Please, You have no idea about Trust returns and who cares that your username ended in MT. That's a vague reference. You thought I was talking about 1040s. If you don't know the answer don't pretend and look it up and then say did you look at the link I posted? Btw, didn't you post the info below which clearly lists when you need to file? I don't know why this forum is full of complete Aholes who are not here to help but give out sarcastic responses to questions. If you don't want to help then don't answer and certainly don't pretend to know only to look up the info on google. That's ridiculous. I did that all before you responded with your sarcastic responses. There is no way for me to know why Pro Series does not support state filings for Trust returns asshat. That's why I asked. 

You know not everything is in that program, right? And it seems you are looking for a form that doesn't exist. Did you read the info I provided? That's why I gave the links.

"The fiduciary of a resident estate or trust must file a Form FID-3 (Montana Income Tax Return for Estates and Trusts). The fiduciary of a nonresident estate or trust must file a Form FID-3 (Montana Income Tax Return for Estates and Trusts) if the estate or trust receives Montana source income or if at least one of the beneficiaries is a resident of Montana during the tax year. A return is not required if the total income of the estate or trust is less than $2,580."

...

"The 2021 Form FID-3 must be filed for the calendar year 2021 or the fiscal year beginning in 2021."

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"Unless the tax return is filed electronically, a fiduciary must include a complete copy of federal Form 1041 and all related forms and schedules."