EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in the registration statements on Form S-8, previously filed by NB&T Financial Group, Inc. on March 23, 1995, of our report dated February 5, 2003 on our audit of the consolidated financial statements of NB&T Financial Group, Inc., as of December 31, 2002 and for the year then ended which report and financial statements are contained in the Annual Report on Form 10-K for the fiscal year ended December 31, 2002. /s/ BKD, LLP --------------------------- BKD, LLP Cincinnati, Ohio March 18, 2003 70