All our money goes into a joint account that DH can't touch (he admits he can't be trusted). I then divide up the money to bills, mortgage, petrol, groceries and pocket money. DH loves to interfere though, refuses to look at the budget spreadsheet, but then complains when I say there is no money.

When we started off together, we had things seperate. DH would pay the rent, petrol, clothing and entertainment expenses. I would pay bills and groceries. It worked it out once and it pretty much worked out to be even, except after awhile whenever DH paid the rent, he would then ask me for money to get through the week, so I changed things.