Well this is a topic that I've been pondering on for a very long time! I'd like to know your perspective views on this topic either for or against the aforementioned topic!
Well as for me, though am not a parent yet, but am a child to someone. I know the total income of my parents as well as my siblings. With that, i had to cut my coat according to my size. So with this, I think I support the idea of children knowing the total income of their parents!
Now I'd like to see a different idea from mine and I'd be glad if the mods should do the needful so that we can get different views from different people!
Thanks!!!

Depends on the job specification and child(ren) involved.

yes of course.some kids need too know why they get only 2k pocket money per month or #20 money for food everyday so they know where they r coming from n dont start comparing themselves to OBOs.

if the parents r earning millions or 6-figure,the kids dont really need to know

It depends on the child's age,then volume of income plus maturity level.
There is an amount you shouldn't mention even if the child is super matured