impose sales tax on pure services (consulting, legal, accounting, staffing, etc.), though a growing minority do tax certain services. SaaS is significantly more complex: some states treat it as taxable software, some exempt it, and some have created specific rules for it. States that currently tax SaaS include New York, Texas, Pennsylvania, Washington, and others. States that have specifically exempted SaaS include California and Florida (with nuances). Because SaaS taxability is evolving rapidly, this tool flags SaaS sellers in states known to tax it and recommends professional verification in all cases.
If you crossed a threshold in prior years and have not registered, you may have back liability — unpaid sales tax, interest, and potentially penalties. Many states have voluntary disclosure programs (VDAs) that allow businesses to come forward, pay back taxes with reduced or waived penalties, and start fresh on a limited lookback period. A qualified sales tax professional or CPA can help you assess your exposure and pursue a VDA if appropriate. Ignoring known nexus is rarely the right answer; states are actively auditing remote sellers.
No. Your state of formation does not affect your sales tax obligations in other states. Sales tax nexus is determined by where your customers are and how much you sell to them, not by where your LLC is registered. Forming or moving an LLC to Wyoming (or any other state) has no effect on your economic nexus obligations under Wayfair.

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