Answer:
The official government documents which one is required to fill out when they are paying their taxes are called Income Tax forms. During 2017 and earlier years people were required to file IRS form 1040, 1040A and 1040EX. But from the tax year 2019, only form 1040 is to filled . Most of the cites and states create their tax forms which are mostly modeled on the federal tax forms.
The deadline for filing your tax reforms is April 15, 2019. The extension provided an extra six months to file it.