Gokce Tandogdu
ITIN Specialist, itin.net
An Employer Identification Number (EIN) and an Individual Taxpayer Identification Number (ITIN) are both identification numbers issued by the U.S. Internal Revenue Service (IRS), but they serve fundamentally different purposes and are issued to different entities.
The Core Difference: Business vs. Individual
The primary distinction is that an EIN is used to identify a business entity, while an ITIN is used to identify an individual for tax purposes. An EIN is akin to a Social Security number for a business, allowing the IRS to track business tax filings and activities. An ITIN is for individuals who are not eligible for a Social Security number (SSN) but have U.S. tax obligations or are dependents or spouses of U.S. taxpayers.
Understanding what is the difference between ein and itin number is crucial for any non-resident or foreign national planning to conduct business or manage personal tax affairs in the United States.
Employer Identification Number (EIN)
An EIN, also known as a Federal Tax Identification Number, is a nine-digit number assigned by the IRS to business entities operating in the United States. It is required for a variety of business structures, including corporations, partnerships, limited liability companies (LLCs), and even sole proprietorships under certain circumstances.
Who Needs an EIN?
Most U.S. businesses need an EIN. This includes:
- Corporations and Partnerships: All corporations and partnerships must have an EIN.
- Limited Liability Companies (LLCs): Multi-member LLCs are generally required to have an EIN. Single-member LLCs typically do not need an EIN unless they elect to be taxed as a corporation or if they have employees. However, many banks require an EIN for an LLC to open a business bank account, even for single-member LLCs.
- Sole Proprietors with Employees: If you operate as a sole proprietor and hire employees, you need an EIN to report employment taxes.
- Businesses Requiring Specific Tax Filings: Certain types of businesses, such as those involved in excise taxes or alcohol, tobacco, and firearms, need an EIN regardless of their structure or employee status.
- Estates and Trusts: These entities may also require an EIN.
- Non-profit Organizations: Charities, foundations, and other non-profit organizations require an EIN.
Applying for an EIN
The primary method for applying for an EIN is by completing and submitting Form SS-4, Application for Employer Identification Number. This application can be submitted online, by fax, or by mail. The online application is the fastest method, often resulting in an immediate assignment of an EIN. Previously, only U.S. citizens and residents could apply online, but now international applicants can also use the online system.
The application requires detailed information about the business, including its legal name, trade name (if different), mailing address, responsible party’s name and Social Security number (if applicable), and the type of business entity. The IRS will assign your EIN upon approval of your application. The IRS issues a confirmation letter, often referred to as a CP-575 notice, which officially assigns the EIN to your business.
For foreign applicants who cannot apply online, fax or mail submission of Form SS-4 is an option. Processing times for faxed or mailed applications can be significantly longer, often taking several weeks.
EIN for Foreign Nationals and Businesses
Foreign nationals setting up U.S. business entities, such as a U.S. LLC, will typically need an EIN. If the responsible party for the business does not have a Social Security number (SSN) or an ITIN, they can still apply for an EIN. In such cases, the SSN field on Form SS-4 can be left blank, or if the responsible party is a foreign individual, they can provide their foreign country tax identification number if they have one. The IRS will assign an EIN to the business entity. This EIN is essential for opening a U.S. bank account, filing business tax returns, and meeting other compliance requirements like filing Form 5472 for U.S. reporting companies.
Individual Taxpayer Identification Number (ITIN)
An ITIN is a nine-digit tax processing number issued by the IRS to individuals who are required to have a U.S. taxpayer identification number but do not have and are not eligible to obtain a Social Security number (SSN). ITINs are issued regardless of immigration status, as they are for tax purposes only.
Who Needs an ITIN?
Individuals who generally need an ITIN include:
- Non-resident aliens filing a U.S. tax return (e.g., Form 1040-NR) and not eligible for an SSN.
- Resident aliens filing a U.S. tax return (e.g., Form 1040) and not eligible for an SSN.
- Dependents or spouses of U.S. citizens or resident aliens who need to file a U.S. tax return or claim benefits as a dependent or spouse, and are not eligible for an SSN.
- Dependents or spouses of non-resident alien U.S. visa holders who need to file a U.S. tax return or claim benefits, and are not eligible for an SSN.
An ITIN is necessary if you need to file U.S. taxes and do not have an SSN. This might be because you are a foreign student, a foreign worker, or a foreign investor with U.S. income. It's important to note that an ITIN does not authorize you to work in the United States, nor does it provide eligibility for Social Security benefits.
Applying for an ITIN
To obtain an ITIN, you must file Form W-7, Application for IRS Individual Taxpayer Identification Number. This form is submitted along with your U.S. federal income tax return (unless you qualify for an exception). You will also need to provide original documentation or certified copies of your identification and foreign status. Accepted documents typically include passports, national identity cards, and birth certificates.
There are three main ways to submit your Form W-7 application:
- Mail: You can mail your completed Form W-7, tax return, and supporting identification documents directly to the IRS in Austin, Texas. This is the most common method but also the slowest, with processing times that can range from 4 to 12 weeks or more, depending on the IRS workload.
- IRS Taxpayer Assistance Center (TAC): You can make an appointment at an IRS TAC to have your application and original identification documents verified. Not all TACs provide this service, and it requires advance scheduling.
- Certified Acceptance Agent (CAA): This is often the most convenient and secure method. CAAs are individuals or entities authorized by the IRS to assist applicants in obtaining ITINs. They can review your documentation, verify its authenticity, and forward your application to the IRS on your behalf. This allows you to keep your original documents. itin.net is a service that works with CAAs to streamline the ITIN application process for individuals worldwide.
The IRS will review your application and, if approved, will issue you an ITIN. You will receive a notice, often referred to as a CP-565, confirming your ITIN assignment.
ITIN for Foreign Nationals
Foreign nationals who earn income in the U.S., have U.S. tax filing obligations, or are dependents of U.S. taxpayers will likely need an ITIN. This includes individuals who are not eligible for an SSN because they are not authorized to work in the U.S. or because they do not meet the SSN eligibility criteria. For example, a foreign investor receiving dividends from a U.S. company might need an ITIN to file a U.S. tax return to claim treaty benefits and potentially a refund of withheld taxes.
Key Differences Summarized
| Feature | EIN (Employer Identification Number) | ITIN (Individual Taxpayer Identification Number) |
|---|---|---|
| Purpose | Identifies a business entity for tax purposes. | Identifies an individual for U.S. tax purposes. |
| Issued To | Businesses (corporations, partnerships, LLCs, etc.) | Individuals not eligible for an SSN. |
| Primary Application Form | Form SS-4 | Form W-7 (submitted with a tax return, usually) |
| Work Authorization | No direct work authorization for individuals. | Does not authorize employment. |
| Eligibility | Business entity structure, tax filing requirements. | Requirement to file U.S. taxes or be a dependent/spouse, not eligible for SSN. |
| Example Use Case | Opening a business bank account, hiring employees, filing business taxes. | Filing personal income tax returns, claiming dependents, tax treaty benefits. |
When You Might Need Both
It is possible, and often necessary, for a foreign national to have both an EIN and an ITIN. This scenario commonly arises when a foreign national establishes a U.S. business, such as a U.S. LLC, and also has personal U.S. tax obligations.
For instance, if you are a foreign individual who starts a U.S. LLC, you will need an EIN for the LLC to operate, open bank accounts, and file business taxes. If you, as an individual, have personal income that requires you to file a U.S. tax return (e.g., rental income from a U.S. property not channeled through the LLC, or personal investment income), and you are not eligible for an SSN, you will need an ITIN for your personal tax filings. The ein service can help you obtain your business EIN, and services like itin.net can assist with your ITIN application.
Conclusion: EIN for Business, ITIN for Individuals
In summary, the fundamental difference between an EIN and an ITIN lies in who they identify: businesses versus individuals. An EIN is for U.S. business entities, enabling tax tracking and compliance for the company. An ITIN is for individuals who have U.S. tax responsibilities but cannot obtain an SSN. Both numbers are essential tools for navigating the U.S. tax system, whether you are establishing a business or fulfilling personal tax obligations as a foreign national. Understanding what is the difference between ein and itin number ensures you apply for the correct identification, streamlining your U.S. financial and tax processes.
For foreign nationals planning to engage in U.S. business, obtaining both an EIN and an ITIN may be necessary. The process for each is distinct, involving different forms and IRS procedures. Seeking guidance from a qualified tax professional or utilizing specialized services can help ensure accuracy and efficiency in both applications.