For SAHMs, what is the monthly household income for you to be comfortable?

I think sometimes due to circumstances, you have no choice but to be out working. And may not always be because of income. Not everyone has the opportunity to be a stay at home mum. Also you question is very vague, because it depends on lifestyle you are comfortable with. Eg, if you want your child to grow up in a condo or landed, go to private kindergarten, have a country club membership and save enough money for retirement and Childs university education - monthly household of around 20k is comfortable. If you don't need any of that, I think around 5k take home salary suffices to be comfortable.