5 ms·Income minus basic living expenses would be one way.by ErikVandeWater 4y agoIncome minus basic living expenses would be one way.prawn 4y agoIn Australia, there is a tax-free threshold of $18,200. Not sure about other countries.pardon_me 4y agoIMO when UBI becomes a global standard country by country the tax-free threshold should be the UBI amount.