Alright I shall sum up the new viable and favourable policies thus far
1. Anti-monopolist Cap Rate of 10 gralat per minute levied on gang leaders of gangs with base hours of more than 5000 hours.
2. "Duty and administration" fee for trading goods of base value with a minimum of 100k gralats on buyers.
3. Area Rent for Pkers near bases during forts.
4. Land Lease fee for basing gangs with more than 5k hours of 5k gralats for holding a second base.
As you can see, there aren't any taxes here. It's all administration fee.