Exhibit 99.1






                          CERTIFICATION PURSUANT TO
                           18 U.S.C. SECTION 1350,
                           AS ADOPTED PURSUANT TO
                SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002





         In connection with the quarterly report of The Jones Financial
Companies, L.L.L.P. on Form 10-K for the year ending December 31, 2002, as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), I, Steven Novik, Chief Financial Officer of the Company, certify
to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

         (1)      The Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

         (2)      The information contained in the Report fairly presents,
                  in all material respects, the financial condition and
                  results of operations of the Company.


                                   /s/ Steven Novik
                                   ------------------------------------------
                                   Chief Financial Officer
                                   The Jones Financial Companies, L.L.L.P.
                                   March 27, 2003






                                                                Exhibit 99.1






                          CERTIFICATION PURSUANT TO
                           18 U.S.C. SECTION 1350,
                           AS ADOPTED PURSUANT TO
                SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002





         In connection with the quarterly report of The Jones Financial
Companies, L.L.L.P. on Form 10-K for the year ending December 31, 2002, as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), I, John W. Bachmann, Chief Executive Officer of the Company,
certify to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

         (1)      The Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

         (2)      The information contained in the Report fairly presents,
                  in all material respects, the financial condition and
                  results of operations of the Company.


                                   /s/  John W. Bachmann
                                   ------------------------------------------
                                   Chief Executive Officer
                                   The Jones Financial Companies, L.L.L.P.
                                   March 27, 2003