I was listening to a religious radio station to a program on finances a few years back. The program said that people are, of course, commanded to tithe to the church. If you are a husband, and you want to tithe, you can and should make that decision for your family. However, if you are a wife, and you want to tithe but your husband doesn't, then you can try to change his mind, but it is his decision as to whether or not the family tithes or not.
Now, even if you believe in a hierarchy between men and women, is this sort of a conclusion required? Does "headship" translate to "final decision-making power?" These conclusions are typically drawn by Bible teachers, but I never see them actually drawn in the text of Scripture. And if, as Ephesians 5 clearly teaches, both husband and wife are enjoined to submit to one another, how is that even possible if the man always knows that if he holds out long enough, his wife is going to have to give in?