To answer you seriously (and these are out of date figures from memory) that in Australia all it would take to give everyone UBI is to tax every dollar outside of that people make starting at 30%. (Currently its 19% after your first 18k. goes to 32% over 45k and 37% over 120k and 45% after that)

The positives are that

1. People can retire younger, meaning upward job mobility is greatly improved.

2. The cost of means testing, managing welfare and aged pensions and combating fraud of those systems effectively vanishes.

3. Students could afford to study full time and work only part time or not at all AND pay their rent meaning a better educated population.

4. It effectively combats the minimum wage being too low. Its ok for part time baristas to make the minimum when the govt is making sure that people are already at "survival".

5. It indirectly funds the arts. Lets be real, how many great musicians had to stop chasing their dreams because it was "practice or go to work and eat.

For example. Some guy making 100k a year and paying about $25k in tax currently. Under the 30% arrangement would pay 30k in tax, but the ubi would pay about $20k a year. So still $15k in front. I'm no accountant but I think for you to be worse off you have to be on about $200k a year or more.