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Short answer
Usually yes, if the company has an office, employees or property in another state. That counts as “transacting business” there, so the company registers as a foreign corporation in that state, appoints a registered agent and files that state’s yearly report too. Selling online to customers in a state usually does not require registration by itself.
How this tool works
Each state defines “transacting business” in its own law. This tool uses the common tests. We check your exact case before filing.
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Sources
Updated October 30, 2026. General information, not legal or tax advice.
Questions founders ask
The state can charge fees and penalties, and the company may not be able to sue in that state’s courts until it registers.
Often yes for registration, and almost always for payroll tax. Check that state’s rules.
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