Quick Answer
Yes — the four largest U.S. brokerages — Fidelity, Charles Schwab, Vanguard, and Interactive Brokers — all accept ITIN. Fidelity and Schwab are most accessible for U.S. residents. To open an account:
- Start the online application and enter your ITIN where it asks for an SSN.
- If the online form rejects your ITIN, call the brokerage directly or request a paper application — this almost always works.
- Fund the account via ACH transfer from your ITIN-accepting bank account and begin investing.
Can I open a brokerage account with an ITIN?
Yes. There is no law preventing ITIN holders from investing in the U.S. stock market. Most major brokerages accept an ITIN as a valid tax identification number. The IRS requires brokerages to collect either an SSN or an ITIN for tax reporting purposes — your ITIN satisfies that requirement.
Some online applications default to an SSN field and may not clearly show an ITIN option. If you hit that wall, call the brokerage directly or submit a paper application — this almost always works.
Which brokerage is best for ITIN holders?
All four major brokerages accept ITIN, but they differ in how smooth the online application process is and what documentation they require. Fidelity is generally the most flexible for U.S. residents; Schwab is strong for in-person applications. The comparison below covers each broker's ITIN acceptance, application method, and key notes.
| Brokerage | Accepts ITIN? | How to Apply | Notes |
|---|---|---|---|
| Fidelity | Yes | Online or paper | Most flexible for U.S. residents; accepts ITIN for taxable accounts and IRAs |
| Charles Schwab | Yes | Online, branch, or international portal | International account option at international.schwab.com for non-U.S. residents |
| Vanguard | Yes | Paper application preferred | Online application may not accept ITIN — call 800-662-7447 if needed |
| Interactive Brokers | Yes | Online | W-8BEN required for nonresident aliens; no minimum for cash accounts |
Does Fidelity accept an ITIN?
Yes. Fidelity accepts ITIN for most account types, including taxable brokerage accounts and Roth IRAs. The online application includes a field for Tax Identification Number where you can enter your ITIN. Fidelity may apply 24% backup withholding on dividends and proceeds if your ITIN cannot be verified against IRS records — make sure your ITIN is current before applying. See our Fidelity Roth IRA with ITIN guide for step-by-step details.
Does Charles Schwab accept an ITIN?
Yes. Charles Schwab accepts ITIN for U.S.-resident accounts. If you live outside the U.S., Schwab offers a dedicated international account at international.schwab.com, which is designed for non-U.S. residents and requires a W-8BEN form. U.S. residents with an ITIN can open a standard account online or at a branch.
Does Vanguard accept an ITIN?
Yes, though Vanguard's online application may not accept ITIN without additional steps. If the online form rejects your ITIN, call Vanguard at 800-662-7447 or request a paper application. Vanguard is best known for low-cost index funds and is a strong choice for long-term passive investors. Note that Vanguard is transitioning some account types to its brokerage platform — confirm account availability when you call.
Does Interactive Brokers accept an ITIN?
Yes. Interactive Brokers (IBKR) accepts ITIN through its online application. Nonresident aliens must complete a W-8BEN form to certify their foreign tax status. IBKR has no minimum deposit for a basic cash account and offers access to global markets, making it a good option if you want to invest in international stocks.
What's the difference between opening with an SSN vs an ITIN?
For most brokerage purposes, your ITIN functions identically to an SSN. You use it for tax reporting (1099-B, 1099-DIV), backup withholding certification, and IRA contribution tracking. The key difference is that ITIN holders cannot claim certain tax credits. One practical difference: some automated online applications default to SSN format and may need a phone call to process an ITIN application.
Do I fill out a W-8BEN or W-9?
It depends on your tax residency status. If you are a U.S. resident alien (you meet the IRS substantial presence test), you fill out a W-9 and provide your ITIN. If you are a nonresident alien, you fill out a W-8BEN, which certifies your country of tax residence and may entitle you to reduced withholding under a tax treaty. Most long-term ITIN holders in the U.S. are resident aliens for tax purposes.
What documents do I need to open a brokerage account with an ITIN?
Have these ready before you start the application: your ITIN, a government-issued photo ID (passport, consular/matricula ID, or state ID), a U.S. mailing address, and a recent proof of address such as a utility bill or bank statement. Some brokerages also ask for employment information and the source of your initial deposit.
Frequently Asked Questions
Can I open a brokerage account with an ITIN instead of an SSN?
Yes. Fidelity, Charles Schwab, Vanguard, and Interactive Brokers all accept ITIN as a valid tax identification number. Some brokerages allow online applications with an ITIN; others may ask you to submit a paper application or visit a branch.
Which brokerage is easiest to open with an ITIN?
Fidelity is generally considered the most ITIN-friendly for U.S. residents. It accepts ITIN for online applications and offers both taxable brokerage accounts and IRAs. Charles Schwab is also a strong choice, especially for those who prefer in-person service at a branch.
Do I need to fill out a W-8BEN or W-9 when opening a brokerage account with an ITIN?
It depends on your tax residency. U.S. resident aliens (who pass the substantial presence test) file a W-9 using their ITIN. Nonresident aliens file a W-8BEN, which certifies your foreign tax status and may reduce withholding if your country has a tax treaty with the U.S.
What documents do I need to open a brokerage account with an ITIN?
You typically need: your ITIN, a government-issued photo ID (passport, consular ID, or state ID), a U.S. address, and proof of address (utility bill or bank statement). Some brokerages also request employment information and the source of funds.