Do I need to file a state tax return if I didn't earn any income in Hawaii?

No, if you didn't earn any income in Hawaii, you typically do not need to file a state tax return. Hawaii's tax laws generally follow the federal rules, meaning that if you were not a resident of Hawaii and did not have any income from Hawaiian sources, you are not required to file a state tax return. However, there might be exceptions based on specific circumstances such as having rental property or receiving certain types of income that still require you to file a return. It is always advisable to review the state's tax laws or consult with a tax professional to determine if any exceptions apply.