How to Attest a Document: Notary, Apostille, and Legalization

To attest a document, you have someone with legal authority confirm that a signature or the document itself is genuine. For domestic use, that usually means signing in front of a witness or a notary. For use in another country, it means running the document through a chain of government certifications that ends either with an apostille (if the destination country belongs to the Hague Apostille Convention) or with embassy legalization (if it doesn’t). Knowing how to attest a document starts with identifying where it’s going and who issued it, because those two facts determine every step that follows.

What Attestation Means

In everyday legal use, attestation is the act of witnessing someone sign a document and then signing it yourself to confirm you saw it happen. Wills, deeds, and powers of attorney often require one or two attesting witnesses whose signatures make the document legally enforceable. The witness isn’t vouching for the contents; they’re confirming the signer appeared voluntarily and seemed competent.

When people ask about document attestation for international purposes, they usually mean something broader: getting an official authority to certify that a document is authentic so it will be accepted somewhere else. Three terms come up, and they are not interchangeable.

Attestation (domestic) is a witness or authorized official, most often a notary, confirming that a signature is genuine.
Authentication is a government office certifying that the official who signed or sealed a document was authorized to do so. In the US, that’s the Secretary of State for state-issued documents or the US Department of State’s Office of Authentications for federal ones. Authentication certificates are used for countries outside the Hague Convention.
An apostille is a standardized certificate recognized by all 129 parties to the Hague Apostille Convention, replacing the longer legalization process with a single step.¹

Using the wrong one gets your document rejected, so the first thing to nail down is which one the receiving country actually requires.

Domestic Attestation: Witness or Notary

If the document only needs to work inside the United States, the process is short:

Check what the document requires. Wills in most states need disinterested witnesses who are not beneficiaries. Deeds and powers of attorney typically need a notary.
Bring valid ID. A passport, driver’s license, or state-issued ID is standard.
Sign in the presence of the attesting party. The witness or notary watches you sign, then adds their own signature and, for a notary, an official seal.

That’s the entire process for domestic use. The rest of this article covers what happens when the document has to work abroad.

Check the Destination Country First

Before you spend a dollar on fees, confirm whether the country receiving your document is a party to the Hague Apostille Convention. The Hague Conference on Private International Law maintains the official list of all 129 contracting parties.² If your destination is on the list, you need an apostille. If not, you need authentication followed by embassy or consulate legalization. Getting this wrong means starting over.

State-Issued Documents

Birth certificates, marriage certificates, death certificates, divorce decrees, and anything notarized by a state-commissioned notary follow this path:

Step 1: Get the document certified by the state that issued it. Contact the Secretary of State (or equivalent office) in that state. The office verifies that the notary or official who signed and sealed the document is registered and authorized. State fees generally run from $10 to $26 per document.
Step 2 for Hague countries: You’re finished. The state apostille is all you need. The US Department of State confirms that state-certified documents headed to Hague countries do not need a federal apostille.³
Step 2 for non-Hague countries: Send the state-certified document to the US Department of State for a federal authentication certificate, then move to embassy legalization.

Federal Documents

Documents signed by a federal official, a US consular officer, a foreign consul registered with the State Department, or a military notary go straight to the US Department of State’s Office of Authentications. Do not notarize a federal document first. The State Department warns that notarizing a federal document will make it invalid.³

To request an apostille or authentication certificate from the Office of Authentications:

Confirm your document is an original or certified copy with legible signatures, printed names, titles, and agency seals on official letterhead.
Complete Form DS-4194.
Submit the form, your documents, and the $20-per-document fee by mail or in person.⁴

Non-Hague Countries: The Full Legalization Chain

When the destination country hasn’t joined the Hague Convention, one apostille won’t work. You’ll run through a chain that ends at the destination country’s embassy or consulate:

State certification. The Secretary of State’s office in the issuing state verifies the document.
Federal authentication. The US Department of State issues an authentication certificate confirming the state seal is genuine.
Embassy or consulate legalization. The destination country’s embassy or consulate reviews the chain and attaches its own seal.

Each step has its own fee and processing time, and the steps must happen in order. The embassy won’t legalize a document that skipped federal authentication, and the State Department won’t authenticate one that wasn’t first certified at the state level.

Fees and Processing Times

The US Department of State charges $20 per document for both apostille certificates and authentication certificates.⁴ Timing depends on how you submit:

By mail: about five weeks from the date the office receives the request.⁴
Walk-in drop-off: about seven business days. You drop off documents and return to pick them up.
Same-day emergency: by appointment only, when an immediate family member abroad has a life-or-death emergency and you’re traveling within two weeks.

State apostille fees generally fall between $10 and $26 per document, with processing times from same-day to several weeks depending on the state and submission method. For a full legalization chain to a non-Hague country, plan for separate fees at the state, federal, and embassy levels and a total timeline of several weeks to a few months.

If a Translation Is Required

If the receiving country wants the document in another language, you’ll need a certified translation. The translator certifies in writing that they are competent in both languages and that the translation is complete and accurate, and signs and dates the certification with their name and address.

Have the translation notarized if notarization is called for, but leave the original document alone. For federal documents going to the State Department, notarizing the original invalidates it.³

Common Reasons Documents Get Rejected

A rejection can burn weeks. These are the mistakes that cause most of them:

Notarizing a vital record. Birth certificates and other records issued by a government registrar already carry official authority. Adding a notary seal can get them rejected.
Incomplete notarial certificates. Missing the venue, date, notary title, or commission expiration date is one of the fastest routes to a rejection.
Notarizing a federal document. The State Department warns explicitly against this; a notary stamp renders the document invalid for apostille purposes.³
Skipping a step in the chain. Sending a document directly to the State Department without state certification, or to an embassy without federal authentication, means starting over.
Old or illegible documents. Some countries only accept recently issued documents. A decades-old birth certificate may need to be re-issued as a fresh certified copy before you begin.

The pattern behind almost every rejection is the same: someone acted before confirming exactly what the destination country requires and in what order. Check the country’s Hague status, identify whether your document is state or federal, and follow the chain from there.

1
HCCH. HCCH – Apostille Section
2
HCCH. Convention of 5 October 1961 – Status Table
3
Travel.State.Gov. Preparing a Document for an Apostille Certificate
4
Travel.State.Gov. Requesting Authentication Services