D.C. Code § 47-850.02
Application of Law 14-307: Section 1304 of D.C. Law 14-307 provided: "Sections 1302 and 1303 shall apply as of October 1, 2002."
Section 3 of D.C. Law 14-147 provided that section 2 shall apply as of October 1, 2001, except insofar as the retroactive application results in an increase of tax to the real property or owner thereof.
Section 3 of D.C. Law 17-345 provided:
"Sec. 3. Applicability. (a) Section 2(c)(1)(A) and (B), (c)(2), (e)(1)(A) and (B), and (e)(2) shall apply for taxable years beginning after September 30, 2001.
"(b) Section 2(c)(1)(C) and (e)(1)(C) shall apply as of January 2, 2007.
Applicability of D.C. Law 19-317: Section 401 of D.C. Law 19-317 provided that the act shall apply only to offenses committed on or after June 11, 2013.