How to Find My Individual Tax Identification Number | Clues

Your ITIN shows on past IRS letters, filed tax returns, or an IRS transcript you can request through an IRS account or by mail.

If you’ve filed a U.S. return without a Social Security number, you may have an Individual Taxpayer Identification Number, usually called an ITIN. The IRS issues ITINs for federal tax filing and reporting when an SSN isn’t available.

Most of the time, you don’t need a special “recovery” process. You just need the right record. Start with your own paperwork, then move to IRS transcripts if your copies are missing.

What An ITIN Is And What It’s Not

An ITIN is a nine-digit tax number used by the IRS to process returns and payments. It’s not a work permit. It doesn’t replace an SSN. It’s a tax identifier for people who must file or be listed on a federal return but can’t use an SSN.

Once you find your ITIN, treat it like a passport number. Keep it private. Use it consistently on federal forms until you qualify for an SSN.

Fast Places To Check First

A Filed Copy Of Your Federal Return

If you saved a PDF or paper copy of a filed Form 1040 or 1040-NR, your ITIN appears where an SSN would normally go. Open the filed copy, not a blank template. If you used software, check the final “filed” package or the print view from the year you submitted.

Your ITIN Assignment Notice

Many people receive an IRS letter that confirms their ITIN. A common one is CP565. If you still have it, your number is right there. The IRS page for Understanding your CP565 notice explains what the notice means and why you should keep it with your tax papers.

Your Tax Preparer’s Filed Copy

If someone else prepared your return, ask for the “signed and filed” copy for the year you used an ITIN. Many preparers keep archives for a set period. If your preparer is no longer reachable, move to the transcript route below.

How To Find My Individual Tax Identification Number After Moving

Moving can slow things down because mailed IRS records go to the address the IRS has on file. You can still get your ITIN with a clean sequence: make sure the IRS has your current address, then request a transcript for a year you filed with the ITIN.

Get The Address Piece Right

If you request a mailed transcript, it will be sent to the address on record. If you changed addresses, update the IRS address first through the method that fits your situation, then request the transcript.

Use An IRS Transcript When Your Return Copy Is Gone

Transcripts are summaries pulled from IRS records. They can show your taxpayer identification number and the data tied to a specific tax year. The IRS transcript page states that mailed transcripts usually arrive in 5 to 10 calendar days.

Start with Get Transcript and pick the option that fits you: an online account if you can complete identity checks, or mail delivery if you can’t.

Pick The Transcript Type That Matches Your Goal

If your goal is “what number did I file under,” a tax return transcript for a year you filed with an ITIN is usually the most direct record. If you only need account activity, a tax account transcript can help. The IRS page on Transcript types for individuals explains what each transcript includes and how to order it.

Ways To Find An ITIN And What Each Option Needs

Not every path fits every situation. This table lays out the main places people find an ITIN, what you need for each, and the snag that can slow you down.

Where To Look	What You’ll Need	Common Snag
Filed federal return (Form 1040 / 1040-NR)	Your saved copy	You only have a draft, not the filed version
CP565 ITIN assignment notice	The letter or a scan	The notice is packed away under an old address
Other IRS letters tied to your account	Old IRS mail	Some letters mask the full ID number
IRS transcript via online account	Identity verification	Account setup fails if details don’t match
IRS transcript by mail	Current address on IRS records	You moved and never updated the address
Automated phone transcript request	Phone access and identifying details	Transcript still mails to the address on file
Prior preparer’s archive	Your identity details and tax year	Retention period passed, records deleted
IRS phone help line	Full identity details and filing history	Agent can’t release data if verification fails

Step-By-Step: Pulling Your ITIN From A Transcript

Step 1: Choose A Year You Filed With An ITIN

Pick a tax year where you know you used the ITIN. If you’re not sure, start with the most recent year you filed a federal return without an SSN.

Step 2: Request A Tax Return Transcript

On the IRS transcript page, request a tax return transcript for that year. If you can’t use the online account option, request it by mail. If you use the automated phone request option listed on the IRS transcript page, the transcript will still be mailed to the address on file.

Step 3: Read The Transcript Carefully

Look for the taxpayer identification number line near your name. Save the transcript as a PDF. If you printed it, store it with your tax records.

Step 4: Write Down A Safe Backup

Store the number in a password manager or an encrypted note. Avoid emailing the number to yourself or sending it in chat messages.

Missteps That Create Delays

Applying For A New ITIN When You Already Have One

If you already have an ITIN, applying again can slow your filing and confuse matching. U.S. government guidance for a lost ITIN points people to prior returns or contacting the IRS, not submitting a brand-new application.

Filing With A Guess

A wrong nine-digit number can trigger mismatches, rejected e-file submissions, or extra IRS letters. If you’re near a deadline, request the transcript and file with the correct number.

Sharing Identity Document Scans In Unsafe Ways

ITIN paperwork can involve passport pages and other identity records. Keep scans in secure storage. Share only through a trusted portal when you work with a preparer.

When Your ITIN Exists But You Can’t Use It Yet

Some readers find their ITIN and then hit a second issue: the number expired, or they now have an SSN. Here’s how to handle those two cases.

If The ITIN Expired

The IRS states that if an ITIN expired, you must renew it if it will be included on a federal tax return. The IRS page How to renew an ITIN lays out who should renew and how to send Form W-7.

If You Received A Social Security Number

If you now have an SSN, use the SSN on new federal filings. The CP565 page notes that once an SSN is issued, you should switch to it. You can also ask the IRS to link prior ITIN tax records to the SSN so your history is in one place.

Decision Table For Common Situations

Use this as a quick chooser when you’re stuck between two paths.

Your Situation	Best Next Move	Typical Pace
You have a filed return copy	Pull the ITIN from the return and store it	Minutes
You have CP565 or another IRS letter	Use the number on the notice, then scan it	Minutes
You lost records and changed addresses	Update address, then request a mailed transcript	5–10 days
You can use an IRS online account	Download a tax return transcript for a recent year	Same day
Your ITIN expired	Renew with Form W-7 before filing the next return	Processing time varies
You received an SSN	Switch to the SSN and request record linking if needed	Varies

Small Habits That Stop Repeat Headaches

Keep A Single Tax Folder

Save your ITIN letter, your last two filed returns, and at least one transcript download in one folder. If you use cloud storage, turn on two-factor authentication and keep a local backup.

Update Your Address Before You Need Records

Do it soon after a move. That way, any transcript request or ITIN notice arrives at the right place.

Keep Your Name Format Consistent

Use the same spelling across returns when you can. It can make identity checks smoother when you request IRS records.

What To Prepare If You Call The IRS

A phone call can help if your paperwork is gone and the transcript routes aren’t working yet. Have your full name as shown on your last filed return, date of birth, current mailing address, and the last year you filed with an ITIN. If you can’t pass identity checks, the agent may not be able to share the number.

Closing Checklist Before You File

• Find the ITIN on a filed return, CP565 notice, or IRS transcript.
• Make sure your mailing address matches IRS records before requesting mail delivery.
• Store the number in a secure place and avoid casual sharing.
• If you now have an SSN, switch to it on future filings and link prior records if needed.
• If the ITIN expired and it will be on a return, renew it before filing.