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I have an individual who died November 11, 2017. The trust had to obtain a letter of administration appointing a new trustee. The letter of administration was approved on June 20,2018.  A federal ID number was obtained for a Form 1041 this July 2019.  The way I read the tax rules, the initial Form 1041 would have to be either a calendar year end or a starting period from November 11, 2017 to October 31 2018.  Fortunately, the estate did not have any income for that period.

Do I have to select a fiscal year ended October 31, or can I select the actual date the trustee was appointed on June 20 2018 and make the Form 1041 estate select a fiscal year ended May 31, 2019. 

The ID number was obtained late. I obviously cannot file a FYE October 31,2018 since it was never put on extension and it is deemed late.  What is your advice??