You have to pay for UBI somehow. You basically have two options: pay for it through taxes, or pay for it by printing money. If you rule out the second opti

You have to pay for UBI somehow. You basically have two options: pay for it through taxes, or pay for it by printing money. If you rule out the second option because you don't want hyperinflation, then you have to pay for it through taxes. Then it's a simple exercise: how much can you increase taxes to pay for UBI? You can't increase taxes above 100%, so UBI has to be less than the average per-person income, and we still need to fund defence and other essentials, so it has to be significantly less.