For a family of 2 adults and 2 children at what income do you make the largest tax return for 2015
It might be too late for you, but I am arguing that it doesn't make sense (at least from a tax standpoint, as long as you can have some control as to who gets paid) to be legally married in the US.
I know of a couple that followed my opinion on this, they did not get "legally" married, but are Halachically married. They had their second child in 2015. Each one of them will file 2015 taxes claiming one child. I think that might get them the maximum EIC as well as maxing out on several other items.