Opening a US Bank Account as a Non-Resident: SSN, ITIN or Neither
Ask about opening a US bank account as a non-resident and the advice comes back the same way: you need a Social Security number, and since you do not have one, go get an ITIN first. Both halves of that advice are wrong, and the second half sends people into a weeks-long process for a number the law does not actually ask for.
You do not need an SSN or an ITIN to open a US bank account as a non-resident. Federal law lists a passport as an acceptable identification number for a non-US person, on the same line as a taxpayer ID. What actually decides whether a bank asks for one is the bank’s own policy, and which tax form it asks you to sign.
The number is not the gate. The US customer identification rule gives non-US persons a passport route, and an ITIN is a tax-processing number you are only eligible for if you have a US tax filing requirement. Get the form and the bank right first, and the SSN or ITIN question answers itself.
The federal floor: a passport can substitute for an SSN or ITIN
When a US bank asks for your identification number, it is implementing a federal anti-money laundering rule, not exercising taste. The customer identification program (CIP) rule, 31 CFR 1020.220, sets the minimum information a bank must collect before it opens an account. Read what it says about the identification number, because the whole answer is in one sentence.
For a US person, the rule requires “a taxpayer identification number”. For a non-US person, it requires “one or more of the following: A taxpayer identification number; passport number and country of issuance; alien identification card number; or number and country of issuance of any other government-issued document evidencing nationality or residence and bearing a photograph or similar safeguard.”
A passport number, with the country that issued it, is an acceptable identification number for a non-US person. It sits on the same list as a taxpayer ID, not below it. The rule even adds an exception for people who have applied for a taxpayer ID but have not received it yet: a bank may open the account and collect the number later, within a reasonable period.
Two things follow. First, the federal floor does not require an SSN or an ITIN from a non-US person. Second, that floor is a minimum: a bank is free to ask for more. The moment a specific bank demands an SSN or ITIN, you are looking at that bank’s policy, not at the law.
SSN, ITIN, EIN: which number is yours
The confusion starts because three numbers are called “tax IDs” and people treat them as interchangeable. They are not, and each one is issued by a different authority for a different person.
| Number | Issued by | Who it is for | What it does |
|---|---|---|---|
| SSN | Social Security Administration | US citizens and non-citizens authorized to work | Work, tax, and the standard ID for a US person |
| ITIN | IRS | Non-residents and resident aliens with a US tax filing requirement who cannot get an SSN | Tax processing only, begins with 9, formatted like an SSN |
| EIN | IRS | Business entities, trusts and estates | Identifies the business itself, not a person |
An SSN is issued by the Social Security Administration; every other TIN is issued by the IRS. The ITIN exists specifically for people who have a US tax obligation but are not eligible for an SSN, which is why the IRS describes it as “a tax processing number only available for certain nonresident and resident aliens, their spouses, and dependents who cannot get a Social Security Number”.
The EIN is a different creature entirely: it identifies a business entity, and a non-resident who forms a US LLC gets one for the company. How long that takes, and why the EIN is the part that slows the application down, is covered here.
An ITIN is a tax number, not a bank ID
This is where people go wrong. The IRS is blunt about what an ITIN is: “a 9-digit number the IRS issues if you need a U.S. taxpayer identification number for federal tax purposes, but you aren’t eligible for a Social Security number (SSN)”. And it is equally blunt about what it is not: an ITIN does not qualify you for Social Security benefits, does not provide or change immigration status, does not authorize you to work, and does not “serve as identification outside the federal tax system”.
You can only get an ITIN if you have a federal tax purpose, and opening a bank account, by itself, is not one. The IRS lists what counts: you are required to file a US return, you want to claim a refund or an allowable benefit, or you must provide a number for another federal tax purpose. A tax return with all zero entries does not show a federal tax purpose, so a person whose only goal is a bank account may not even be eligible.
The process is slow on purpose. You file Form W-7 with a federal tax return attached, and the IRS says to allow 7 weeks for a status update, rising to 9 to 11 weeks during tax season (January 15 to April 30) or if you apply from overseas. Chasing an ITIN to open a bank account means spending up to eleven weeks on a number the account does not require, to fix a problem you may not actually have.
W-8BEN or W-9: the form decides the number
There is a second layer people miss, and it is where the “do I need a TIN” question actually lives. Once you pass the identity check, the bank asks a different question: are you a US person for tax purposes? That question is answered by a form, and the form is the real gate.
A W-9 is the certificate a US person signs, and it requires a taxpayer identification number: an SSN, an ITIN or an EIN. A W-8BEN is the opposite: it is the “Certificate of Foreign Status of Beneficial Owner”, the form a foreign person files to declare that they are not a US person. A non-resident who files a W-8BEN is claiming foreign status, not providing a US number.
The IRS narrows even that. It requires a TIN on a withholding certificate when the beneficial owner is claiming tax treaty benefits, an exemption for effectively connected income, or an exemption for certain annuities. If you are a non-resident with a personal account and no treaty claim, the W-8BEN plus your passport is the complete package: no SSN and no ITIN in the stack.
How to open a US bank account as a non-resident without an SSN or ITIN
The practical answer splits into two routes, and which one fits depends on whether the account is for you or for a company.
For a business account, the clean route is a US LLC with its own EIN. The EIN identifies the company, so the individual signer verifies with a passport, not an SSN. It is also the route with a compliance story a bank can read: the entity is registered, the responsible party is named, and the account is not riding on a personal number you are not entitled to. What makes Mercury and other fintechs reject applications is covered here, and the specific Mercury decline triggers, including the address checks, are walked through here.
For a personal account, the outcome depends entirely on the bank’s published policy, and that policy sits above the legal floor. A consumer bank may list an SSN or ITIN as its standard requirement, while other providers open with a passport plus a W-8BEN. The move is not to assume and not to ask a forum: read the account-opening requirements the provider publishes, and check which form it will hand you.
Checklist: what to sort out before you apply
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Decide personal or business first. A business account routes through an LLC and an EIN; a personal account routes through a passport and a W-8BEN. Mixing the two is where the SSN or ITIN demand shows up.
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Read the specific bank’s requirement. The federal floor accepts a passport, but a bank’s policy can ask for more. The requirement is on the provider’s own page, and it is the only place it counts.
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Have a valid passport and a proof of address ready. These two are the identity evidence the rule and the bank both check, and they work for a non-US person where an SSN cannot.
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Know which form you will sign. A W-8BEN means foreign status and no US number. A W-9 means a TIN, so stop and ask why a US-person form is being put in front of you.
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Do not apply for an ITIN unless you have a federal tax purpose. If you file a return or claim a treaty benefit, the ITIN has a job. If all you want is the account, the passport route already gets you there.
FAQ
Can I open a US bank account without an SSN or ITIN?+–
Yes. The federal customer identification rule lists a passport number, with its country of issuance, as an acceptable identification number for a non-US person. Whether a specific bank accepts it is that bank’s policy, which can sit above the legal floor.
Do I need an ITIN to open a US bank account as a non-resident?+–
Not at the federal floor. An ITIN is a tax-processing number for people with a US tax filing requirement who cannot get an SSN, and opening a bank account is not a federal tax purpose.
What is the difference between an SSN, an ITIN and an EIN?+–
An SSN is issued by the Social Security Administration for US citizens and work-authorized non-citizens. An ITIN is issued by the IRS for non-residents with a tax filing requirement, begins with 9, and is tax-only. An EIN is issued by the IRS for a business entity, not a person.
How long does it take to get an ITIN?+–
The IRS says to allow 7 weeks for a status update, and 9 to 11 weeks during tax season (January 15 to April 30) or if you apply from overseas. The application is Form W-7 with a federal tax return attached.
Which form do I sign, a W-8BEN or a W-9?+–
A non-resident who is not a US person signs the W-8BEN, the certificate of foreign status, and provides a passport rather than a US number. A W-9 is the US-person form and requires an SSN, an ITIN or an EIN.
Written by Daniel Hart, who covers neobanks, account freezes and cross-border banking for neobankfit. Based on the US customer identification rule (31 CFR 1020.220) and the Internal Revenue Service pages on taxpayer identification numbers, ITINs and Form W-8BEN, read 13 September 2026.
This article is general information, not legal or financial advice. Rules, deadlines and identification requirements change and depend on your country, account and provider. For your situation, check current terms and consider a qualified adviser.
