D.C. Code § 47-863
Application of 14-307: Section 1304 of D.C. Law 14-307 provided: "Sections 1302 and 1303 shall apply as of October 1, 2002."
Mayor authorized to issue rules: Section 6 of D.C. Law 9-56 provided that the Mayor shall, pursuant to subchapter I of Chapter 5 of Title 2, issue rules to implement the provisions of the act.
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 15(b) of D.C. Law 14-282 provided: "Sec. 15. Applicability. Section 11(1) shall apply as of October 1, 2001."
Applicability and expiration of subtitle EE of title I, §§ 1261 to 1265, of D.C. Law 16-33: Sections 1263 and 1264 of D.C. Law 16-33, as amended by section 5(g) of D.C. Law 16-191 and D.C. Law 17-219, § 7068(c), (d), provided:
"Sec. 1263. Applicability; conditional effect.
"(a) Section 1262 shall apply for taxable years beginning after September 30, 2005."
"(b) Repealed.
"(c) Repealed.
"Sec. 1264. Repealed."
Applicability and expiration of subtitle KK of title I, §§ 1295 to 1300, of D.C. Law 16-33: Sections 1298 and 1299, as amended by D.C. Law 17-219, § 7068(l), (m) provided:
"Sec. 1298. Conditional applicability.
"(a) Sections 1296 and 1297 shall apply for taxable years beginning after September 30, 2005.
"Sec. 1299. Repealed."
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 tax 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.
Applicability of D.C. Law 20-61: Section 11001 of D.C. Law 20-61 provided that, except as otherwise provided, the act shall apply as of October 1, 2013.
Section 3 of D.C. Law 19-165 was repealed by D.C. Law 20-61, § 7322.
Section 2 of D.C. Law would have deleted "in whole or in part" following "50%" in (a)(1A)(A)(iii)(I) and (a)(1A)(B)(ii); added (a)(1B); rewritten (a)(2); added (a)(2A); added (b-1); rewritten (c), (d), (e), and (f); repealed (f-1); added (f-2); and would have rewritten (g), (h), (i), (j), and (k).
Applicability of D.C. Law 20-105: Section 3 of D.C. Law 20-105 provided that the act shall apply as of October 1 of the fiscal year in which it is funded and included in an approved budget and financial plan, as certified by the Chief Financial Officer to the Budget Director of the Council in a certification published in the District of Columbia Register.
Applicability of D.C. Law 20-117: Section 12(b) of D.C. Law 20-117 provided that § 12(a) of the act, which amended (a)(1A), shall apply to tax years beginning after September 30, 2013.
Applicability of D.C. Law 20-117: Section 18 of D.C. Law 20-117 provided that the act shall apply as of October 1, 2013.
Section 7014 of D.C. Law 21-36 repealed D.C. Law 20-105.