Originally Posted by ScottGem
I'm going to disagree with you. A woman marries a man with the idea that he will support the family ans she will provide a home. I know this is a stereotype and there are other ways this can go, but this is often the case. So if the marriage breaks up, very often the wife and mother is forced to get a job without a lot of training and experience. In such a case, it is certainly fair for the father to contribute more towards the children's care.
But if we just look at the OP's specific situation, what seems to have happened here, is the father said, look, I'll pay for an attorney who will handle everything. That attorney represented his interest not the mother's and the mother wound up on the short end of the stick.
In this case, BOTH their incomes should be considered. they should each contribute the same PERCENTAGE of income towards the childrenb's care. That is the equitable arrangement. If there incomes are equal then its a wash. But if one earns more than the other, then they should contribute more and their share should be offset by what the other pays.