Right, I think I have got it now!
Your DH has a credit card which he puts the things he pays for onto. He is pissed off that paying for things when he is out with you and the girls and his other 'household' expenditure is getting too high, and says he will only pay for £1200 pm on his card. The rest you have to meet.
You usually pay, out of your own income (not his BC) for all the fripperies ect!
So you pay for most of the general household stuff, bills, food, etc etc out of your income. And also you own the house. So you don't see why DH should get away with saying he will spend no more than £1200 pm on joint expenditure items!
Is that it??????