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Document Apostille Services

Embassy Legalization & Attestation Services

Expert Document Legalization for all Non-Hague Convention Countries

Legalization Fees

Standard Full Legalization

10-12 weeks*

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*** Plus govt/embassy fees
US State DEPT & Embassy

8-12 weeks*

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*** Plus govt/embassy fees
Discounted volume rates
Priority processing

Net 30 invoicing / Designated account manager

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Consulate Attestation Services

Embassy legalization services involve authenticating your legal documents at an embassy in the US to verify their validity for use in another country. You may need consular authentication services if you are getting married in, are seeking employment in or plan to move to another country. Corporate documents may include certificates of incorporation, certificates of good standing or others.

The embassy authentication process can be complex; missteps can result in rejections and frustrating delays. The process depends on whether the country you need documents certified for is a member of The Hague Convention of 1961. In countries that follow this uniform process, documents may be apostilled to verify their authenticity.

For non-Hague Convention countries, the process depends on whether the documents you are working with were issued by a state government or by the U.S. government. State-issued documents such as birth or death certificates, driver’s licenses, divorce decrees, articles of incorporation and other records require state certification first, before being certified by the U.S. Department of State, and finally receiving an embassy certificate. Federally issued records — such as Social Security records, FBI background checks, Certificates of Naturalization and other federal documents — follow a different legalization process.

Consulate Attestation Services
Apply online
Submit our form online and calculate an estimated cost immediately. We will also review a scan of your documents for any errors and let you know ASAP if additional steps are required.
Send us your documents
No need to make an appointment or go to a physical location. Just mail us your documents through a secure tracked shipping service (FedEx, DHL, or UPS). In some cases we may not even need the physical copy!
Receive your documents
Once completed, your apostilled/legalized documents will be shipped to you via FedEx or DHL and will arrive at your doorstep. Whether in the US or Worldwide, we’ll get your important documents to you wherever you may be.

Place Order to get your cost or talk to our experts

One Source Process Provides a Range of Consular Authentication Services

One Source Process, headquartered in Washington, D.C. and with locations in New York, Houston, Los Angeles, Chicago and San Francisco, helps clients by ensuring the correct documents are presented for embassy legalization the first time and that the correct process is followed. When you choose our embassy legalization services, you can be confident your document(s) will be verified as quickly as possible.

  • For Hague Convention countries, One Source Process provides apostille services, including evaluating and confirming document seals, stamps and signatures so documents can be submitted to the U.S. State Department or Secretary of State’s office to be apostilled. We handle the work of preparing and filing the apostille embassy paperwork and obtain the apostille for our clients.
  • For other countries, One Source Process helps clients navigate the embassy authentication process by confirming and obtaining state or federal certifications so the documents can be submitted to the embassy for legalization.
Embassy Legalization Services
documents verified for use in another country

Why Use Us for Embassy Attestation Services?

Choosing One Source Process for embassy legalization services takes the stress and hassle out of embassy document attestation, so you can focus on preparing for your future stay or move to another country.

  • We offer document authentication, apostille and embassy/consular legalization services in all 50 states.
  • With a network footprint spanning the U.S. and extensive knowledge and experience in this arena, we can save you both time and money.

Our extensive network, commitment to speedy service and attention to detail make us the best choice for these and many other services. Click here to learn more about the embassy/consular legalization process. Once you’re ready to get started, complete an online Order Form. Still have questions? Contact us to learn more!

Do you need documents verified for use in another country?

One Source Process can navigate the red tape and handle the entire apostille, consular legalization and embassy authentication process for you with ease. We understand how complicated these processes can be, and we have the expertise needed to handle them as quickly and painlessly as possible for you. When you turn to us, you can be sure that we will save you time and stress thanks to our comprehensive knowledge and capabilities. We take pride in our ability to provide excellent customer service in every facet of what we do.

Testimonials from real clients

Don Pelletier
Broker & Real Estate Consultant
I highly recommend One Source Process for all of your document legalization needs. I will recommend them to my colleagues, friends, and incoming employees for overseas employment. They tackled two complex problems for me with ease. They communicated well and addressed all my concerns in a prompt manner through email and phone calls. If you ever need document legalization services, call no one else, I won’t.
The Don Pelletier Group, Inc
Holly Webb
Personal Assistant
We have used a few different process servers and no one has provided the level of customer service that One Source Process has. They are very reliable and they communicate every step of the way. Alex and Brandon have been a huge help and they always take their time to understand our needs. We look forward to working with One Source Process for a long time
Schoppl Law
Bryan Cosgrove
Personal Assistant
Professional and efficient - Having not been through the Apostille Service previously, we were guided and taught what we were doing by extremely professional and courteous individuals. We couldn't be more pleased at the efficiency and the speed at which they were able to get the job done. The final product was accepted by the bank and the beneficiaries of the estate received their funds, everyone was happy. Thank you, One Source Process, Inc.
The Law Offices Of George Castrataro

Common questions about Apostille and Legalization

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Our CEO Brandon Yoshimura and Director of Operations Danny Koo.

Ask us anything!

    CEO Brandon Yoshimura (left) and Director of Operations Danny Koo (right) outside of our office in Washington, DC.