Gokce Tandogdu
ITIN Specialist, itin.net
Your ITIN, or Individual Taxpayer Identification Number, is assigned by the IRS upon approval of your Form W-7, Application for IRS Individual Taxpayer Identification Number. It is not something you can find on a tax form before you apply for it. Once assigned, your ITIN will appear on the tax return you file, and on official IRS correspondence related to your tax account.
Understanding where to find your ITIN number on tax forms is a common question for non-residents and foreign nationals who need one for U.S. tax purposes. This number is essential for filing federal income tax returns, claiming tax treaty benefits, and for other U.S. tax-related activities.
When You First Receive Your ITIN
The IRS issues your ITIN on a formal notice, Letter CP-565, Notice of ITIN Assignment. This letter is mailed to you after your Form W-7 application has been processed and approved. This is the primary document where you will first see your assigned ITIN. It is critical to keep this letter in a safe place, as it contains your unique nine-digit number.
This notice serves as official confirmation that you have been assigned an ITIN. It will clearly state your ITIN and provide instructions on how to use it. You should not rely on any other document for your official ITIN assignment. If you have applied through a Certified Acceptance Agent (CAA), they will also receive notification and can assist you in retrieving this information.
Locating Your ITIN on Your Tax Return
Once you have your ITIN, you will use it on your U.S. federal income tax return. For non-residents, this is typically Form 1040-NR, U.S. Nonresident Alien Income Tax Return. The Form 1040-NR has a specific line where you must enter your ITIN. This is usually found in the top section of the first page, often labeled "Your social security number" or "ITIN." You will enter your nine-digit ITIN in the designated space.
If you are filing a joint return with a spouse who has a Social Security Number (SSN), your ITIN will be entered in the corresponding field for the secondary taxpayer. It is essential that the ITIN is entered correctly on the tax return. An incorrect ITIN can lead to processing delays or rejection of your return by the IRS.
For example, on Form 1040-NR, the line for the SSN/ITIN is prominently displayed near the top of page 1, typically adjacent to your name and address. If you are filing other IRS forms where your tax status is relevant, such as those related to U.S. business activities or claiming specific tax benefits, you will also need to provide your ITIN on those forms.
ITIN on Other IRS Forms and Correspondence
Beyond your income tax return, your ITIN may appear on other IRS forms and official communications. For instance, if you are required to file Form 5472, Information Return of a 24 Percent Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business, you will need to include your ITIN as the responsible party. This form is crucial for U.S. LLCs owned by foreign individuals or entities.
If you are involved in U.S. business operations, such as owning a U.S. LLC, you might also be filing Form 5472. The ITIN is required on this form to identify the foreign owner or related party. This is distinct from an Employer Identification Number (EIN), which identifies the business entity itself. You can learn more about obtaining an EIN on our /ein service page.
Any correspondence you receive from the IRS concerning your tax matters, such as notices about your tax liability, refund status, or account adjustments, will likely reference your ITIN. These notices, like Letter CP-48 (Notice of Proposed Changes to Your Tax Return) or Letter CP-575 (Notice of EIN Assignment, though this is for EINs, ITIN notices have similar identifiers), will typically show your ITIN for identification purposes.
What If You Can't Find Your ITIN?
If you have lost your Letter CP-565 or cannot recall your ITIN, you have several options to retrieve it. The most straightforward method is to check copies of tax returns you have previously filed. Your ITIN will be listed on any Form 1040-NR or other relevant tax forms you submitted to the IRS.
If you do not have copies of your past tax returns, you can request a transcript of your tax account from the IRS. This transcript will contain your ITIN. You can request a transcript online through the IRS website, by mail using Form 4506-T, Request for Transcript of Tax Return, or by phone. Be prepared to verify your identity with personal information.
Another option is to contact the IRS directly. You can call the IRS toll-free line for international taxpayers. They will ask you several questions to verify your identity before providing your ITIN. This process can sometimes take time due to high call volumes.
If you applied for your ITIN through a Certified Acceptance Agent (CAA), you may be able to contact them for assistance. CAAs have the ability to verify your identity and documentation for the Form W-7 application and may have records or be able to assist in the retrieval process. itin.net works with a network of trusted CAAs to help applicants.
Applying for a New ITIN vs. Retrieving an Existing One
It is crucial to distinguish between needing to find your existing ITIN and needing to apply for a new one. If you have been issued an ITIN before, the IRS generally does not assign a new one. You must use the ITIN previously assigned to you. Applying for a new ITIN when you already have one can create significant confusion and issues with your tax filings.
If you believe you need a new ITIN because you were never issued one, or if you were issued one but it is no longer valid (e.g., ITINs issued before 2013 may need renewal), you would need to file a new Form W-7. However, if you simply cannot locate your existing number, the steps outlined above for retrieving it apply.
Renewal of ITINs typically occurs if the ITIN was issued before 2013 and has not been used on a federal tax return for three consecutive tax years. If your ITIN has expired due to non-use, you would file Form W-7 again to have it reactivated or reissued. The IRS will notify taxpayers if their ITIN requires renewal.
ITINs for Business Purposes: LLCs and Banking
For foreign individuals or entities planning to establish a presence in the U.S., obtaining an ITIN is often a preliminary step before other business setup processes. For example, if you are forming a U.S. LLC, you will likely need an ITIN to act as a responsible party or owner for certain tax filings, such as Form 5472. Establishing a U.S. LLC is a common way to conduct business in the United States. Our /llc service can guide you through this process.
Following the formation of an LLC and obtaining necessary tax identification numbers, opening a U.S. bank account is the next logical step for many. While some banks may require an SSN, others, particularly those catering to international clients or startups, may accept an ITIN. Having an ITIN can facilitate the process of opening accounts with financial institutions like Mercury, Relay, or Brex, which are popular among startups and international entrepreneurs. A U.S. bank account is essential for managing business finances effectively. You can find more information on our /bank-account page.
When you are ready to apply for your ITIN, especially if you want to avoid mailing original identification documents to the IRS, consider using a Certified Acceptance Agent (CAA). CAAs can verify your original identification documents and forward your Form W-7 application to the IRS on your behalf. This can significantly speed up the process and provide peace of mind. itin.net assists individuals in connecting with these services.
Summary: Where to Find Your ITIN
To summarize, your ITIN is not found on a tax form prior to application. You will find your assigned ITIN first on the IRS Letter CP-565, which is mailed to you after your Form W-7 application is approved. Subsequently, you will enter this ITIN on your U.S. federal income tax return (typically Form 1040-NR) and any other required IRS forms, like Form 5472 for U.S. business filings. If you lose your ITIN, check past tax returns, request an IRS transcript, or contact the IRS directly. Understanding where to find your ITIN number on tax forms is vital for accurate and timely tax compliance.
If you are planning U.S. business ventures, obtaining an ITIN is often a foundational step. This can lead to the need for an EIN and the formation of a U.S. LLC, followed by opening a U.S. bank account. Each of these steps has its own requirements and processes, which we detail on our site.