Contact Us Home > About > Contact Us How can we help? CSC Corptax® puts help within easy reach. Simply choose a category below to ask a question or request assistance. Someone will be in touch soon! Request a Demo Ready to see how Corptax solutions help you transform tax? See a complimentary demo tailored to your needs. Product Information Learn how Corptax products help tax departments streamline global-to-local tax. Tour software solutions covering the complete tax lifecycle. Request Support CSC Connections is your 1-stop destination for answers, peer discussions, training, news, and your primary channel to request support. Close Product Information Our Locations Chicago 222 S Riverside Plaza, Suite 2310 Chicago, IL 60606 Location Information 847.236.8000 Get Directions Buffalo Grove 2100 E Lake Cook Road, Suite 800 Buffalo Grove, IL 60089 Location Information 847.236.8000 Get Directions Dallas-Fort Worth 4400 State Highway 121, Suite 500 Lewisville, TX 75056-1171 Location Information 972.677.4200 Get Directions San Diego 13500 Evening Creek Drive N, Suite 500 San Diego, CA 92128 Location Information 858.547.4100 Get Directions Woodland Hills 21550 Oxnard Street, Suite 700 Woodland Hills, CA 91367 Location Information 818.316.2400 Get Directions CSC Headquarters 251 Little Falls Drive Wilmington, DE 19808 302.636.5400 Get Directions Learn More from Corptax Clients on Corptax Webinars Case Studies