I live in north carolina but sell insurance in north carolina and virginia. do I need to do state filings for both states?

[HelenaC]

Yes, generally, you’ll need to file a nonresident state return if you made money from sources in a state you don’t live in.

You must file an income tax return in Virginia if:

• you are a resident of Virginia, part-year resident, or a nonresident, and 
• you are required to file a federal income tax return, and
• you have Virginia adjusted gross income equal to or greater than Single or married filing separately $11,950 or Married filing jointly $23,900.

Some examples of income are:

• Wages or income you earned while working in that state
• Out-of-state rental income, gambling winnings, or profits from property sales
• S Corporation or partnership income
• Beneficiary income from a trust or estate
• For active duty military: non-military income earned outside your state of legal residence
• If your employer withheld taxes for the wrong state

You don't need to report interest income from an out-of-state bank account on a nonresident return.  It only needs to be reported on your federal and resident state return.

When you do your taxes with TurboTax, we'll ask you for the info we need to help you file a nonresident state return

See How do I file a nonresident state return?