Compliance Watchers

Doing Business in Multiple States: What You Need to Know

5 min read · Last reviewed October 2026

Growth across state lines is a good problem to have — but every new state adds its own registration, tax, and reporting obligations.

Entity registration

Foreign qualify in each state where you're transacting business, keep a registered agent there, and file that state's annual report on its schedule.

Employees

Hiring a remote employee in a new state usually means registering for that state's payroll withholding and unemployment insurance, and following its wage, leave, and workers' compensation rules.

Sales tax

Since the Supreme Court's 2018 Wayfair decision, states can require out-of-state sellers to collect sales tax once they pass an economic threshold — commonly $100,000 in sales into the state, and sometimes a number of transactions.

Income and franchise taxes

States can tax income or impose franchise taxes on businesses with sufficient connection (nexus) there. Rules differ widely; a CPA familiar with multi-state tax is worth consulting.

Stay organized

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