- Guilds
- Secret Societies
- Religions
- Trade
- Family Gold
- Investments
- Balancing gold/bonds carried
I'm sure I have missed (or deliberately excluded?
) some options.
And if you think that these options only enable the rich and powerful to evade taxes, you're correct. Just like in the Real World, the rich and powerful make the laws, and these laws naturally favor themselves. Besides, if it was easy to evade taxes, and everyone could do it, then no one would pay taxes, making them useless.