How to Notarize and Authenticate Documents for the State of Wisconsin Secretary of State? 518-956-5673

Self-Service Guide for Wisconsin Secretary of State Document Authentication

The Secretary of State offers two types of authentication: Apostille and Certificate of Authentication. An Apostille, also known as "Hague Authentication," is only valid within Hague Convention member countries. Since Chinese consulates are currently not part of the Hague Apostille Convention, documents submitted to Chinese consulates in the U.S. must use a "Certificate of Authentication."

If you don’t have time to handle it yourself, you can contact CHV for agency services at 518-956-5673.

We provide notarization and authentication services for personal or corporate documents from all 50 U.S. states, including consular three-level authentication or Hague Apostille. Expedited processing is available, with completion in as fast as 3 business days.

In-Person or Mail-in Processing:

Wisconsin Secretary of State
Certification Desk
30 W. Mifflin St., 10th Floor
Madison, WI 53703

Website: http://www.sos.state.wi.us/apostilles.htm

Reminders for Wisconsin Document Authentication

Common documents authenticated or apostilled in Wisconsin include: birth, marriage, divorce, and death certificates; articles of incorporation; corporate bylaws; powers of attorney; diplomas and transcripts.