GUIDE · UPDATED NOVEMBER 2026
Apostille vs. Authentication vs. Embassy Legalization
These three terms get mixed up all the time, even by the offices asking for them. Here's what each one means, which countries use which, and how to tell what you actually need before you spend time and money on the wrong one.
Why documents need any of this
A foreign government has no way to know whether a Massachusetts notary, town clerk or court clerk is real, or whether the signature on your document is genuine. Authentication solves that. It's a chain of official confirmations, each one vouching for the signature before it, until the document reaches an office the foreign country trusts.
How long that chain is depends on one question: is the destination country a member of the Hague Apostille Convention?
What an apostille is
An apostille is a single certificate, attached to your document, that confirms the signature, the signer's authority and any seal on it. It's used between countries that belong to the 1961 Hague Apostille Convention, more than 120 countries, including most of Europe, the UK, Canada, Mexico, Brazil, Japan, South Korea, India, Australia and, since late 2023, China.
One apostille is all you need. Once it's attached, the document is ready to use in any other member country, with no embassy step.
- State documents (birth and marriage certificates, notarized documents, court records, state corporate records) are apostilled by the state that issued them. In Massachusetts, that's the Secretary of the Commonwealth.
- Federal documents (FBI background checks, naturalization certificates, FDA certificates and other federal records) are apostilled by the U.S. Department of State. See Federal Documents.
What authentication and legalization are
Countries outside the Hague Convention don't accept apostilles. Instead, the document goes through a longer chain, usually called authentication and legalization:
- State certification. For a state document, the Secretary of State (in Massachusetts, the Secretary of the Commonwealth) issues a certification instead of an apostille.
- U.S. Department of State authentication. The federal government authenticates the state's signature, or the federal document itself.
- Embassy or consulate legalization. The destination country's embassy or consulate in the U.S. confirms the Department of State's authentication and stamps the document for use in that country.
Some countries add steps, such as a translation legalized by the embassy or a chamber of commerce certification for business documents. Embassy fees, forms and timelines vary widely, and they change. See Embassy Legalization.
Side by side
| Apostille | Authentication and legalization | |
|---|---|---|
| Used for | Hague Convention countries | Countries outside the Convention |
| Steps | One certificate | Usually three: state, U.S. Department of State, embassy |
| Who issues it | State Secretary of State, or the U.S. Department of State for federal documents | State, then federal, then the foreign embassy or consulate |
| Typical timing | Fast for state documents; longer for federal | Several weeks, depending on the embassy |
| Examples | Spain, Italy, Mexico, Brazil, Japan, Canada, China | United Arab Emirates, Qatar, Kuwait and others |
Why the words get confused
People often say "authentication" when they mean an apostille, or "legalization" for any of these steps. Some foreign offices say "apostille" even though their country isn't a Hague member, or ask for documents to be "legalized" when an apostille is exactly what they mean. Instructions written in another language and translated into English add to the confusion.
The most reliable test is the Hague Conference's official list of member countries. If the destination is on it, you almost always need an apostille. If not, you need legalization. When an instruction seems to contradict the list, ask the receiving office, or ask us and we'll check.
A quick way to decide
- Find out exactly which country will receive the document.
- Check whether that country is a Hague Convention member.
- Work out whether your document is a state document or a federal document.
- Check whether the receiving office needs a translation, and when it should be done.
- Note any recency rule, such as a certificate issued within the last six months.
With those five answers, the route is clear. If any are unclear, send us your instructions and we'll map out every step before you spend anything.
What about notarization?
Notarization is often the first link in the chain, not a substitute for it. A notary confirms who signed a document. The apostille or authentication then confirms the notary. Many private documents, such as powers of attorney, affidavits and letters, need to be notarized before they can be apostilled. And the notarization has to be complete and correct, or the Secretary of the Commonwealth may turn it down. See Mobile Notary.
This guide is general information, not legal advice. Requirements change, and the office receiving your document always has the final word. Boston Mobile Notary & Apostille Service is a notary and apostille service, not a law firm. We can't give legal advice or explain the legal effect of a document.
Related services and guides
Apostille Services
State and federal apostilles, handled for you.
Embassy Legalization
The full chain for non-Hague countries.
Federal Documents
U.S. Department of State apostilles.
Country Guides
Requirements by destination.
What clients say
I had a great experience with the service from start to finish. They were very easy to reach online and always responded quickly whenever I had questions or needed clarification. The whole process was straightforward and well explained, and they made sure I understood everything I needed to know. Communication and confirmations were also very clear throughout. I used their apostille service for a document that needed to be sent overseas, and they took care of everything for me. The entire process was quick, smooth, and hassle-free, which I really appreciated. Overall, I’m very happy with the service and would definitely come back in the future if I have any other documents or paperwork that need notarization or apostille. Highly recommend!
Excellent service, consistently reliable and professional. I've used their mobile notary services on several occasions, and each experience has been seamless. Responsive, punctual, efficient, and highly accommodating, particularly when working around demanding schedules and time-sensitive documents. A pleasure to work with and a service I would confidently recommend.
Boston Mobile Notary … provided excellent services that met our scheduling needs on short notice, all for a good price. The agent was very knowledgeable and provided great guidance in meeting our particular needs
From our 600+ Google reviews. Shared with first name and last initial.
Going to a country that doesn’t accept apostilles? Your document needs authentication instead: Massachusetts certification, U.S. Department of State authentication and embassy legalization. See document authentication for how it works.
Frequently asked questions
Is an apostille the same as notarization?
No. A notary confirms who signed a document. An apostille confirms the official signature on the document, such as the notary's or a town clerk's, for use abroad.
Does China accept apostilles now?
Yes. China joined the Apostille Convention in late 2023, so most U.S. documents going to mainland China now need an apostille rather than embassy legalization. Check your specific office's instructions.
Can I get an apostille for a country that isn't a Hague member?
It won't be accepted. Those countries need authentication and embassy legalization instead.
Who apostilles an FBI background check?
The U.S. Department of State, because it's a federal document. A state apostille won't work.
How do I know if my country is a member?
Check the Hague Conference's official status table, or tell us the country and we'll confirm.
Not sure which one you need?
Send us your document and destination, and we'll tell you.