When I file my 2016 tax return, I entered wrong payment date for fourth quarter of 2016 for California estimated tax. I paid it at Dec 2016, but entered wrong date as Dec 2017 so I didn’t receive that tax deduction from the Federal Tax in 2016. Now I amended the 2016 tax file and corrected the date by using the Turbotax. I selected "All official forms required for filling" and It printed 1040X and all other forms ( include Schedule A, B, D, forms 8949 and all state forms ) with total of 176 pages ( the original 1040 tax file was 169 pages ).
Do I need to mail the whole package (176 pages) to IRS or should I only mail the 1040X? Any other forms need to be attached to 1040X?
