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Apostille Services In Illinois

Expedited authentication, notary & translation

Apostille Fees

Personal and Business Documents

4-14 business days*

Federal Documents

1-2 weeks or 8-12 weeks**

+ govt fees
Order now
Personal and Business Documents

1-3 business days*

Not available for Federal Docs
+ govt fees
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Same Day
Personal and Business Documents

24 hours*

Not available for Federal Docs
+ govt fees
Order now
Discounted volume rates

Priority processing

Net 30 invoicing / Designated
account manager

**1-2 weeks for Hague Countries and 8-12 weeks for Non-Hague countries

Illinois Apostille Service

When traveling to another country for anything other than a vacation, you will often need to provide the necessary documents. And each of those documents must be authenticated.

An apostille or embassy legalization is a process that verifies the authenticity of the stamps and signatures of a document. In fact, the word ‘apostille’ is French for ‘certification.’

The Hague Convention of 1961 determined that all member countries will accept the apostille process, while non-members must follow the embassy legalization process.

Don’t worry if you are unsure which process to follow; we know which countries require which authentication.

The authentication process can be tricky. In fact, acquiring an Illinois apostille can be difficult when done on your own. That is why we are here to help you.

 Apostille Service
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.

Documents We Apostille in the USA

Personal or Family Documents
  • Marriage certificates
  • Death certificates
  • Birth certificates
  • Divorce decrees
  • Single status affidavits
  • Power of attorney
  • Wills
  • Car titles
  • Adoption dossier
  • FBI records
  • Criminal history reports
  • Any notarized document
Corporate Documents
  • Certificates of good standing
  • Certificates of incorporation
  • Certificates of origin
  • Power of attorney
  • Hiring documents
  • Company invoices
  • Other business documents
Academic Documents
  • High school
  • GED
  • College diplomas
  • Report cards
  • Other various school records

Place an order to calculate your cost or talk to our experts

Let Us Handle the Illinois Apostille Process

You must follow each step of the process for obtaining apostilled documents perfectly, and all paperwork must be error-free. Even the slightest mistake can cause the apostille to be delayed or rejected.

First, you must determine if you have a state-issued document or if it is federally-issued. This will decide who you contact to receive an apostille or embassy legalization.

Examples of state-issued documents are:

  • Birth certificate
  • Death certificate
  • Driver’s license
  • Articles of Incorporation

Examples of federally-issued documents are:

  • FBI background check
  • Passport
  • Social Security information

For state documents, you will work with the Secretary of State in Illinois; and for federal documents, you must contact the US Department of State in Washington, DC.

And if your destination country is not a member of the Hague Convention of 1961, you will then contact the Embassy or Consulate for authentication.

Remember, each document must have its own apostille. So, when working on your own, you must submit an apostille application for every document that requires authentication. No blanket apostille covers several documents at once.

At One Source Process, we know the steps to have your documentation quickly and easily receive an apostille from the appropriate office. We will contact the Illinois state department, the federal department, and the Embassy or Consulate when necessary.

Our Quick and Easy Process

When applying for an apostille on your own, you must determine which governmental office to contact and submit your apostille application form. Sometimes there are several departments to work with.

We understand that you are busy. That’s why we made working with us to apostille or legalize your documents as easy as 1-2-3.

  1. To begin, simply fill out our Order Form This is where you tell us what you need and which country requires the apostille.
  2. You will then send us your original documents (or a certified copy).
  3. Once we have confirmed that all documents are correct, we will send you a payment invoice and timeline for completion.

That’s it!

You will be assigned a dedicated agent who will work to obtain your apostille. This means someone will watch your paperwork throughout the entire process, ensuring there are no problems. And if you have any questions, you can call and speak to one person instead of being passed from customer service representative to representative.

Hey Illinois! You Deserve More

At One Source Process, we like to take steps beyond the basics and offer you more than obtaining the apostille or embassy legalization for you.

Here are just a few apostille services we offer during the Illinois apostille process:

  • Review – We will review all of your documents for FREE to ensure there are no omissions or errors. We do this before we charge you anything.
  • Expedited Service – When you really need it, we offer expedited apostille service. We know that you may be in a bind and need to apostille documents as quickly as possible, and we can help you with that.
  • Translation – Many countries require your documents and the apostille translated into their language. We offer certified translation services done at the same time as the apostille.
  • Availability – We are available 7 days a week to answer any questions you may have before or during the apostille process.
  • Worldwide – If you are currently outside of the United States, we can still help you obtain the necessary apostille for your US document. Simply upload or mail us your paperwork, and we will get the apostille for you. We will send you all documents via FedEx or DHL carrier service.

No matter if you need an apostille on your birth certificate, marriage certificate, transcripts, FBI report, social security benefits letter, or even business documents… we can have it all efficiently authenticated for you.

We have been obtaining apostilles and embassy legalization since 2010. We can help you quickly and easily get the authentication. Whether you are in Chicago or any surrounding communities, we take care of the entire process for you – saving you time and hassle.

Do you need an apostille on documents issued in different states?

We are able to process multiple documents, simultaneously, in all 50 states and territories. Check out our apostille services in Texas, our apostille services in Los Angeles and our apostille services in Talahassee. You can also view our services in other states and cities here.

Embassy Legalization Services
documents verified for use in another country

Contact One Source Process Today to Get Started

Our Illinois apostille process is simple, stress-free, and will exceed your expectations; we guarantee it. We are dedicated to 100% customer satisfaction and will handle your documents with great care to ensure their safe return to you.

When you choose One Source Process for your Illinois apostille needs, you can trust that we will provide you with the highest level of service. No matter the type of paperwork you need to apostille, we have the expertise to get the job done.

For apostille services in Illinois, please contact us anytime from:

Monday-Friday 9am – 6pm EST
Saturday – Sunday 9am – 4pm EST

At our toll-free number 1-800-668-5448 or email us at

We look forward to working with you.

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

What is an Apostille ?
What Documents you can Apostille?
Can you apostille photocopies of my documents?
What is your refund policy?

Ask us anything!

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.