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An ITIN for non-residents is a tax ID for individuals, and many LLC owners never need one. Learn when it applies, how Form W-7 works and what proof the IRS wants to see.
Not always. An ITIN is a tax number for individuals who must file a US tax return but cannot get an SSN. Many non-resident LLC owners need only an EIN for the company. Whether you need an ITIN depends on your own tax situation, so confirm with a qualified tax adviser first.
Verified figures only — sources are listed at the foot of this page.
A US tax ID number for individuals
Form W-7
A federal tax return, unless an exception applies
Passport
An EIN is not an ITIN
October 2026
An Individual Taxpayer Identification Number (ITIN) is a nine-digit number the IRS issues to people who have a US tax filing or reporting need but are not eligible for a Social Security number. It identifies a person, not a company.
It is used only for federal tax purposes. It does not give you work authorization, a right to live in the US or eligibility for Social Security benefits. Think of it as a label the IRS uses to match a tax return to the right individual.
Often, no. Your LLC gets its own EIN, and that number is what banks and payment platforms ask for. A non-resident owner with no US-connected income frequently has no personal US tax return to file, which means no reason to hold an ITIN.
The picture changes if you have US-source income that creates a personal filing duty, if a tax treaty claim requires one, or if a bank or platform specifically asks for it. Treaty and filing questions are individual, so a qualified tax adviser is the right person to decide. FenFile is a business-services company and does not give tax advice.
Form W-7 is the IRS application for an ITIN. It asks for your name, foreign address, country of citizenship, date of birth and the reason you are applying.
In general, the W-7 is attached to a federal tax return, because the ITIN exists so you can file. There are narrow exceptions where you can apply without a return, but they depend on specific facts. Check the current IRS instructions before you submit anything.
Plan the mailing carefully. Sending a passport abroad by post carries risk and delay, so ask the IRS or an authorized acceptance agent about the safest way to submit certified or original documents.
The IRS needs documents that show who you are and that you are a foreign person. A passport is the standard standalone document because it covers both. Other documents can work in combination, so read the W-7 instructions for the current list.
The IRS generally wants original documents or copies certified by the issuing agency. Plain photocopies are a common reason for rejection, so confirm what is accepted before you mail your passport.
An EIN belongs to a business. An ITIN belongs to a person. They are issued through different forms, by different processes, for different jobs. An EIN is not an ITIN, and having an EIN does not let you skip the ITIN if you genuinely need one.
Many founders confuse the two because both are nine digits and both come from the IRS. A simple test helps. If a form asks for the company’s tax ID, use the EIN. If it asks for your personal US taxpayer number and you have no SSN, that is where an ITIN would go.
ITIN applications fail for small, avoidable reasons. Most are about documents rather than the form itself.
Think of the LLC, the EIN and the ITIN as three separate layers. The LLC is the company. The EIN identifies it for banks and the IRS. An ITIN, if you need it, identifies you personally for a US return.
Do the layers in that order. Form the LLC, get the EIN, set up banking, then ask your adviser whether an ITIN adds anything for your situation. Rushing to apply for an ITIN you do not need wastes time, and mailing your passport carries its own risk.
ITIN application support is an optional add-on at FenFile. It sits alongside the core formation work, which comes first. The Starter plan (Starter) covers LLC formation, first-year registered agent, operating agreement and EIN support. If you later find you need an ITIN, we help you understand the W-7, check your document list and prepare the package.
We do not decide whether you need an ITIN, and we cannot promise how fast the IRS will respond. Start with the EIN, then speak to a qualified adviser about your personal position.
Keep these ready and our team will guide you through the rest.
From first message to done — with updates at every stage.
Ask a qualified tax adviser whether you have a personal US filing duty or treaty claim.
Prepare a valid passport and any supporting proof the W-7 instructions list.
Fill in the form and attach it to your return unless an exception applies.
Send the package as the IRS instructs and record what you mailed.
Pick a plan, pay once, and let our team handle the rest.
Solo founders launching their first US company
one-time + state filing fee
Founders who need to get paid and bank in the US
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Talk to a FenFile advisor — we’ll point you to the right one.
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No. Many non-resident LLC owners need only an EIN for the company. You need an ITIN when you have a personal US tax filing or reporting requirement and no SSN. A qualified tax adviser can confirm whether that applies to you.
Generally the W-7 is attached to a federal tax return. Narrow exceptions exist, but they depend on your facts and the current IRS rules. Check the official W-7 instructions or ask a qualified adviser before applying. Ask our team on WhatsApp if your case is unusual.
A passport is the standard standalone document because it proves both identity and foreign status. The IRS may also want original or certified copies. Check the current W-7 instructions for any extra requirements that apply to you. We explain this clearly before you pay.
No. An EIN identifies a business and an ITIN identifies an individual. They come from different applications. Having an EIN does not replace an ITIN, and the reverse is also true. Check the provider’s current rules, since they change.
No. An ITIN is for federal tax reporting only. It does not grant work authorization, immigration status or Social Security eligibility. It simply lets the IRS match tax filings to a person who has no SSN. Ask our team on WhatsApp if your case is unusual.
Yes, as an optional add-on. We help you understand Form W-7, check your documents and prepare the package. We are not a tax adviser, so we do not decide whether you need an ITIN. Ask on WhatsApp for details.
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Written by the FenFile team · Last reviewed October 2026. General information, not legal or tax advice.
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