And, of course, TTX software does not know if you've entered everything. It's up to you to determine/know if you've entered all your income form all sources. TTX can't know what sources of income you have.
Then you walk thru all the potential Deductions&Credits options, before going thru the final error checks.
Don't attempt to file before the end of January....you may get some more tax forms in the mail you forgot to include, and they can't be slipped into a tax return you've already pushed the file/transmit button for (and, perhaps, is sitting on a TTX sever at this point, and waiting for IRS to access).
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
