We would get even more massive corruption almost instantly. For example, some people would lobby to get those tax-revenue intended for the basic income to be redirected to other projects. The people wouldn't fight the loss of a $1/year/person here or there. There would also be reams of special cases to give some people more and some people less. And like today, some people would continue to carve out exceptions so they didn't have to pay those taxes to feed the basic income. That money would be divvied up every way except as a basic income and people would spend all their time fighting over who got it instead of generating the value that backs it.
I don't live in the countries trying this so I can't say if it's safe to give their government that much power, but I know the US government is no where near ready for any more power than they already have.
EDIT: Fixed a typo