Louisiana
IRS Form 6166 Apostille in Louisiana
How Louisiana residents get their IRS Form 6166 authenticated for use abroad — which office handles it, what the Louisiana Secretary of State can and can’t do, timing and price.
Quick answer
There is no federal apostille office in Louisiana. Federal documents like your IRS Form 6166 are authenticated only by the U.S. Department of State in Washington, D.C. — the Louisiana Secretary of State can’t apostille them. We handle the Washington submission; you send the document by mail.
- Authenticated by
- U.S. Department of State
- Louisiana apostille office
- Louisiana Secretary of State, Baton Rouge
- Our nearest office
- Washington, D.C. (by mail)
- Price
- $299 per document, government fees included
Why living in Louisiana doesn’t change the route
This document is issued by Internal Revenue Service, a federal authority. Federal documents are authenticated only by the U.S. Department of State in Washington, D.C. — the Louisiana Secretary of State in Baton Rouge has no authority over them, and a state apostille on a federal document will be rejected abroad.
So the process for Louisiana residents is the same as for anyone else in the country: get the document to us, we hand-deliver it in Washington, and it comes back ready to use.
About the IRS Form 6166
How to apostille IRS Form 6166, the U.S.
What the Louisiana Secretary of State can do
The Louisiana Secretary of State in Baton Rouge issues apostilles for documents signed by Louisiana officials — birth, death and marriage certificates from Louisiana registrars, Louisiana state-court records, and documents notarized by Louisiana notaries. It has no authority over federal documents such as FBI reports, USCIS certificates or IRS letters.
State offices set their own procedures and fees, so confirm current requirements with the office before submitting a state document.
Getting it done from Louisiana
We serve Louisiana by mail from our Washington, D.C. headquarters, close to the Office of Authentications. There’s no need to visit an office in person.
| Destination | Route | Our turnaround |
|---|---|---|
| Hague Convention country | U.S. Department of State apostille | 10–12 business days |
| Non-Hague country | Authentication + embassy legalization | 15–17 business days |
Serving New Orleans, Baton Rouge, Shreveport, Lafayette and everywhere else in Louisiana.
IRS Form 6166 in Louisiana — FAQ
Can the Louisiana Secretary of State apostille my IRS Form 6166?
No. This is a federal document, so only the U.S. Department of State can authenticate it. A state apostille on it would be rejected abroad.
Do I have to travel to Washington, D.C. from Louisiana?
No. We handle the Washington submission for you. Most Louisiana clients send their documents by mail and receive them back by tracked courier.
How long does it take from Louisiana?
About 10–12 business days for Hague Convention countries and 15–17 for non-Hague countries including embassy legalization, plus shipping.
How much does it cost?
$299 per document for Hague countries, with government fees and U.S. shipping included; non-Hague destinations are $399 including embassy legalization.
Related: IRS Form 6166 — full guide · All documents in Louisiana · Federal vs. state apostille
Ready to start?
Order online in minutes, or call and we will walk you through it. Federal documents from anywhere in the U.S. — one flat price, all government fees included.