No more private assets being built?

[Soar_Slitherine]

Income tax does in fact tax private economy income in general, not just their item sales to traders (although I remember there being an outdated tooltip somewhere in the game that claims the latter). That includes salaries paid to public workers (which end as income for the private economy - after all, the workers have to buy the stuff they spend their salary on from somebody), the hidden economy (credits boost for the first 25k population in a zone) and direct credit production by assets.

Based on checking the values on the private economy income tooltip, the total income tax raised in a zone equals ([Private economy income] - [Service tax]) * [Income tax level].