what to do with money:
for example, pay for moving your home.
you would have to pay for the distance you travel, and you will have to pay a kind of "tax" for moving to the city. the major of any city can set up a tax for moving there, which then goes to the city-fund. he can then pay ppl with this money (he can also put this to 0 if he likes to attract more ppl).
also, depending on the cash-input of the city in-game, your income get multiplied.
example: you have a income of 2g, and live in a city with 50gpt, then you would earn 2*50=100g per month. this would give the ppl living in fox-nest (the default city) and advantage and enable them to moove to another city soon
an example for earning money would be to become census officer (;-) ). he would get lets say 100g per month=term from domestic department.