The following laws support the use of the ICAS:
9.1 The Civil and Commercial Code Book 3 Specific Contracts, Title 21 Bills, Chapter 4 Cheques, Section 987-1000, which specifies the conditions and methods for drawing cheques correctly as well as validity of cheques which is a civil matter.
9.2 The Offence Arising from the Use of Cheque Act B.E. 2534, which is aimed to ensure that cheques are drawn in good faith. Drawing of fraudulent cheques will result in criminal punishments, in which penalties are clearly defined.
9.3 Electronic Transactions Act B.E. 2544 and Electronic Translations Act (No. 2) B.E. 2551, which specify that the electronic data and documents shall be accepted as evidence in legal proceedings. The acts support the ICAS without the need for revisions.