I received a 2018 (final) K-1 for my mother's estate. Dates shown on the top of the form are 6/1/2018 ending 1/31/2019. Do I file this form in 2018 or 2019?

[tagteam · Accepted solution]

"Do I file this form in 2018 or 2019?"

You file it with your 2019 income tax return, based upon the (fiscal/short) tax year end of the estate.