Notarization verifies who signed a document. An apostille is a government certificate that makes that notarization valid in Hague Convention countries. Authentication, also called legalization, does the same through a longer embassy chain for non-member countries. Your destination country decides which one you need.
What’s the Difference Between Notarization, Apostille, and Authentication?
Notarization verifies a signer’s identity and confirms a document was properly executed; an apostille certifies that notarization for use in one of the 120+ Hague Convention member countries through a single government certificate; authentication, also called legalization, accomplishes the same recognition for non-Hague countries through a longer chain of state, federal, and embassy-level verification.
All three terms get used loosely and interchangeably in everyday conversation, which is exactly why documents get rejected – submitting an apostille to a country that requires authentication, or vice versa, results in automatic rejection and lost processing time. To add to the confusion, some countries’ own government agencies use the word “notarization” to describe what is actually the apostille or embassy-legalization process, even though that’s a different meaning than how the term is used domestically in the U.S.
What Is Notarization?
Notarization is the first step in this sequence: a commissioned notary verifies the signer’s identity, witnesses the signing, and applies their official seal, confirming the document was executed willingly and correctly. It’s a domestic act performed under state law and doesn’t, by itself, make a document valid for use in another country.
Most documents that eventually need an apostille or authentication – powers of attorney, affidavits, corporate resolutions – have to be notarized first. To notarize documents online, you upload the document, verify your identity, and complete the signing during a live video session with a commissioned notary, typically in about 10 minutes.
Some documents skip this step entirely because they’re already official public records rather than privately executed paperwork – a birth certificate issued directly by a state’s vital records office, for example, is often eligible for an apostille without any separate notarization, since the document itself already carries the state’s own certification. A privately drafted document, like a power of attorney or a business agreement between two parties, almost always needs the notarization step first, since there’s no government office already vouching for its authenticity.
What Is an Apostille?
An apostille is a single certificate, issued by a government authority, that authenticates a notarized or certified document for use in any of the more than 120 countries that participate in the Hague Apostille Convention, a treaty the United States ratified in 1981. It replaces what used to be a multi-step legalization process with one government-issued certificate.
In the U.S., state-level documents receive their apostille from that state’s Secretary of State, while federal documents go through the U.S. Department of State. An apostille often includes a unique identification number that can be checked against an electronic registry, giving the receiving country a way to verify it’s genuine.
For state fees, issuing offices, and turnaround times, see our guide to how to get an apostille.
A birth certificate headed to Germany, a diploma headed to France, or a power of attorney headed to Japan are all straightforward apostille cases, since all three countries are long-standing Hague Convention members. The document itself doesn’t need translation for the apostille process specifically, though the destination country may separately require a certified translation once the document arrives.
What Is Authentication (or Legalization)?
Authentication, often used interchangeably with the term legalization, is the multi-step verification process required for documents headed to a country that isn’t a Hague Convention member – the United Arab Emirates is one example. Instead of one certificate, the document passes through a chain: state certification, then federal authentication, then a final review and stamp from the destination country’s embassy or consulate.
Membership changes over time, so older lists can be wrong. Saudi Arabia joined the Apostille Convention in 2022, and the Convention took effect for China on November 7, 2023 (HCCH announcement). Documents headed to either country now need an apostille, not an embassy chain.
- More steps than an apostille: typically state, then federal, then embassy-level sign-off, each a separate submission.
- Slower and more expensive: embassy involvement adds processing time and additional fees at each stage, and some embassies only accept submissions on certain days or through a designated courier.
- No single unique ID system: verification relies on each office confirming the signature and seal of the office before it, rather than one checkable registry entry.
Because each embassy sets its own rules, requirements for authentication vary far more than apostille requirements. Some countries want documents translated into the local language before submission, others require an additional notarized cover letter, and processing windows can shift with little notice. Building extra time into your timeline matters more here than almost anywhere else in the process. It’s not unusual for a first-time submission to bounce back over a formatting detail that a country’s embassy considers routine but a first-time filer has no way of anticipating.Notarization verifies who signed a document. An apostille is a government certificate that makes that notarization valid in Hague Convention countries. Authentication, also called legalization, does the same through a longer embassy chain for non-member countries. Your destination country decides which one you need.
What’s the Difference Between Notarization, Apostille, and Authentication?
Notarization verifies a signer’s identity and confirms a document was properly executed; an apostille certifies that notarization for use in one of the 120+ Hague Convention member countries through a single government certificate; authentication, also called legalization, accomplishes the same recognition for non-Hague countries through a longer chain of state, federal, and embassy-level verification.
All three terms get used loosely and interchangeably in everyday conversation, which is exactly why documents get rejected – submitting an apostille to a country that requires authentication, or vice versa, results in automatic rejection and lost processing time. To add to the confusion, some countries’ own government agencies use the word “notarization” to describe what is actually the apostille or embassy-legalization process, even though that’s a different meaning than how the term is used domestically in the U.S.
What Is Notarization?
Notarization is the first step in this sequence: a commissioned notary verifies the signer’s identity, witnesses the signing, and applies their official seal, confirming the document was executed willingly and correctly. It’s a domestic act performed under state law and doesn’t, by itself, make a document valid for use in another country.
Most documents that eventually need an apostille or authentication – powers of attorney, affidavits, corporate resolutions – have to be notarized first. To notarize documents online, you upload the document, verify your identity, and complete the signing during a live video session with a commissioned notary, typically in about 10 minutes.
Some documents skip this step entirely because they’re already official public records rather than privately executed paperwork – a birth certificate issued directly by a state’s vital records office, for example, is often eligible for an apostille without any separate notarization, since the document itself already carries the state’s own certification. A privately drafted document, like a power of attorney or a business agreement between two parties, almost always needs the notarization step first, since there’s no government office already vouching for its authenticity.
What Is an Apostille?
An apostille is a single certificate, issued by a government authority, that authenticates a notarized or certified document for use in any of the more than 120 countries that participate in the Hague Apostille Convention, a treaty the United States ratified in 1981. It replaces what used to be a multi-step legalization process with one government-issued certificate.
In the U.S., state-level documents receive their apostille from that state’s Secretary of State, while federal documents go through the U.S. Department of State. An apostille often includes a unique identification number that can be checked against an electronic registry, giving the receiving country a way to verify it’s genuine.
For state fees, issuing offices, and turnaround times, see our guide to how to get an apostille.
A birth certificate headed to Germany, a diploma headed to France, or a power of attorney headed to Japan are all straightforward apostille cases, since all three countries are long-standing Hague Convention members. The document itself doesn’t need translation for the apostille process specifically, though the destination country may separately require a certified translation once the document arrives.
What Is Authentication (or Legalization)?
Authentication, often used interchangeably with the term legalization, is the multi-step verification process required for documents headed to a country that isn’t a Hague Convention member – the United Arab Emirates is one example. Instead of one certificate, the document passes through a chain: state certification, then federal authentication, then a final review and stamp from the destination country’s embassy or consulate.
Membership changes over time, so older lists can be wrong. Saudi Arabia joined the Apostille Convention in 2022, and the Convention took effect for China on November 7, 2023 (HCCH announcement). Documents headed to either country now need an apostille, not an embassy chain.
- More steps than an apostille: typically state, then federal, then embassy-level sign-off, each a separate submission.
- Slower and more expensive: embassy involvement adds processing time and additional fees at each stage, and some embassies only accept submissions on certain days or through a designated courier.
- No single unique ID system: verification relies on each office confirming the signature and seal of the office before it, rather than one checkable registry entry.
Because each embassy sets its own rules, requirements for authentication vary far more than apostille requirements. Some countries want documents translated into the local language before submission, others require an additional notarized cover letter, and processing windows can shift with little notice. Building extra time into your timeline matters more here than almost anywhere else in the process. It’s not unusual for a first-time submission to bounce back over a formatting detail that a country’s embassy considers routine but a first-time filer has no way of anticipating.
How Do an Apostille and Authentication Compare Side by Side?
The practical difference comes down almost entirely to your destination country: Hague members get the fast, single-step apostille; everyone else needs the slower, multi-step authentication and legalization chain.
| Feature | Apostille | Authentication / Legalization |
|---|---|---|
| Used for | Hague Convention member countries (120+) | Non-Hague countries (e.g., the United Arab Emirates) |
| Process | Single certificate from one issuing authority | Multi-step chain: state, then federal, then the destination country’s embassy or consulate |
| Speed | Typically days to a few weeks | Typically weeks to months, due to embassy involvement |
| Verification | Often includes a unique ID number checkable in an electronic registry | Relies on a sequential chain of signatures with no uniform electronic verification |
Cost follows the same pattern as speed: an apostille typically costs a small state or federal fee, often under $25, while a full authentication and legalization chain can run into hundreds of dollars once state fees, federal fees, courier costs, and the destination embassy’s own legalization fee are all added together. Businesses submitting the same document type repeatedly for authentication-required countries often find it worth budgeting for a professional document-legalization service, given how easily a single misstep in the chain can send a submission back to the beginning.
Which One Does Your Document Need?
Start with your destination country, not your document type: the same power of attorney might need only an apostille for use in Germany but a full authentication chain for use in the UAE, even though the document itself hasn’t changed.
- Get the underlying document notarized if it requires a signature and isn’t already an official certified record.
- Confirm whether your destination country is a Hague Convention member on the HCCH status table or through the country’s own embassy.
- Request an apostille from your state’s Secretary of State (or the U.S. Department of State for federal documents) if the country is a member.
- Begin the authentication and legalization chain – state, federal, then embassy – if the country is not a member.
It’s worth checking this before you notarize, not after: some destination countries and receiving institutions have specific requirements for how the underlying document must be worded, dated, or witnessed, and finding that out after a notarization is already complete can mean redoing the entire signing. When in doubt, ask the receiving institution, employer, school, or government office directly what form of authentication they expect, rather than assuming based on the document type alone.
Electronic notarization now supports both paths for many document types, though it’s worth confirming with the receiving state or country that a digitally notarized document will be accepted before you rely on it for an apostille or authentication request.
BlueNotary’s remote online notarization sessions handle the notarization step in about 10 minutes, starting at $25 for one signer and one stamp, which is where this entire process actually begins.
See the full notarization process walkthrough before you start.
Not sure whether your specific document needs an apostille or full authentication? Email BlueNotary directly at [email protected] and the team will help you out.
FAQ Section
Q1. What’s the difference between notarization and an apostille?
Notarization verifies who signed a document. An apostille is a separate government certificate that authenticates that notarization for international use in a Hague Convention country.
Q2. Is authentication the same as legalization?
Yes, the terms are generally used interchangeably to describe the multi-step process required for documents headed to a non-Hague Convention country.
Q3. How do I know if my destination country needs an apostille or authentication?
Check whether the country is a current Hague Apostille Convention member on the HCCH status table. Members require an apostille; non-members require authentication and legalization instead. Membership changes: Saudi Arabia joined in 2022 and China in 2023.
Q4. Can I notarize a document online before getting an apostille?
Yes, in most cases. Many states accept electronically notarized documents for apostille processing, though it’s worth confirming with that state first.
Q5. Why would a document get rejected during this process?
Submitting an apostille to a non-Hague country, or an authentication to a Hague country, results in automatic rejection and lost processing time.
Q6. How long does authentication take compared to an apostille?
An apostille typically takes days to a few weeks. Authentication and legalization usually take weeks to months due to embassy-level processing.
