Connecticut returns of trusts, estates or partnerships for short taxable years

(a) Where a trust, estate or partnership was not in existence for the entire 12 months of its normal taxable year, the short period for which the taxpayer was in existence during such 12 months is a taxable year for which a Connecticut return shall be filed. Examples of such short taxable years are as follows:

(1) If a partnership is terminated and completely liquidated during its normal taxable year and this results in an accounting period of less than 12 months for federal income tax purposes, such period is a taxable year for which a Connecticut return shall be filed.

(2) The first Connecticut fiduciary return of a trust or estate shall often be a short-year return, due to the choice of an accounting period by the fiduciary which is either a calendar year or fiscal year. For an estate, the first Connecticut fiduciary return covers the period from the day following the decedent's death up to and including the day preceding the start of the regular taxable year selected by the fiduciary; for a trust, the first Connecticut fiduciary return covers the period from the day the trust was established up to and including the day preceding the beginning of the regular taxable year of the trust.

(3) Sometimes the final Connecticut fiduciary return of a trust or estate shall be a short-year income tax return, due to the termination of administration of the estate, or the termination of the trust, during its normal taxable year.