got audited for 2011 taxes, sent in the information they asked for. Havent heard from them on the issue. I filled head of household for the address we reside at claimimg step-children. Spouse and I thought it was cause the children but figured out that on her paper work she was also filed as head of household with no dependants. Can this be the real reason why i got audited and how can i go about it with the IRS to stop collecting on me?!