Jennifer B. Wozny - Cornerstone Tax Service, Inc., in Frankfort, IL, is the area's leading tax preparation specialist serving Frankfort, Mokena, New Lenox, Tinley Park and surrounding areas since 2015. We offer business and personal tax preparation, payroll services, bookkeeping, sales tax, and more. For all your tax preparation needs, contact Cornerstone Tax Service, Inc. in Frankfort and Jennifer B. Wozny and her team will help take care of you!