Jim is spot on. However, I know many aircraft registered in the state that have never paid any taxes. I paid mine because it is the law, not because it is right or wrong not too, that is someone's opinion. (many people seem to feel cheating on your taxes isn't cheating. Again, I offer no opinion and don't want to see this thread go down that road, it wouldn't go down that way long anyway.)
At the time, the state did not have the resources to follow up on registered aircraft and make sure the taxes where paid. They probably still don't.
I was told by the state revenue officer that you can volunteer to pay your taxes at anytime and they will forgive any tardiness (steep penalties and compounding interest). However, if they catch you, big ouch!
This was quite a few years ago, so perhaps they have refined their systems, but I doubt it.
I took my build receipts and they accepted them.