Thanks for asking your question! I'm sorry to hear about your tax issue and I'm going to try my best to help you understand or resolve it.
Thank you for your question, and thanks for using JustAnswer.com. According to IRS
topic 503, any tax that is paid during the year for prior year returns is deductible
. So, yes - you can deduct the $4,000 you paid in state taxes for 2009 in 2012. CLICK HERE
to read about the topic on the IRS Web site.
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You should be aware that your question, as with most tax questions, can never really be answered completely...addressing all the permutations; that is because of the many assumptions that have to be made I have done my best to determine what I think you are asking and answering it in the most direct and understandable manner possible. If, however, after reviewing the questions, you have any uncertainties or further questions, please do not hesitate to ask.