Authentication & Legalization Services

U.S. Department of State Authentication • Embassy & Consulate Legalization • International Document Processing

California Apostille Service provides professional authentication and legalization services for U.S. documents being used internationally. We assist with California authentication, U.S. Department of State processing in Washington, D.C., and embassy or consulate legalization when required.

Requirements vary depending on the document, issuing authority, and destination country. Send us your document and tell us where it will be used. We can help identify the appropriate process before your documents are submitted.

U.S. Department of State Authentication

Certain federal documents and documents intended for countries requiring authentication may need processing through the U.S. Department of State Office of Authentications in Washington, D.C. California Apostille Service coordinates federal authentication and document processing for clients throughout the United States and abroad.

Common federal documents include FBI background checks, federal court documents, federal agency documents, certificates of naturalization, and other eligible federally issued records.

Authentication & Legalization Process

Depending on the document and destination country, the process may include one or more of the following:

1. Document Review & Notarization
   We review the document to determine whether notarization or another form of certification is required.
2. State Authentication
   State-issued or notarized documents may require certification through the appropriate state authority.
3. U.S. Department of State Authentication
   Federal documents and certain non-Hague transactions may require processing through Washington, D.C.
4. Embassy, Consulate or Other Required Legalization
   When required by the destination authority, we coordinate the appropriate final legalization step.

Documents We Commonly Process

Embassy, Consulate & International Legalization

When an Apostille alone is not the appropriate certification, additional authentication or legalization may be required by the receiving country or authority. California Apostille Service coordinates embassy, consulate, and international legalization requirements when applicable.

We also assist with specialized international document requirements, including UAE document processing and Taipei Economic and Cultural Office (TECO) authentication services. Requirements can change, so documents are reviewed individually based on their destination and intended use.

One Service From Document Review to International Use

We handle each request individually and coordinate the required steps from start to finish. Whether your document requires state authentication, federal processing in Washington, D.C., or additional international legalization, you receive concierge-level service, personal attention, and clear communication throughout the process.