D.C. Mun. Regs. tit. 16, § 3116
3116.1 The following shall be the only acceptable forms of payment of a fine, penalty, cost, or other charge imposed under this chapter or the Act:
(a) Cash;
(b) Credit Card or other electronic payment; or
(c) A personal check, company check, certified check, cashier's check, postal money order, or bank money order payable to the order of the District of Columbia Treasurer.
3116.2 A payment in the form of cash shall not be accepted by mail.
3116.3 A respondent's submission of a personal check, company check, certified check, cashier's check, postal money order, or bank money order that is returned due to insufficient funds or for any other reason, shall constitute a failure to pay and a failure to respond properly to an NOI, second NOI, or decision.
SOURCE: Final Rulemaking published at 34 DCR 5718 (September 4, 1987); as amended by Final Rulemaking published at 67 DCR 1200 (February 7, 2020).