Subchapter I. Repeal of Prior Income Tax Law and Applicability of Subchapter; General Definitions. § 47–1801.01. Repeal of the District of Columbia Income Tax Act of 1939 for certain purposes. § 47–1801.01a. Effect of repeal or amendment. § 47–1801.02. Applicability of provisions — Taxable years. § 47–1801.03. Applicability of provisions — Returns and payments. § 47–1801.04. General definitions. § 47–1801.05. Effect of repeal or amendment. [Transferred]