Samuel R. Lolan Patrick J. Dauterive Lori D. Percle Debbie B. Taylor Katherine H. Armentor Castaing Hussey Lolan & Dauterive, LLP - ---Certified Public Accountants - -------------------------------------------------------------------------------- Charles E. Castaing, Retired Roger E. Hussey, Retired Robin G. Freyou Dawn K. Gonsoulin John G. Sarkies, Jr. INDEPENDENT AUDITOR'S CONSENT We consent to the incorporation by reference in the registration Statements on Form S-8 (File Nos. 333-28859 and 033-93210) of our report dated February 12, 1999 appearing in this Annual Report on Form 10-K of ISB Financial Corporation for the year ended December 31, 1998. /s/Castaing, Hussey, Loan & Dauterive, LLP New Iberia, Louisiana March 29, 1999 525 Weeks Street x P.O. Box 14240 x New Iberia, Louisiana 70562-4240 Ph.: 318-364-7221 x Fax: 318-364-7235 x email: chldcpa@net-connect.net Members of American Institute of Certified Public Accountants Society of Louisiana Certified Public Accountants