Sales tax · decision guide · October 2026
Do I need to collect sales tax?
Answer a few questions about sales into one state to see whether you are likely over its economic nexus threshold, and where to read the rule and register.
A guide, not a ruling
This page summarizes what each state tax agency (and the Streamlined Sales Tax Governing Board) publishes. It does not look anything up from a state system and does not confirm your own obligations. Rules and dollar thresholds change; use the source link on each row and confirm with the state or a tax professional before you rely on it.
Your sales into one state
What this suggests
Choose a state and enter your sales.
How the decision works
- Does the state have a sales tax? Delaware, Montana, New Hampshire and Oregon do not.
- Do you have a physical presence? Employees, property, inventory or an office can create nexus at any sales level.
- Are you over the economic threshold? Compare your sales and transactions to the state’s numbers on the nexus table.
- Do marketplace sales count? If only your marketplace sales push you over, read the state’s marketplace rule.
- Register, collect and file using the state’s own portal.
Your numbers stay in your browser. This is a screen, not advice: the measure a state uses (gross, retail or taxable sales), the period it looks at and whether “at” the threshold counts all differ. When the result says to follow up, use the source links on the other tables.
FAQ
How do I know if I need to collect sales tax?
Check whether the state has a sales tax, whether you have a physical presence there, and whether your sales or transaction count into the state pass its economic nexus threshold. This tool runs those checks against the thresholds in our data.
Do marketplace sales count toward the threshold?
It depends on the state. If only your marketplace sales push you over, the tool flags it so you can read the state’s marketplace rule.
What is a physical presence?
Generally employees, contractors, property, inventory (including stock held by a fulfillment service) or an office in the state. Any of these can create a collection duty regardless of sales.
Is my data sent anywhere?
No. The screen runs in your browser and nothing you enter is stored or transmitted.
Is this a tax opinion?
No. It is a screen against published thresholds. Measures, look-back periods and boundary rules differ by state, so confirm with the state agency or a tax professional.