Quick Summary
U.S. companies expanding abroad — opening a subsidiary in Mexico, registering a UAE Free Zone entity, opening a foreign bank account, signing a distribution agreement in the EU, bidding on a tender in LATAM — all need apostilled corporate documents. The two most common are the certificate of good standing and the articles of incorporation, both issued by the state Secretary of State and apostilled by the same office. Bylaws, operating agreements, board resolutions, and other internal documents need to be notarized as true copies first, then apostilled. This guide covers each document type, by-state filing process, common destination-country expectations (Mexico, UAE, Spain, Brazil, EU), and 2026 timelines.
Which Corporate Documents Need an Apostille
- Certificate of Good Standing (a.k.a. Certificate of Existence, Certificate of Status, Certificate of Subsistence) — by far the most-requested.
- Articles of Incorporation (or Certificate of Formation for LLCs) — required for entity registration abroad, opening corporate bank accounts.
- Bylaws (corporations) / Operating Agreements (LLCs) — required for governance verification in many foreign jurisdictions.
- Board resolutions / written consents authorizing the foreign transaction — required for any major foreign act (incorporating a subsidiary, signing real estate, opening accounts).
- Power of attorney to a local director or representative — see Apostille a Power of Attorney for International Use.
- Certified shareholder list / capitalization table — required by some Free Zones and EU jurisdictions for beneficial ownership reporting.
- EIN confirmation letter (IRS CP 575) — federal document, federal apostille.
- Stock certificates — for transfers of shares across borders.
- Tax residency certificate (IRS Form 6166) — federal apostille, for tax treaty claims abroad.
State vs. Federal: Which Apostille
| Document | Issuing authority | Apostille from |
|---|---|---|
| Certificate of Good Standing | State SoS (Delaware, Nevada, Wyoming, California, etc.) | Same state SoS |
| Articles of Incorporation | State SoS | Same state SoS |
| Bylaws, Operating Agreement | Internal | State SoS (after notarization) |
| Board resolutions | Internal | State SoS (after notarization) |
| EIN confirmation letter | IRS | U.S. Department of State (D.C.) |
| Form 6166 (tax residency) | IRS | U.S. Department of State (D.C.) |
| FDA / USDA / FCC certificates | Federal agency | U.S. Department of State (D.C.) |
Document by Document
Certificate of Good Standing
This is the workhorse of cross-border business documentation. It's a one-page letter from the state SoS stating that your entity is in good standing as of a specific date.
- How to get it: Order from the state SoS — most state SoSes have online portals (Delaware via the Division of Corporations, Nevada via SilverFlume, California via SoS bizfile Online).
- Filing fee: $5–$50 depending on state ($50 in Delaware, $5 in Florida).
- Validity: Foreign authorities almost always require a certificate dated within the last 3 months. Don't apostille an old one — order a fresh certificate, then apostille same-day.
- Apostille: Same SoS office authenticates its own signature, usually 1–5 business days mail or same-day at counter.
Articles of Incorporation / Certificate of Formation
The founding document filed with the state when your entity was created.
- How to get a certified copy: Order from the state SoS. They will issue a certified copy with the SoS seal.
- Apostille: Same SoS authenticates its own signature on the certified copy.
- Filing fee: Typically $20–$75 for the certified copy + the apostille fee.
Bylaws and Operating Agreements
These are internal documents — they're not state-issued, so the SoS can't authenticate them directly.
- Workflow: Have a corporate officer (CEO, secretary, manager) sign a true-copy certification in front of a notary public, attaching a clean photocopy of the bylaws / operating agreement. The SoS then apostilles the notary's signature.
- State-specific: New York, Massachusetts, Maine, Ohio, and Illinois notaries cannot certify true copies. In those states, the officer signs an affidavit attesting that the attached copy is a true and complete copy, and the SoS apostilles the notary on the affidavit.
Board Resolutions / Written Consents
Similar process to bylaws: corporate secretary signs a true-copy certification or an attestation in front of a notary, then SoS apostille.
Foreign authorities often want the resolution to specifically authorize:
- Formation of the foreign subsidiary, with named officers
- Opening of foreign bank accounts at named banks
- Appointment of a foreign representative or attorney-in-fact
- Specific monetary limits on transactions
Vague "all actions necessary" language often gets pushed back. Be specific.
EIN Confirmation Letter (IRS CP 575)
Required to open a foreign corporate bank account or register a U.S. parent as the owner of a foreign subsidiary.
- Federal apostille. Through the U.S. Department of State Office of Authentications in D.C.
- Timeline: 10–12+ weeks mail-in; 2–3 weeks via expedited courier.
- Note: If you've lost the original CP 575, the IRS will issue a 147C letter as a replacement — this is also apostillable.
Form 6166 — Tax Residency Certificate
Required for U.S. companies claiming tax treaty benefits abroad (reduced withholding on dividends, royalties, interest).
- How to get it: File Form 8802 with the IRS, pay $185 user fee, wait 60–90 days. Indicate the country and tax year on the application.
- Apostille: Federal apostille via U.S. Department of State.
- Validity: One calendar year — you have to refile every year.
State Choice Matters for Speed
Many U.S. companies are incorporated in Delaware, Nevada, or Wyoming for tax and governance reasons but operate primarily in another state. For apostille purposes, you apostille in the state of incorporation — that's where the SoS holds the records.
| State | Mail-in turnaround | Walk-in |
|---|---|---|
| Delaware | 2–3 weeks (concurrent processing available) | Same-day via "Same Day" service |
| Nevada | 1–2 weeks | Same-day in Carson City / Las Vegas |
| Wyoming | 1 week | Limited |
| California | 2 weeks | Same-day in Sacramento / LA |
| Florida | 3 weeks | None |
| Texas | Up to 25 business days | Same-day / 48-hr drop-box in Austin |
| New York | Multi-week mail | Same-day at counter |
For tight deadlines, Delaware's same-day service is the gold standard for incorporated entities.
See the apostille services hub for the full list.
Destination Country Notes
Mexico
- For setting up an S.A. de C.V., S. de R.L. de C.V., or registering a U.S. parent in Mexico's RPC: apostilled good standing + apostilled articles + apostilled bylaws + apostilled board resolution + POA to local director.
- Translation by perito traductor of the destination Mexican state.
- Filing at the Registro Público de Comercio of the state where the entity will operate.
- See Relocate Your Company to Mexico.
UAE (Dubai, Abu Dhabi)
- For Free Zone (DMCC, IFZA, DIFC, ADGM) or mainland (DED) registration: apostilled good standing + articles + bylaws + board resolution + POA + UBO declaration.
- After apostille, MoFA attestation in the UAE + Arabic translation by Ministry of Justice–licensed translator.
- Some Free Zones add an internal attestation layer.
- See Apostille for the UAE.
Spain
- For sucursal (branch) or S.L. setup: apostilled good standing + articles + bylaws + board resolution + POA to local apoderado.
- Translation by traductor jurado registered with MAE.
- Filing at the Registro Mercantil.
Brazil
- For registering as a foreign shareholder of a Brazilian Ltda. or S.A.: apostilled corporate docs + POA with specific Brazilian CPF-application powers for the local representative + apostilled passport of the U.S. signatory.
- Translation by tradutor juramentado of a Junta Comercial state.
- Filing at the Junta Comercial of the Brazilian state + RFB (federal tax) + Central Bank registration for foreign capital.
EU broadly (Germany, France, Netherlands, Portugal, Italy)
- Apostilled good standing + articles + bylaws + board resolution + UBO disclosure.
- Sworn translation into the destination language.
- Local registration: Handelsregister (DE), RCS (FR), KvK (NL), Conservatória do Registo Comercial (PT), Registro delle Imprese (IT).
China
- Since China joined Hague in November 2023, apostille replaces consular legalization. Apostilled corporate docs + Chinese translation.
- For WFOE (Wholly Foreign-Owned Enterprise) setup, registration at SAMR (State Administration for Market Regulation).
Realistic 2026 Timelines
| Project | Timeline |
|---|---|
| Good standing apostille, fast state, U.S. shipping | 3–7 business days |
| Good standing + articles + bylaws + resolution, fast state | 1–2 weeks |
| Full subsidiary setup pack (5–8 docs) for Mexico | 2–4 weeks (U.S. side) |
| Full UAE Free Zone pack, with rush federal + UAE side | 4–6 weeks total |
| Form 6166 from scratch | 3–4 months (60–90 day IRS wait + 2–3 weeks federal apostille) |
For tax treaty filings, Form 6166 is usually the rate-limiting step — apply early in the year.
Common Mistakes
- Apostilling an old certificate of good standing. Foreign authorities want it within 3 months. Always order a fresh one.
- Bringing bylaws to the SoS directly. They can't authenticate internal documents — go through the notary route.
- Vague board resolutions. "Authorized to do all things necessary" gets pushed back. List the specific acts, named officers, monetary limits.
- Apostilling articles without certifying. The state issues a certified copy with the SoS seal — that's what gets apostilled, not your founder's plain copy.
- Wrong state. Apostille goes to the state of incorporation, not where you operate.
- Federal apostille via slow mail when there's a deadline. 10–12+ weeks is the realistic standard wait in 2026.
- Forgetting the POA to a local representative. Most foreign business registries require a locally-served agent — and the POA needs the same apostille + translation chain.
- Translating before apostille. Translation last, so it covers the apostille text.
- Missing UBO / beneficial ownership documentation, which is now required across the EU and increasingly in Mexico and LATAM.
- Underestimating how many originals you'll need. You'll often need separate originals for the foreign registry, the bank, the tax office, and your own files. Each is a separate apostille and translation.
How We Help
As part of our apostille services, we handle corporate apostille packages end-to-end:
- Document audit — send us your destination country and intended use, we'll list every document you need with the right route (SoS vs. notary, state vs. federal).
- State SoS apostilles in all 50 states, with same-day options in DE, NV, CA, NY, GA, PA.
- Federal apostille for IRS, FDA, USDA, FCC, EIN documents — including 2–3 week expedited federal service.
- Remote Online Notarization for true-copy certifications of bylaws, resolutions, and operating agreements.
- Certified translations by sworn translators (Spanish, Italian, Portuguese, French, German, Arabic, Mandarin, etc.).
- U.S. domestic 2-day FedEx included. International shipping available for an additional fee.
- Coordination with foreign counsel, Free Zone agents, and PROs for the downstream attestation steps.
For multi-document packs (5+ apostilles), we offer bundle pricing — send us the list and we'll quote.
Why is a Certificate of Good Standing always rejected when it's more than 3 months old? Foreign business registries use it as proof that your U.S. entity is currently in good standing. A 6-month-old certificate can't prove what your status is today. Always order fresh and apostille same-day.
Can I apostille a printout from the state SoS website? No. You need an officially certified copy with the SoS seal — usually a separate order from the online printout.
Do I need to translate the EIN letter? Usually yes, if filing in a non-English jurisdiction. Some foreign banks accept the English EIN letter without translation — confirm with the bank.
What's a UBO declaration and do I need to apostille it? A Ultimate Beneficial Owner declaration identifies the natural persons who ultimately own or control the U.S. entity. EU jurisdictions, UAE, and increasingly Mexico require this for foreign-owned subsidiaries. It's typically notarized in the U.S. and apostilled like any other affidavit.
How long is the U.S. apostille process for corporate docs? 1–3 weeks for state documents, 2–3 weeks for federal documents (rush) or 10–12+ weeks (standard mail).
Can I apostille a digital corporate document (e.g., DocuSigned bylaws)? Most SoSes still require paper for the notary route. The notary needs to certify a paper true copy. Some states are piloting e-apostille for SoS-issued documents but very few foreign authorities accept them yet.
Setting up a subsidiary, opening a foreign bank account, or registering as a foreign shareholder abroad? Contact us or start your apostille order — we'll audit your corporate doc pack, file every apostille, and arrange certified translation.
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