Also early filed returns have a higher chance of being audited or stopped for ID verification. If your return will have EIC and/ or the Additional Child Tax credit on it then those returns will be held by the IRS until mid February before they start processing ... so be wise ... do not be in a big hurry to file.
Also, if you do file incorrectly you will need to amend the return once the original return has fully processed and that can take 4 - 6 months to process ... so filing an incomplete return early is not doing yourself any benefit.
