<prompt> Human: I did my taxes myself this year and made a silly mistake. My son is 30, but I forgot to click the box this child is NOT a dependent . My status should have been head of household with qualifying relative, but due to my mistake, its head of household with dependent. Craigs tax preparer called us today and said his return failed to go through because someone claimed him so the preparer checked the box yes, I can be claimed as a dependent by someone else and my son is getting only a 21 dollar refund.Due to my mistake, should I amend? Mine is already filed and accepted, and my sons got filed and accepted an hour ago. Should I still amend? If i do, then my son needs to amend also. Or should I leave everything as is?  <response>: You both need to amend your returns. 