I am about to file my taxes. Due to being a lower income earning family, my effective tax rate is usually in the negatives (e.g. -4.29%). This has been the case for most of the last decade. However, I noticed on my TurboTax summary form this year, it said my Total Tax is $0. Even in previous years with a negative tax rate I have always had a positive number for Total Tax. Has something changed? Is this going to somehow get flagged?