How to Apply for an ITIN
If you cannot get a Social Security Number but need to file a US tax return, you may need an ITIN. The process is common, and getting help from a licensed accountant who works with ITIN filers can make it much less stressful.
What an ITIN is, in plain English
An ITIN is an Individual Taxpayer Identification Number. It is a tax-processing number issued by the IRS for people who need to be on a US tax return but are not eligible for a Social Security Number.
People use ITINs for tax filing. That can include workers, spouses, dependents, and some small-business owners. Filing taxes with an ITIN is normal and expected for many immigrants and mixed-status families.
A few important points:
- An ITIN is not a work permit.
- An ITIN is not immigration status.
- An ITIN does not change whether someone can legally work in the US.
- An ITIN is mainly for federal tax reporting and processing.
If you are unsure whether you need an ITIN, an SSN, or neither, talk with a licensed accountant, such as a CPA or IRS Enrolled Agent, who has experience with ITIN filers. BalancedRow is a free matching service. We do not give tax or legal advice, but we can help you get matched with a licensed accountant and you can also read more on ITIN and immigrant tax help.
The short answer: how the application usually works
Most people apply for an ITIN by sending Form W-7 to the IRS with a federal tax return and documents that prove identity and foreign status.
In simple terms, the usual process looks like this:
- Find out if you truly need an ITIN. If you can get an SSN, the IRS generally expects you to use that instead.
- Prepare your federal tax return for the year you need to file.
- Complete Form W-7, the IRS application for an ITIN.
- Gather proof of identity and foreign status. A passport is often the simplest document if it meets the IRS rules.
- Submit the package the right way. Many people apply by mail with the tax return, or with help from an authorized acceptance agent or other qualified professional.
- Wait for IRS processing. If the IRS approves the application, it issues the ITIN and processes the return.
That is the basic path. The details matter, though. Errors on the W-7, missing signatures, the wrong supporting documents, or a return that does not match the application can cause delays.
If your situation is not simple, or if this is your first US tax filing, it is smart to hire a licensed CPA or IRS Enrolled Agent who regularly handles ITIN cases. Before sharing anything sensitive, verify the credential and PTIN yourself through the IRS Directory of Federal Tax Return Preparers and, for CPAs, the state board of accountancy. Then confirm the fee and scope in writing before any work starts.
Who usually needs an ITIN and what documents come up
You may need an ITIN if you must be included on a US tax filing but cannot get an SSN. Common situations include:
- You have US tax filing or reporting requirements but are not eligible for an SSN.
- You are the spouse or dependent of someone filing a US tax return and an identification number is needed on the return.
- You are a nonresident or resident for tax purposes and need to file or be listed on a tax return.
- You own or help run a small business and need to handle your personal tax filing correctly.
The IRS has specific rules about who qualifies. A licensed accountant can explain how those rules apply to your case, but they should not guess. They should review your facts carefully.
Documents matter a lot in ITIN applications. The IRS generally wants documentation that proves:
- Identity
- Foreign status
A passport is often the strongest single document because it can cover both categories, but not every person will have the same paperwork. Some applicants may need a combination of documents depending on their situation and the IRS rules in effect.
A few practical tips:
- Make sure names, dates of birth, and addresses are consistent across the return and supporting documents.
- Do not ignore IRS letters. If the IRS asks for more information, respond by the deadline.
- Keep copies of what was sent and when it was sent.
- If you moved, make sure the mailing address on the return is one where you can safely receive IRS mail.
If you also need help understanding the tax return itself, not just the ITIN application, a licensed accountant can help you understand the process and typical costs. For example, an individual tax return often runs about $180-$500 as a typical range, while a small-business return often runs about $500-$1,800. Those are estimates only, not quotes. The real fee depends on the work involved, your situation, the records you bring, and your area. You can compare more typical ranges on our pricing page.
What small-business owners and self-employed ITIN filers should know
If you run a small business, drive for apps, freelance, clean houses, do construction, sell online, or do contract work, your tax situation can get more complicated fast. An ITIN can be part of the picture, but it does not replace good records.
Here is where people often get burned:
- They mix personal and business spending.
- They wait until tax season to sort receipts.
- They guess at income instead of using real records.
- They hire someone unlicensed who promises a huge refund.
- They share bank logins, passport images, or tax documents before verifying who they are dealing with.
A licensed accountant can help you understand what records are needed and what work may be required for your tax return. If your books are behind, that may increase the fee. Typical monthly bookkeeping often falls around $150-$600 per month depending on volume. Payroll often runs around $40-$120 per month plus a per-employee charge. Those are only typical ranges and your actual cost depends on the work, your records, and your area.
If you are self-employed or own a small company, it can help to learn the difference between small-business accounting and tax filing. Good bookkeeping during the year often makes tax season cheaper and less stressful.
Most of all, do not feel embarrassed if you are behind. Many new immigrants and first-time business owners are learning US systems while working long hours. Getting organized and asking for help is a smart move, not a failure.
How to get help safely and what to do next
If you think you need an ITIN, or you already have one and need help filing taxes correctly, the next step is to speak with a licensed CPA or IRS Enrolled Agent who works with ITIN filers.
Use this checklist:
- Ask if they regularly work with ITIN cases. Not every accountant does.
- Verify the credential and PTIN yourself. Use the IRS Directory of Federal Tax Return Preparers and the state board of accountancy for CPAs.
- Ask for the fee and scope in writing. Get clear on what is included, what is not included, and what extra work could cost more.
- Do not share sensitive information until you have verified them. Never send your Social Security Number, ITIN number, bank login, or tax documents to anyone you have not verified.
- Keep control of your documents. BalancedRow collects only contact and request details for matching. We never ask for SSNs, ITIN numbers, financial-account numbers, or tax documents.
BalancedRow is free to use. We are not an accounting firm and we do not prepare returns or give advice. We help you compare options so you can choose who to hire. If you want help finding someone experienced with ITIN filings, start here: get matched.
If you are comparing credentials, this guide may also help: CPA vs EA vs tax preparer.
If you cannot get an SSN but need to file US taxes, you may need an ITIN. The safest move is to hire a licensed CPA or IRS Enrolled Agent who works with ITIN filers, verify their credential and PTIN yourself, get the fee in writing, and never share sensitive documents until you have verified who they are.