Roughly ten thousand dollars a year per person total spend including all government intervention as well as cash compensation. That is assuming everyone still is motivated to create as much under the new system.

For the downvoters, current global population is 7.6 billion[0], global GDP(GWP) is 78.28 trillion USD[1]. 78.28 trillion / 7.6 billion = ten thousand three hundred USD.

[0]https://en.m.wikipedia.org/wiki/World_population [1]https://en.m.wikipedia.org/wiki/Gross_world_product