Bottom line
Unlikely. Vanguard’s online application only takes a Social Security number and rejects an ITIN. Call Vanguard (800-662-7447) to ask about a paper application, or open with Fidelity or Schwab, which accept an ITIN.
Does Vanguard Accept an ITIN?
Unlikely. Vanguard’s online application only takes a Social Security number and rejects an ITIN, for brokerage accounts and IRAs alike. Calling 800-662-7447 to ask about a paper application is the only route at Vanguard; Fidelity and Schwab accept an ITIN and sell Vanguard’s ETFs commission-free.
Vanguard’s online application labels the field only “Social Security number,” and an ITIN returns “Error: Enter a valid Social Security number in the following format: nnn-nn-nnnn” (as of October 2026). Its tax forms page covers the forms account holders file.
Why Does Vanguard's Online Application Reject My ITIN?
Vanguard’s online application only takes a Social Security number and rejects an ITIN. An ITIN has 9 digits like an SSN, but it starts with 9 and its middle 2 digits fall in the 50–65, 70–88, 90–92, or 94–99 range, so it is a different number. Enter one and the form returns a “valid Social Security number” error; at Vanguard, your option is calling 800-662-7447.
What to do if the online form rejects you
Call Vanguard at 800-662-7447 (weekdays, 8 a.m. – 8 p.m. ET). Tell the representative you have an ITIN and ask whether Vanguard can open your account with a paper application. If not, Fidelity and Schwab accept an ITIN.
Platform update (2025)
Vanguard moved retail accounts to its single brokerage platform, which handles stocks, ETFs, and Vanguard funds, by the end of 2025; accounts that couldn't move stay as limited Mutual Fund Direct accounts. New accounts open on the brokerage platform, whose online application rejects an ITIN.
Which Vanguard Account Types Accept ITIN?
Unlikely for any of them. Vanguard’s online application only takes a Social Security number and rejects an ITIN for all 3 main individual account types: taxable brokerage, Roth IRA, and traditional IRA. With an ITIN, ask Vanguard by phone about a paper application, or open the same account type at Fidelity or Schwab.
| Account Type | ITIN Accepted | Notes |
|---|---|---|
| Individual taxable brokerage | Unlikely — online form rejects an ITIN | No minimum; ETFs available from $1 |
| Roth IRA | Unlikely — online form rejects an ITIN | Must have earned income; 2026 limit $7,500/$8,600 |
| Traditional IRA | Unlikely — online form rejects an ITIN | Deductibility depends on income and employer plan |
| Joint brokerage | Unlikely — online form rejects an ITIN | Each owner needs a tax ID |
Can ITIN Holders Buy Vanguard ETFs Like VTI and VXUS?
Yes — ITIN holders can buy Vanguard ETFs like VTI (Total Stock Market), VXUS (Total International Stock), VOO (S&P 500), and BND (Total Bond Market) at any brokerage that accepts an ITIN, such as Fidelity or Schwab. ETFs trade like stocks, so there is no fund minimum — you can buy a single share or a fractional share where fractional trading is offered.
Fidelity as an alternative for Vanguard ETFs
Since Vanguard’s online application rejects an ITIN, open an account at Fidelity instead. Fidelity’s application lists SSN/ITIN for the taxpayer ID, and you can buy VTI, VXUS, VOO, and BND there commission-free — the same Vanguard ETFs, just through a different broker with a smoother signup flow.
What Are Vanguard's Minimum Investment Requirements for ITIN Holders?
Vanguard ETFs have no minimum investment — you buy whole shares (or fractional shares where supported). Vanguard mutual funds, however, have minimums: most Admiral Shares mutual funds require $3,000 to start, and some Investor Shares have a $1,000 minimum. The same minimums apply whether you have an SSN or an ITIN. If you're starting with less than $3,000, buy Vanguard ETFs instead of mutual funds.
| Investment Type | Minimum | Example |
|---|---|---|
| Vanguard ETFs | $0 (1 share) | VTI, VXUS, VOO, BND |
| Vanguard Investor Shares (mutual funds) | $1,000 | Select fund series |
| Vanguard Admiral Shares (mutual funds) | $3,000 | VTSAX, VTIAX, VBTLX |
Why ETFs are better for ITIN holders starting out
If you have less than $3,000, buy VTI (the ETF equivalent of VTSAX) and VXUS instead of waiting until you hit the mutual fund minimum. The expense ratios are nearly identical (VTI is 0.03%), and ETFs trade like stocks so you can start with a single share. This is true whether you open at Vanguard or Fidelity.
Do I Fill Out a W-9 or W-8BEN at Vanguard With an ITIN?
Your U.S. tax residency status decides the form. ITIN holders who meet the IRS substantial presence test or hold a green card are U.S. tax residents and complete a W-9 using their ITIN. ITIN holders who are non-residents for tax purposes complete a W-8BEN, which also accepts an ITIN in place of an SSN.
Vanguard asks about your residency status when you open the account and tells you which form applies. You can confirm residency using the IRS substantial presence test.
| Tax Status | Form to Submit | Key Detail |
|---|---|---|
| U.S. tax resident (substantial presence or green card) | W-9 | Enter ITIN where SSN is requested |
| Non-resident alien for tax purposes | W-8BEN | Enter ITIN in line 5 (U.S. TIN) |
What Are the Best Alternatives to Vanguard for ITIN Holders?
Because Vanguard’s online application rejects an ITIN, 3 brokerages are better routes for ITIN holders: Fidelity (no minimums, fractional shares, zero-expense-ratio index funds), Charles Schwab (no minimums, commission-free ETFs), and Interactive Brokers (good for non-resident aliens with investment accounts abroad). All three carry Vanguard ETFs like VTI and VXUS commission-free.
Fidelity
✓ Online ITIN Application No MinimumsFidelity's application accepts an ITIN in the taxpayer ID field; a representative may call to verify your identity. No account minimums, fractional shares on most ETFs, and Fidelity's own zero-expense-ratio funds (FZROX, FZILX) are exclusive to Fidelity. All Vanguard ETFs available commission-free. Best overall alternative for ITIN holders.
Charles Schwab
✓ Accepts ITIN No MinimumsSchwab’s application asks for an SSN or taxpayer ID, and an ITIN is a taxpayer ID. It also has a solid international investor program (Schwab International Account). No account minimums, commission-free ETF trading. Strong option if you prefer a full-service brokerage.
Frequently Asked Questions
Does Vanguard accept ITIN?
Unlikely. Vanguard’s online application only takes a Social Security number and rejects an ITIN. Call Vanguard to ask about a paper application, or open with Fidelity or Schwab, which accept an ITIN.
Why does Vanguard's online application reject my ITIN?
Vanguard’s online application only takes a Social Security number and rejects an ITIN. Call 800-662-7447 to ask whether Vanguard can open your account by paper application, or apply at Fidelity or Schwab, whose applications take an ITIN.
Can ITIN holders open a Roth IRA at Vanguard?
Unlikely. Vanguard’s online application only takes a Social Security number. ITIN holders with earned income can open a Roth IRA at Fidelity, whose application lists SSN/ITIN, or at Schwab, and hold Vanguard ETFs there. The 2026 contribution limit is $7,500 ($8,600 if age 50 or older).
Do I fill out a W-9 or W-8BEN at Vanguard with an ITIN?
It depends on your tax residency. ITIN holders who are U.S. tax residents (the substantial presence test or green card test) complete a W-9 using their ITIN. Non-residents complete a W-8BEN, which also accepts ITIN. The brokerage you open with asks about your residency and tells you which form applies.