Apostille vs. Authentication vs. Embassy Legalization — What's the Difference?
Which one your destination country requires
In short: If your document is going to a country in the Hague Apostille Convention, you need an apostille — a single certificate that makes it valid there. If the destination is not a member, you instead need a certificate of authentication from the state, followed by legalization at that country's embassy or consulate. The Illinois Secretary of State issues both apostilles and authentications.
Which do you need?
Check whether your destination country is a Hague Apostille Convention member. If it is, an apostille is enough. If it isn't, you need authentication + embassy legalization — more steps, more time, more fees. The UAE is a common non-member example.
Key facts
- Hague member → apostille
- Non-member → authentication + embassy legalization
- Illinois Secretary of State issues both; 125+ countries are Hague members
Frequently Asked Questions
How do I know if my country needs an apostille or legalization?
If it's a Hague Apostille Convention member, an apostille works; if not, you need embassy legalization. We'll tell you which applies.
Can Illinois do both?
Yes — the Illinois Secretary of State issues apostilles and authentications; the embassy step (for non-members) happens after.