Exhibit 32.1 Certification of Chief Executive Officer of Century Business Services, Inc. This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and accompanies the quarterly report on Form 10-Q for the quarter ended September 30, 2004 (the "Form 10-Q") of Century Business Services, Inc. (the "Issuer"). I, Steven L. Gerard, the Chief Executive Officer of the Issuer, certify that to the best of my knowledge: (i) the Form 10-Q fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and (ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Issuer. Date: November 9, 2004 /s/ Steven L. Gerard -------------------------- Steven L. Gerard Chief Executive Officer Subscribed and sworn to before me this 9th day of November, 2004. /s/ Michael W. Gleespen - ------------------------------------ Name: Michael W. Gleespen Title: Notary Public & Attorney-At-Law Registered in Franklin County, Ohio No Expiration Date