> State corporate or other business activity taxes can apply, if even a single employee is working in a state. In effect, if an employer did not previously have a recognized office in a state, but one employee starts working from there, this can trigger entirely new registration requirements and tax liabilities. It may be necessary to register with the secretary of state and relevant tax authorities, provide a registered agent address, and pay corporate and business activity taxes, sales taxes and employment taxes, including employee withholding. There are often state and local licenses and business permits as well.
https://www.adp.com/spark/articles/2022/06/implications-of-w...
So sure, if you’re a company doing only local sales. Or a company doing less than 3-400k of revenue a year, this is probably complicated. Once you hit ~1m in revenue, there is probably AT LEAST one other state you are paying taxes to. Adding states should already be a defined process (or being defined) and an employee moving there is only a one or two lines different.
And all states have long required employers to register with the state government for tax purposes if they employ someone working in the state, as well as comply with the state’s labor laws.
I've asked before if I can work remotely for a few weeks at a time and have been told yes, as long as I don't leave the state. In some places, just moving to a different county or city can trigger different tax requirements.