I filed my taxes using TaxAct. Everything looked good. Full $7500 rebate calculated correctly. Efiled. IRS website shows they adjusted my refund down by about $3500 from what I was expecting. Very annoyed right now. I am not subject to AMT, so I'll just have to wait and see what the letter says. I saw a post from another TaxAct user that even if your not subject to the AMT, you still need to submit a form with the credit showing such, and it seems Taxact does not do that. Since the credit is not subject to AMT, not sure why the form, or lack of it, would mess with my refund amount. I'm confident I'll get the money, but not happy I'm going to have to do extra legwork to get it.