Exhibit 23.1

                    CONSENT OF CASTAING HUSSEY & LOLAN, LLC

   We hereby consent; (i) to the use of our name under the heading "Federal
Income Tax Consequences" in IBKC's registration statement on Form S-4 (the
"Registration Statement") and, (ii) to the filing of our tax opinion with the
Securities and Exchange Commission as an exhibit to the Registration Statement
for the registration of 1,152,528 shares of its common stock.

                                          /s/  Castaing Hussey & Lolan, LLC

New Iberia, Louisiana
November 26, 2002