A BI is generally associated with a flat tax to pay for it. Aka everyone gets 10,000 a year tax free but after that all income is taxed at ~20% to pay for it pluss whatever else the government needs, net result increasing the BI costs everyone making over around 50k per year more money than they gain. However, the good thing is it's revenue neutral for the person near 50k. And adds 5k to someone making 25k per year so there is no disincentive to work a low paying job to like with the current social programs.