From what I've seen in numerous appeal cases, you ought to have some idea of how much the bills are, especially large stable amounts like the mortgage payment. If you don't even know hows much the mortgage payment is, they will find it hard to believe that you actually own it jointly and that your income and expenses are pooled. Even is almost all the money is being pooled from your husband, that's the way you have to look at it.
There are a lot of marriages where one spouse looks after paying more of the bills, but this doesn't really look all that good from an immigration context.