actually the way they describe it in those posts (Which I did read, by the way) seem to clearly point out that you DON'T have to worry about paying bills, it's simplified into the Wealth Bonus system so you don't have to take that into account. Your Wealth Bonus reflects what you can buy/do AFTER bills are taken care of.
The way I understand it, you pick your lifestyle, and then your current Wealth bonus (Be it 1 or 20) is how much money you have left over AFTER paying your bills, rent, etc, etc.
EX : My character has a Wealth Rating of 8. I have a loft, and a Motorcycle (Both on a monthly Rent). I don't have to worry about paying the Loft's rent, Electricity/cable bills, or the Motorbike's monthly bills, the Wealth 8 is for other stuff. Say I want to go see a play, Have a fancy dinner, buy cocaine, get a hooker, bribe a cop, hire a hitman, or go to hawaii for the weekend. Those are NOT allready worked into the system, and as such are additional expenses which, if they have a purchase DC of higher than 8, I would loose wealth for.
So you dont have to worry about paying mundane bills.