Taxing is called levying on Batheo. It is done through the Assembly. The amount of Drachmas you gain from Levying is based on the total level of all your Cottages, Tax Office(s), as well as the Military Ambitions technology of your League and the the prosperity of your area. Morale also plays a part in the number of Drachmas you recieve.
There is chance of recieve ten gold at certain odds. The Mint can increase these odds.
Levies are refreshed daily at 05:00 server time.