Basic income doesn't solve this problem. I've worked with several executives who get to decide how much they want to "appear" to make in the United States -- all the rest is hidden offshore in stocks. The stocks they own have a very low "face value" -- since their value is set by transfers from other offshore stocks set up in a maze through different countries (so the Panama revelations won't catch them.) I have literally worked with executives hiding billions. Basic income does absolutely nothing to solve the problem of opaque financial instruments (derivatives, trusts, non-profits, and charities are also used to make money disappear. But mazes of offshores seems to be preferred by the rich people I have worked with - they are legal and well understood by all the big accounting firms.)

It would be very easy to make holding such stock illegal. And, considering the cost to our society and our world, any downsides would be outweighed by the incredible gain.