[xfkechyk]

I think one problem with NIT is it would likely pay out annually, when income taxes are filed. That's not very helpful if you're living paycheck to paycheck. UBI can more easily dish out money on a more frequent basis. Additionally, this was already mentioned elsewhere, but, a major argument for UBI is that not having any sort of means-testing will drastically streamline the process, reducing costs and increasing efficiency. NIT still involves means-testing.