Another possibility is income splitting.
What ever the family income is, allow it to be spread over the members of family and then tax it that way.
I know one father that incorporated his income and made his families shareholders. He gave enough shares to each person, that they earned just enough to be exempt from paying taxes and then he paid taxes on the rest.
It allowed him to only be taxed at about $45,000, instead of the $85,000 he would have been taxed at otherwise.
Now, that’s what I call brilliant. Hopefully it passes legal muster. I personally like that thinking.