Money can be generated by quantitative easing. You should study the Modern Monetary Theory. Money does not have to be taxed first to be spent. Inflation only occurs if there is too much money out there, and that can be regulated by taxation. High taxes could be imposed onto the wealthy and onto goods and practices that are not sustainable or are otherwise undesirable. Concurrent to the introduction of a Basic Income, we also need to have system change towards an economy that is not based on exploitation and violence. Low-carbon activities could be fostered, high-carbon activities could be disincentivized. With that, military spending would automatically decrease. In the end, it just depends what we want as a society, and how much we value each other and the planet.