EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-58428) of Southside Bancshares, Inc. and its subsidiaries of our report dated March 4, 2002 relating to the financial statements and financial statement schedules, which appears in this Form 10-K. /s/ PRICEWATERHOUSECOOPERS LLP PricewaterhouseCoopers LLP Dallas, Texas March 4, 2002