EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No. 33-1482, Registration Statement No. 33-44354, Registration Statement No. 33-74840, and Registration Statement No. 33-74842 of JMC Group, Inc. and subsidiaries on Forms S-8 of our report dated February 12, 1999 appearing in the Annual Report on Form 10-K of JMC Group, Inc. and subsidiaries for the year ended December 31, 1998. /s/ DELOITTE & TOUCHE LLP San Diego, California March 29, 1999