Delaware Code
Subchapter VIII. Returns and Payments of Tax
§ 1163. Returns by fiduciaries.

An income tax return for:

(1) Any deceased individual shall be made and filed by an executor, administrator or other person charged with the care of the decedent's property. A joint or separate final return of a decedent shall be due when it would have been due if the decedent had not died;
(2) An individual who is unable to make a return by reason of minority, or other disability, shall be made and filed by a duly authorized agent, guardian, fiduciary or other person charged with the care of the individual's person or property, other than a receiver in possession of only a part of the individual's property;
(3) An estate or trust shall be made and filed by the fiduciary thereof;
(4) Two or more fiduciaries acting jointly, may be made by any 1 of them.

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