T. Allen & Associates, LLC AccountantsTax & Payroll Service T. Allen & Associates, LLC Visit Website 2535 Bethany Road, Suite 200 Sycamore, IL 60178 (815) 895-2132 (815) 895-5198 (fax) About About Our firm provides outstanding service to our clients because of our dedication to the three underlying principles of professionalism, responsiveness and quality.