48 CFR § 32.1103 - Applicability.
The Government shall provide all contract payments through EFT except if -
(a) The office making payment under a contract that requires payment by EFT, loses the ability to release payment by EFT. To the extent authorized by 31 CFR part 208, the payment office shall make necessary payments pursuant to paragraph (a)(2) of the clause at either 52.232-33 or 52.232-34 until such time as it can make EFT payments;
(c) A contract is paid in other than United States currency (but see 32.1106(b));
(d) Payment by EFT under a classified contract could compromise the safeguarding of classified information or national security, or arrangements for appropriate EFT payments would be impractical due to security considerations;
(e) A contract is awarded by a deployed contracting officer in the course of military operations, including, but not limited to, contingency operations as defined in 2.101, or a contract is awarded by any contracting officer in the conduct of emergency operations, such as responses to natural disasters or national or civil emergencies, if -
(1) EFT is not known to be possible; or
(2) EFT payment would not support the objectives of the operation;
(f) The agency does not expect to make more than one payment to the same recipient within a one-year period;
(g) An agency's need for supplies and services is of such unusual and compelling urgency that the Government would be seriously injured unless payment is made by a method other than EFT;
(h) There is only one source for supplies and services and the Government would be seriously injured unless payment is made by a method other than EFT; or
(i) Otherwise authorized by Department of the Treasury Regulations at 31 CFR part 208.