The good thing is that PA does not require LLC's to file an annual report.
However, every individual must file a Pennsylvania Income Tax Return (PA-40) when he or she realizes income generating at least $1 in tax. If the business was the only income and there was a loss, then you won't need to file a PA-40. If you had a w-2 or any other source of income which withheld PA tax, you will have to file that.
