CT Corporation vs CSC — The #1 vs #2 Registered Agent Showdown
Comparing the two largest registered agents in America — CT Corporation and CSC. History, pricing, clients, and California locations.
The Biggest Names in Registered Agent Services
CT Corporation and CSC are the two largest registered agent companies in the United States. CT Corporation, founded in 1892 and owned by Wolters Kluwer, serves 70% of the Fortune 500. CSC, founded as Corporation Service Company, serves the vast majority of large corporations in some capacity. These are the heavyweight champions of the registered agent industry.
Both charge premium prices. CT Corporation is cited at approximately $436/year, with plans up to $678+. CSC charges approximately $299+ per year. Neither is a budget option — they compete on reputation, scale, and service depth rather than price.
How It Works
Step 1 — Submit Your Documents
Tell us which agent — CT Corporation or CSC — and upload your documents.
Step 2 — We Route to the Correct City
CSC goes to Sacramento. CT Corporation goes to Glendale. We handle both through our California network.
Step 3 — Proof of Service
Court-ready Affidavit of Service for whichever agent is served.
Registered Agent Service of Process
$85
Flat Fee · No Tiers
- Service at any major California registered agent (CSC, CT Corporation, SunDoc, ZenBusiness, etc.)
- Licensed & Bonded — Sacramento County Reg #024-027
Frequently Asked Questions
Which is larger — CT Corporation or CSC?
CT Corporation claims to serve 70% of Fortune 500 companies. CSC claims relationships with 90% of Fortune 500 in some capacity. By most measures, they are the #1 and #2 registered agent companies in the United States.
Which is more expensive?
CT Corporation is more expensive. Reviews cite CT’s fees at approximately $436/year, up to $678+ for premium plans. CSC charges approximately $299+ per year. Both are significantly more expensive than mid-tier agents like RASI ($149) or budget options like CCA ($50).
Why is CT Corporation in Glendale while CSC is in Sacramento?
CSC maintains their California office in Sacramento near the State Capitol and Secretary of State. CT Corporation chose to locate in the Los Angeles area — first in Downtown LA, then Glendale as of 2021. Both are valid choices; they simply reflect different operational strategies.
Does Wolters Kluwer own both CT Corporation and RASI?
Yes. Wolters Kluwer owns CT Corporation and acquired RASI in March 2025 for $415 million. CSC is independent — not part of the Wolters Kluwer portfolio.
Ready to Get Started?
Submit your documents through our registered agent intake form. We handle pickup, personal service to the agent, court-ready proof of service — usually same-day across Sacramento County. Flat $85, no surprises.