Gokce Tandogdu
ITIN Specialist, itin.net
The fundamental difference between an EIN and an ITIN lies in their purpose and who they identify: an EIN identifies a business entity, while an ITIN identifies an individual. Understanding what is the difference between fein and itin is crucial for anyone conducting business or earning income in the United States as a non-resident or foreign national. An EIN is used for tax reporting and identification of businesses, such as corporations, partnerships, and LLCs, while an ITIN is used for individual U.S. income tax reporting by individuals who do not have and are not eligible to obtain a Social Security Number (SSN).
What is an EIN?
An Employer Identification Number (EIN), also known as a Federal Tax Identification Number, is a nine-digit number assigned by the Internal Revenue Service (IRS) to business entities operating in the United States for identification purposes. It functions much like a Social Security Number for individuals, but for businesses. You will need an EIN if you operate a business as a sole proprietor with employees, a partnership, a corporation, an LLC, or certain other types of business entities. It is required for opening business bank accounts, filing business tax returns, and hiring employees. Applying for an EIN is a free service provided by the IRS. The application is typically made using Form SS-4, Application for Employer Identification Number. This process can be done online via the IRS website, by mail, or by fax. For most applicants, obtaining an EIN online is the fastest method, often resulting in instant issuance of the number.
The purpose of an EIN is to distinguish one business entity from another. It is used on tax returns, employment tax filings, and other business-related documents. If your business structure changes, or if you acquire another business, you may need to obtain a new EIN. However, if you are a sole proprietor without employees and are reporting business income on your personal tax return (Schedule C of Form 1040), you generally do not need an EIN unless you are operating as an LLC or partnership. If you are forming a U.S. LLC, an EIN is almost always a necessary step for tax filing and for opening a business bank account.
What is an ITIN?
An Individual Taxpayer Identification Number (ITIN) is a tax processing number issued by the Internal Revenue Service (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). An ITIN is for federal tax purposes only. It does not authorize employment in the U.S. or provide eligibility for Social Security benefits. The IRS issues ITINs to individuals who need to comply with U.S. tax laws but are not eligible for an SSN. This includes non-resident aliens who need to file a U.S. tax return, resident aliens who are filing a U.S. tax return, dependents, and other tax identification number transferees.
Form W-7, Application for IRS Individual Taxpayer Identification Number, is used to apply for an ITIN. You must submit this form along with original or certified copies of identification documents and a U.S. federal income tax return (unless an exception applies). The application can be submitted directly to the IRS or through an authorized IRS Acceptance Agent (CAA). The itin.net service assists individuals in applying for an ITIN, often through the CAA path, which can expedite the process by allowing agents to verify original identification documents on your behalf. The IRS generally takes 7 to 10 weeks to process an ITIN application, though this can vary.
Key Differences Summarized
The primary distinctions between an EIN and an ITIN can be broken down into a few core areas:
- Purpose: EINs are for businesses; ITINs are for individuals.
- Issuing Authority: Both are issued by the IRS.
- Application: EINs are applied for using Form SS-4; ITINs are applied for using Form W-7.
- Eligibility: EINs are for business entities; ITINs are for individuals without an SSN who have U.S. tax obligations.
- Usage: EINs are used for business tax filings, employment, and banking; ITINs are used for individual income tax filings and certain other tax-related transactions.
Understanding what is the difference between fein and itin is not just about knowing the acronyms; it's about understanding your obligations and the tools the IRS provides for compliance. For instance, if you are establishing a U.S. LLC as a non-resident, you will likely need both an EIN to identify the LLC for tax and banking purposes and an ITIN for your personal U.S. tax filings if you have any personal income sourced from the U.S.
Who Needs Which Number?
Individuals: If you are an individual non-resident alien who is earning income in the U.S. (e.g., from investments, rental property, or performing services in the U.S.) and are therefore required to file a U.S. federal income tax return (like Form 1040-NR), you will need an ITIN. You will also need an ITIN if you are claiming a tax treaty benefit or if you are a dependent or spouse of a U.S. taxpayer and need to be listed on their return. You do not need an ITIN if you are eligible for and have obtained an SSN.
Businesses: If you are operating a business as a partnership, corporation, S-corporation, or LLC, you will need an EIN. This applies even if you are the sole owner of an LLC, as the IRS often treats single-member LLCs as disregarded entities for tax purposes, meaning their income is reported on the owner's personal tax return, but the LLC itself still requires an EIN for distinct identification. If your business entity plans to hire employees, you will also need an EIN to report employment taxes. For foreign individuals or entities setting up a U.S. business, such as a U.S. LLC, obtaining an EIN is a mandatory step for tax compliance and for facilitating business operations, including opening a U.S. bank account.
Applying for an EIN
The application for an EIN is straightforward and primarily done through Form SS-4. The most efficient method for most applicants, especially those outside the U.S., is to apply online through the IRS website. This usually provides immediate issuance of the EIN. Alternatively, you can download Form SS-4 from the IRS website and submit it by fax or mail. Processing times for fax or mail applications are significantly longer, often taking several weeks.
If you are applying by fax or mail, ensure all sections of Form SS-4 are completed accurately. Key information required includes the legal name of the business, the business address, the type of business entity, the reason for applying for the EIN, and the name and taxpayer identification number (if applicable) of the responsible party. For foreign applicants, the process is similar, but specific instructions for international applicants should be followed on the IRS website.
Applying for an ITIN
To apply for an ITIN, you must complete and submit Form W-7, Application for IRS Individual Taxpayer Identification Number. This application requires you to provide proof of your identity and foreign status. The most common way to do this is by submitting original or certified copies of your passport and at least one other identification document (e.g., national identity card, driver's license, birth certificate). A crucial component of the Form W-7 application is attaching a U.S. federal income tax return for the year for which you are claiming the ITIN, unless you qualify for an exception (such as claiming a tax treaty benefit without filing a return).
There are three main ways to submit your Form W-7 application:
- Mail: You can mail your application, supporting documents, and tax return directly to the IRS ITIN Operation in Austin, Texas. Be aware that you will need to send original documents or certified copies from the issuing agency, and these will be returned to you by mail, which can take several weeks.
- IRS Taxpayer Assistance Centers (TACs): Some IRS TACs offer in-person document validation services. You will need to schedule an appointment and bring your original identification documents and completed Form W-7 application.
- Certified Acceptance Agents (CAAs): This is often the most convenient method. CAAs are individuals or organizations authorized by the IRS to assist taxpayers in applying for ITINs. They can review your documentation and forward your application to the IRS. Many CAAs, like those associated with itin.net, can also authenticate your original identification documents, meaning you do not have to mail them to the IRS.
Using a CAA can streamline the process and reduce the risk of losing your original documents. The processing time for an ITIN application is typically between 7 and 10 weeks from the date the IRS receives the application.
When Do You Need Both?
Many non-resident individuals who are involved in U.S. business activities will find themselves needing both an EIN and an ITIN. Consider the scenario of a foreign national who decides to form a U.S. LLC to conduct business. The LLC itself, as a business entity, will need an EIN for its tax identification and for opening a U.S. bank account. The individual owner, if they are not eligible for an SSN and have personal U.S. tax filing obligations (perhaps from distributions from the LLC or other U.S. income), will need an ITIN. In this case, the EIN identifies the business, and the ITIN identifies the individual.
Another common situation involves foreign individuals who are U.S. residents for tax purposes (e.g., due to meeting the substantial presence test) and have U.S. source income. They would need an ITIN to file their U.S. tax returns. If they also own or operate a business that requires a separate tax identification number, that business would need an EIN. The distinction between an EIN and an ITIN is crucial for correct tax reporting for both the individual and any business entities they control.
Common Mistakes and Pitfalls
When applying for either an EIN or an ITIN, accuracy is paramount. Common mistakes include:
- For EINs: Incomplete Form SS-4 submissions, incorrect business entity type, or failure to identify the correct responsible party can lead to delays or rejection. Foreign applicants sometimes overlook specific instructions for international applicants.
- For ITINs: Submitting Form W-7 without a required U.S. federal income tax return (unless an exception applies), using expired identification documents, or failing to provide sufficient proof of identity and foreign status are frequent errors. Not understanding the difference between original documents and certified copies can also cause issues.
- Confusion between numbers: Mistaking an ITIN for an EIN or vice-versa can lead to incorrect applications and filings. For example, trying to use an ITIN to open a business bank account or an EIN to file personal income tax returns will not work.
It is also important to note that an ITIN does not grant work authorization. Individuals who are not authorized to work in the U.S. but are required to file taxes may still need an ITIN. If you are unsure about your U.S. tax obligations or the correct identification number required, seeking professional advice is recommended.
Next Steps After Obtaining Your Numbers
Once you have obtained your EIN and/or ITIN, your responsibilities continue. For businesses with an EIN, this typically involves filing annual tax returns (such as Form 1120 for corporations, Form 1065 for partnerships, or Form 1040-NR with a Schedule C if operating as a sole proprietor with an EIN) and complying with employment tax regulations if you have employees. If you have formed a U.S. LLC with multiple members, you will file Form 1065 and each member will receive a Schedule K-1. Single-member LLCs typically file Form 5472 and Form 1120 if they are foreign-owned.
For individuals with an ITIN, the primary ongoing requirement is to file U.S. federal income tax returns annually if you have U.S. source income or are otherwise required to do so. ITINs must also be renewed periodically; the IRS has specific renewal schedules based on whether the ITIN has been used on a tax return in the last three consecutive tax years. Failure to renew an ITIN can result in processing delays for future tax returns.
If you are a non-resident planning to establish a U.S. business presence, the process often involves forming an LLC, obtaining an EIN, and then opening a U.S. bank account. Services like itin.net can assist with the ITIN application, and other resources can guide you through the EIN and business formation steps, enabling you to open accounts with U.S. financial institutions. Understanding the interplay between these numbers and entities is key to successful U.S. business operations for foreign nationals.