Hello and thank you for using Just Answer,Unfortunately yes. If someone is working in LA then they are a nonresident but because the incoem is from a physical presence in LA and from a LA source, they would have to file a nonresident tax return.
You can ask that LA waive the penalties.
Requests for waiver of the penalty must be in writing and notarized. Account should not have a past record of delinquent filings or payments (because this was a one time happening then you would be allowed). Taxpayer should be current in filing all tax returns and remitting applicable taxes. All taxes and interest must be paid in full.
You would just send in a letter with the tax and interest payment requesting that the state of LA waive the penalty based on the fact that you are generally compliant and this was a one time problem due to your not knowing that as a non resident you were required to file a LA return and pay tax on the income.
They cannot (by their own laws) waive the interest.
You may download an installment agreement from their website or contact their office at (225) 219-0102. This would allow you to pay in installments as opposed a lumpsum. Your request for waiver of the penalty would be made then.
Here is a link to the Installment Form so you can printhttp://www.revenue.louisiana.gov/forms/taxforms/19026(9_07)F.pdf
I hope this information is helpful.
Your positive rating is always thanks enough.