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I'm 23 and filed my taxes. As I started the form it asked if someone can claim me as a dependent. I put 'Yes' because I was in school full time (2014) and I'm under 24. I filed my taxes and it went from me getting over $1,000 back to having to owe $407. The details stated, "We took away the Refundable Educational Credit because you can be claimed on someone elses taxes a dependent." Now, can my Dad still claim me on his taxes even though I already filed? And how much extra will he be getting back? Any insight and information will be appreciated. Thank you.