Quoting Crazyhazel89:" i thought so.... i told my so that we would split the money we got back for our daughter and he is trying to get me to split my WHOLE tax return."
If your income was less than 13,980 , then you would have qualified for the EITC on your own. If it was more than that but less than 36,920, then you only got the credit because you claimed her as a dependant. Logically speaking, if you got the money just because you claimed her, that would fall under your agreement with him to split the money you get back from her.
Source link: http://www.irs.gov/Individuals/EITC-Income-Limits,-Maximum-Credit--Amounts-and-Tax-Law-Updates
*ETA the first amounts I posted were for next year, I changed them to the 2012 figures