Boat tax is based off of what they say the value of your boat is. Worth a lot u pay more, worth a little you pay less. You get the idea I'm sure. Not sure if there is some formula that is used or what though. personally mine isn't terrible but I have heard some argue it ***** here in Ky. Ky is all I have ever known so couldn't compare. I guess going from noting to paying something is gonna **** in your case.