I keep a monthly budget for our shared bills-mortgage, cable, electric, water, car insurance, medical. Each week I transfer my share of those payments into our joint account (I do have a separate checking and savings account. When the bill is due, I take the money and pay it. We have our own bills that we pay-we both pay our own car payments and I have a couple credit cards that I pay. Sometimes the money is tight either on one end or the other but on weeks when one of us is unable to pay thier share, we usually make it up the next week.
He does sometimes whine when he has to pay his share but I put my foot down and I always make sure that I get my share of the income tax refund