Getting an ITIN or Social Security Number When You've Never Filed: A Complete Guide for New US Filers

Getting an ITIN or Social Security Number When You've Never Filed

If you've never filed a US tax return but now have income, investment, or residency obligations in the United States, you need a tax identification number. For those ineligible for a Social Security Number (SSN), an Individual Taxpayer Identification Number (ITIN) serves the same purpose. Both are nine-digit identifiers that allow you to file returns, claim refunds, and comply with US tax law. This guide walks you through obtaining one, even if you've never had any prior filing history.

---

What's the Difference Between an ITIN and an SSN?

Social Security Number (SSN)

An SSN is issued by the Social Security Administration (SSA) primarily to US citizens and certain eligible non-citizens. It's used for employment, Social Security benefits, credit building, and tax purposes. If you are authorized to work in the US, an SSN is typically the appropriate choice.

Individual Taxpayer Identification Number (ITIN)

An ITIN is issued by the IRS to non-US citizens and resident aliens who are ineligible for an SSN but have US tax obligations. It allows you to file tax returns, claim refunds, and meet IRS reporting requirements without requiring work authorization. ITINs are especially common among expats, visa holders, and self-employed non-citizens with US-sourced income.

The key question: Do you have authorization to work in the United States? If yes, pursue an SSN through the SSA. If no, or if you're a non-resident with US income, an ITIN is your path forward.

---

Who Needs an ITIN or SSN?

You likely need a tax identification number if:

• You earn self-employment or business income from a US source
• You are a resident alien or non-resident alien with US-source income (investment income, rental income, consulting fees)
• You own US real estate or have US bank accounts
• You are a spouse or dependent filing jointly or separately with someone who has US tax obligations
• You are eligible to claim a US tax refund
• You are an expat returning to the US or a foreign national establishing US presence

Refer to the IRS's official guidance on ITINs for detailed eligibility criteria.

---

The ITIN Application Process: Form W-7

Step 1: Gather Required Documents

The IRS requires you to submit proof of identity and proof of residency (or legal presence) with your ITIN application. Acceptable documents include:

Identity Documents:

• Passport (most commonly accepted)
• National ID card
• Visa or travel document
• Birth certificate (with supporting ID)

Residency / Legal Status Documents:

• Visa
• I-94 / I-94A arrival-departure record
• I-20 (for students) or DS-2019 (for exchange visitors)
• Asylum or refugee documentation
• Green card or employment authorization card

Documents must be original or certified copies. The IRS will not accept photocopies unless certified by the issuing authority or a consulate.

Step 2: Complete Form W-7

File Form W-7, Application for IRS Individual Taxpayer Identification Number with the IRS. The form is straightforward but must be completed accurately. You will declare:

• Your legal name and date of birth
• Your country of citizenship
• Your reason for requesting an ITIN (e.g., "US tax resident alien," "US nonresident alien with US-source income")
• Whether you are filing a joint return or claiming dependents

Step 3: Submit Your Application

You have three primary options:

1. By mail with an attached tax return. File Form W-7 with supporting documents and your completed tax return (e.g., Form 1040) in a single package to the IRS.

2. In person at an IRS office. Schedule an appointment at your nearest IRS office for document authentication.

3. Through an Acceptance Agent. Authorized banks, accounting firms, and nonprofits can certify your documents on behalf of the IRS.

Submitting an application alongside a tax return (Option 1) is often the fastest route, as it demonstrates genuine tax-filing intent.

Step 4: Processing and ITIN Approval

Processing times typically range from 4 to 6 weeks for mailed applications. The IRS will issue your ITIN by mail once approved. Your ITIN is valid for filing purposes and does not expire as long as you file at least one federal income tax return every three years.

Once you have your ITIN, you can file your return, claim refunds, and meet compliance obligations.

---

Obtaining an SSN: The Path for Those Eligible to Work

If you have been authorized to work in the United States (either as a US citizen, permanent resident, or on a valid work visa), apply for an SSN through the Social Security Administration (SSA), not the IRS.

Required Documents:

• Proof of age (birth certificate or passport)
• Proof of citizenship or legal work status (passport, visa, I-20, green card, or work permit)
• Proof of identity (same as above)

Application Process:

1. Visit your local Social Security office or apply online if you are a citizen.

2. Complete Form SS-5.

3. Bring originals or certified copies of your documents.

4. Expect approval within 1–2 weeks.

Once assigned, your SSN is yours for life and serves all employment, credit, and tax purposes.

---

What Happens After You Get Your ITIN or SSN?

Once you have your number, the real work begins.

File Your First Return

Your initial tax return establishes your filing history with the IRS. If you've never filed before, you'll need to:

1. Determine your filing status — Single, married filing jointly, head of household, etc.

2. Calculate your US-source income — Wages, self-employment, rental, interest, capital gains, or other income connected to the US.

3. Identify applicable credits and deductions — Standard deduction, earned income tax credit (EITC), education credits, or other relief.

4. File the appropriate form — Form 1040 (standard return), Form 1040-SR (if 65+), or specialized schedules for business or rental income.

For expats and those with complex situations — especially if you've lived abroad, have multiple jurisdictions of income, or are considered an "accidental American" — professional guidance is invaluable. Our firm specializes in helping accidental Americans and expatriates navigate their first filing, ensuring compliance and maximizing refunds.

Consider State and Local Taxes

Federal tax is only one part of the picture. Many states require filing if you have income sourced in that state, even if you reside elsewhere. Some states (such as California) are particularly aggressive in enforcing this.

Update Bank and Employer Records

Once you have your ITIN or SSN, provide it to:

• Your employer (to process payroll withholding)
• Your bank or investment firm (for interest and dividend reporting)
• Any client or vendor paying you self-employment income

Withholding accuracy depends on this.

---

Common Scenarios: Who Benefits from Getting an ITIN or SSN Now?

Expats Returning to the US

If you're a US citizen or green card holder who hasn't filed for years, you need to reestablish compliance. Secure your ITIN or SSN and file a back-filing strategy with professional support.

Non-US Citizens with US Investment Income

If you're a UK, UAE, or other foreign national with US rental property, stock dividends, or bond interest, you need an ITIN to file and claim treaty benefits that reduce withholding tax.

Remote Workers for US Employers

Foreign nationals employed by US companies need an ITIN or SSN to receive proper tax withholding and avoid IRS penalties.

Spouses of US Citizens or Residents

A non-citizen spouse may benefit from filing jointly with an SSN or ITIN, especially to claim refundable credits like the EITC. Some couples who file as "married filing jointly" using an ITIN for the non-citizen spouse unlock significant tax relief.

Self-Employed Founders and Freelancers

If you run a business and have any US income, you'll need an ITIN to file Schedule C and pay estimated taxes.

---

Common Pitfalls and How to Avoid Them

Incomplete or Incorrect W-7 Submission

Missing documents or errors in your application delay approval. Double-check all fields and ensure documents are originals or certified copies.

Confusing ITIN with SSN

Applying for both simultaneously wastes time and creates confusion. Determine eligibility first.

Not Filing Every Three Years

If you obtain an ITIN but fail to file a return for three consecutive tax years, your ITIN is suspended. If you need to reactivate it, you must reapply.

Overlooking State and Local Obligations

Securing a federal ITIN does not exempt you from state tax law. Research your state's requirements separately.

Filing Without Professional Guidance

First-time filers with international income often make costly mistakes—missed deductions, improper treaty application, or incorrect income reporting. Professional review is worth the investment.

---

Expats and the Special Case of Accidental Americans

If you are a US citizen or permanent resident living abroad, or if you unexpectedly discovered you have US citizenship or tax residency status, you face unique challenges. Many expats have never filed because they didn't realize they were required to, or because prior advisors didn't properly guide them.

Our firm has extensive experience helping accidental Americans and expats file their first returns and enter compliance. We understand the nuances of:

• Foreign Earned Income Exclusion (FEIE) calculations
• Foreign Tax Credit claims
• FBAR and FATCA reporting for overseas accounts
• Statute of limitations and voluntary disclosure for prior years

If you're in this position, securing your ITIN or SSN is just the first step. Working with a qualified advisor to manage all aspects of your filing obligation is essential.

---

Next Steps: Get Professional Support

Obtaining an ITIN or SSN is straightforward if you follow the process carefully. However, filing your first return—especially if your income spans multiple countries or tax jurisdictions—requires expertise.

At Next Tax Source, our licensed professionals (including IRS Enrolled Agents and ACCA-qualified accountants) review and sign every filing. We have deep experience with US, UK, and UAE tax law, and we specialize in helping business owners, founders, and expats navigate their first filing.

Ready to get compliant? Book a consultation with our team to discuss your ITIN or SSN application and first-time filing strategy. We'll ensure your paperwork is complete, your number is issued quickly, and your return is filed correctly.