My Idea, though it might be a bit extreme:
* Judge can give a fine of up to 10,000 gold
* Once the fine is issued, the amount of the fine is taken from any bonds the character may have
* If there are not enough bonds in the bank, all the bonds are taken the fine remains with an adjusted ballance
* until the fine is completely paid off, all taxes go straight to paying off the fine until the fine is completely paid off
* the judge has the option to "forgive remaining balance" on any standing fine
* the fined character has the option use gold on hand to pay towards the fine
* the fined character has the potion of requesting that his family pay towards his fine