I wonder about this too--the tax obligations of bartering.  It does seem like a sensible direction to go in, but if the govt. is going to be there demanding cash, that will undermine the whole effort.   Unless, the government will be willing to take services in kind . . .

That is no so far-fectched.  There was a time when local towns (New England) would require, say, a certain amount of road maintenance work from male residents as a tax.  Of course, eventually, those with more cash than back muscles could pay their way out of it.  Which works, too.