@Frostie's links are good, and they contain links to these other relevant topics: http://help.planets.nu/taxes http://help.planets.nu/taxes-details
There's also an online calculator to help figure out how many clans you need, how much money natives will produce, etc. https://www.vgaplanets.ca/vga-planets-calculator/#tax_happy
Show Media Item - @Frostie's links are good, and they contain links to these...