- Fiduciary reporting
A fiduciary income tax return is used to report the income of estates and trusts, including that of electing small business trusts. Fiduciaries can choose to follow a calendar or fiscal year. Estates and trusts that follow a calendar year must file their tax returns by mid-April; the specific date in 2012 is April 17. Trusts and estates that follow a fiscal year must file Form 1041 by day 15 of the fourth month following the end of each fiscal year.