Key Takeaways

  • An ITIN (Individual Taxpayer Identification Number) is issued by the IRS for individuals who need to file taxes but are not eligible for an SSN.
  • Foreign business owners do not need an ITIN to start a business in the U.S. but may need it for tax purposes.
  • An EIN (Employer Identification Number) is required to operate a business in the U.S. and serves as the business’s tax ID.
  • ITINs are used for tax reporting and do not grant work authorization or legal immigration status.
  • Obtaining an ITIN requires IRS Form W-7, proof of identity, and a federal tax return (unless meeting an exception).
  • Applicants can apply for an ITIN through mail, IRS offices, or IRS-authorized Acceptance Agents.
  • An ITIN does not replace an EIN, and business owners may need both depending on their situation.
  • ITINs must be renewed if they expire before tax filing.
  • Alternative tax identification options include SSNs for U.S. citizens and permanent residents, and EINs for businesses.

How to get a ITIN number for business? An Individual Taxpayer Identification Number (ITIN) is a specific tax processing number that is distributed by the Internal Revenue Service (IRS). An ITIN has nine digits, always begins with the number 9, and has a 7 or an 8 as the fourth digit (e.g., 9XX-7X-XXXX). In order to obtain an ITIN number, an applicant must complete IRS Form W-7, the application for Individual Taxpayer Identification Number.

Tax ID Numbers (TIN)

The United States requires any foreign investor who wants to form a business in the country to obtain a Tax ID number. The IRS issues these identification numbers in accordance with tax law for specific tax purposes. Individual taxpayers who have an obligation to file a tax return are granted a Social Security Number (SSN). Legal immigrants can apply for a SSN when completing the immigrant visa application with the United States State Department. If you complete both of these applications, a visit to the Social Security office may not be needed upon arrival into the United States.

It is also an option to visit the Social Security office to apply for a SSN once you arrive into the United States. In the event that an individual is not eligible for a SSN, the IRS will use an ITIN to identify non-resident aliens and foreign nationals who must report federal taxes. Specifically, ITIN numbers are granted to non-citizens who are employed in the United States and must file taxes. However, if those individuals would like to open a business in the United States, an ITIN number is not required.

The IRS will only issue an ITIN to the following individuals:

  • Those who do not have a valid SSN.
  • United States resident aliens who must file taxes, and their spouses.
  • Foreign nationals who must file taxes.

Who Needs an ITIN?

An Individual Taxpayer Identification Number (ITIN) is designed for individuals who are not eligible for a Social Security Number (SSN) but still need to file federal taxes. The IRS issues ITINs to ensure tax compliance among non-resident aliens, foreign nationals, and certain dependents or spouses who have U.S. tax obligations.

Common reasons why someone needs an ITIN include:

  • Filing a U.S. federal tax return as a non-resident or resident alien.
  • Being a foreign spouse or dependent of a U.S. citizen or resident alien.
  • Being a foreign individual claiming tax treaty benefits.
  • Being a foreign national investor or business owner who earns income in the U.S.

However, an ITIN is not a business tax ID and does not grant work authorization or U.S. residency.

Employer Identification Number (EIN)

An Employer Identification Number (EIN) has nine digits. It is sometimes referred to as a Federal Tax Identification Number. The IRS issues an EIN in order to identify a business. Consider that an EIN is like a SSN for your business. In order to lawfully operate a company in the United States, an EIN is required.

It is mandatory for the following entities to obtain an EIN number in order to operate:

  • Governmental agencies.
  • Limited liability companies.
  • NGOs.
  • Partnerships.
  • Corporations.
  • Sole proprietorships.
  • Trusts.

There are specific requirements that individuals must meet in order to qualify for an EIN number. They include:

  • Operating a partnership, corporation, or a sole proprietorship.
  • Compensating your employees up to $600 or more.
  • Holding wages and other income tax for non-residents.
  • Operating a non-profit organization.
  • Holding a tax-deferred pension plan.
  • Filing taxes for alcohol, tobacco, firearms, excise, and employment.
  • Working with estates, trusts, farmers' cooperatives, and real estate mortgage investments.

How to Apply for an ITIN

If you need an ITIN for tax purposes, you must complete IRS Form W-7 (Application for IRS Individual Taxpayer Identification Number) and submit it with the required documents.

Steps to apply for an ITIN:

  1. Fill out Form W-7 – The form requires your personal details, reason for applying, and tax identification information.
  2. Provide proof of identity and foreign status – A valid passport (the only stand-alone document accepted) or a combination of two other identity documents (such as a birth certificate, national ID, or visa).
  3. Include a federal tax return – Most applicants must submit their first tax return alongside their Form W-7 unless they qualify for an exemption (e.g., certain foreign investors, scholarship recipients).
  4. Submit the application – ITIN applications can be submitted:
    • By mail to the IRS at the designated ITIN processing center.
    • Through an IRS-authorized Acceptance Agent who can verify identity and submit the application.
    • In person at an IRS Taxpayer Assistance Center (appointment required).
  5. Wait for processing – The IRS typically processes ITIN applications within 7 weeks, but processing times may be longer during peak tax season.

How to Open a Business in the United States Without an ITIN Number

There is a misconception that in order to form a business in the United States an ITIN is required. This is why there are often many questions from foreign business owners asking how to open a company without having an ITIN number. It is important to remember that in order to establish a company in the United States an EIN must be obtained, not an ITIN number

To clarify, businesses use EINs and not ITINS. However, if you are a resident alien or a foreign national without an SSN and must file taxes, and you are planning on starting a sole proprietorship or a single-member limited liability company (LLC), you will require an ITIN in order to complete the company's taxes. An EIN will still also be needed.

In order to form a corporation in the United States, you do not have to be a citizen. An individual who is not a citizen looking to start a business can easily obtain an employer identification number as long as three criteria are met:

  • The company is based in the United States.
  • The individual wanting to formulate the business has been granted an ITIN.
  • Only one employer identification number is needed per day.

If you are not a citizen of the United States, you do not need a SSN or ITIN in order to obtain an EIN.

ITIN vs. EIN vs. SSN: What’s the Difference?

Many people confuse an ITIN, EIN, and SSN, but they serve different purposes:

Identification Type Who Needs It? Purpose
SSN (Social Security Number) U.S. citizens, permanent residents, and certain work-authorized individuals Used for employment, tax filing, and Social Security benefits
ITIN (Individual Taxpayer Identification Number) Foreign nationals and others who are not eligible for an SSN but must file U.S. taxes Used for tax reporting and compliance
EIN (Employer Identification Number) Businesses, including LLCs, corporations, and partnerships Used for business tax reporting, hiring employees, and opening business bank accounts

Key Points to Remember:

  • Business owners need an EIN, not an ITIN, to operate legally in the U.S.
  • If you're a sole proprietor or single-member LLC and are required to file taxes but don’t qualify for an SSN, you may need an ITIN in addition to an EIN.
  • ITINs do not grant work authorization, and they do not replace an SSN.
  • Unlike SSNs, ITINs must be renewed if they expire before tax filing.

Frequently Asked Questions 

  1. Can I get an ITIN without a tax return?
    Yes, but only if you qualify for an exception, such as being a non-resident investor or scholarship recipient.
  2. How long does it take to get an ITIN?
    It usually takes 7 to 11 weeks for the IRS to process an ITIN application, but it may take longer during peak tax seasons.
  3. Can I use an ITIN to open a business bank account?
    No, most banks require an EIN or SSN to open a business account, not an ITIN.
  4. Do I need an ITIN to start a business in the U.S.?
    No, you do not need an ITIN to start a business, but you may need one to file business taxes if you do not have an SSN.
  5. How do I renew my ITIN?
    If your ITIN expires, you must submit Form W-7 with updated identification documents before filing your next tax return.

If you need help with how to get a ITIN number for business, you can post your legal need to UpCounsel's marketplace. Upcounsel accepts only the top 5 percent of lawyers to its site. Lawyers on UpCounsel come from law schools such as Harvard Law and Yale Law and average 14 years of legal experience, including work with or on behalf of companies such as Google, Menlo Ventures, and Airbnb.