D.C. Mun. Regs. tit. 17, § 612
612.1 The following fees shall be charged for trade name filings:
(a) Trade name registration application: fifty-five dollars ($55);
(b) Trade name renewal: fifty-five dollars ($55);
(c) Trade name amendment application: fifty-five dollars ($55); and
(d) Trade name cancellation: fifty-five dollars ($55).
SOURCE: Final Rulemaking published at 59 DCR 8165, 8183 (July 6, 2012).