Exhibit 23 (b) INDEPENDENT AUDITORS' CONSENT We consent to use in this Registration Statement of Simmons First National Corporation on Form S-4 for the registration of 785,000 shares of common stock of Simmons First National Corporation of our report dated February 5, 1999 (March 22, 1999, as to Note 15), appearing in the Proxy Statement/Prospectus, which is part of this Registration Statement. We also consent to the reference to us under the heading "Selected Financial Data" and "Experts" in such Prospectus. /s/ Deloitte & Touche LLP DELOITTE & TOUCHE LLP Little Rock, Arkansas April 21, 1999