How to find customer file number irs

The Work Number is a database that organizations can use to verify employment and income information. The Work Number is the largest central repository of payroll information in the United States, with over 2.5 million employers including small, medium, and Fortune 500 companies contributing payroll records.

The information on The Work Number database is provided by nearly 2.5 million employers who rely on Equifax Verification Services to fulfill income and employment verifications on behalf of their employees. These verifications are used to provide consumers with access to the credit and services they deserve.

Each record available via The Work Number describes an individual’s employment with a specific employer. The Work Number currently provides access to more than 119 million active records, and growing. One person may have multiple employment records on the database. For example, if someone has held several jobs, there may be records of employment with multiple employers, including current and previous employers.

Equifax receives new information directly from employers' payroll systems on a per-pay-period basis — each time an employer runs payroll. Employers send us information in a secure, specified file format at specified time intervals. That information is instantly loaded into Equifax employment and income database, The Work Number. This helps ensure that current information, as provided by employers, is available to credentialed businesses that need help verifying employment for a mortgage or other types of lending.

Equifax Verification Services helps organizations verify applicant income and employment information. The employment and income records on The Work Number database are provided by more than one million small, medium, and large employers nationwide and are updated each payroll cycle. The Work Number database can be accessed through system-to-system integration, via batch processes or by logging into our website. The employment and income information is updated by employers each pay cycle.  

A verifier is a person or organization that needs to verify a borrower or applicant’s employment or income information. Only credentialed verifiers with a permissible purpose under the FCRA are allowed to access the income and employment information on The Work Number database.

Hundreds of thousands of verifiers from a wide range of industries use The Work Number.

As part of the federal verification process, you may be required to provide a copy of an IRS Tax Return Transcript to confirm the information filed on your federal tax return.

An IRS Tax Return Transcript can be obtained:

  • ONLINE: Visit www.irs.gov. Click on Get Your Tax Record, and then click on Get Transcript Online or Get Transcript by Mail.
    • Online requests require the Social Security number, filing status and mailing address from the latest tax returns, an email account, a mobile phone with your name on the account, and your personal account number from a credit card, mortgage, home equity loan, home equity line of credit or a car loan.
    • If you do not have all of the above, you will need to use an IRS Form 4506-T to request a copy of your tax return transcript. (See below.)
  • PHONE: Call 1-800-908-9946.
  • PAPER: Complete an IRS Form 4506-T, available at https://www.irs.gov/pub/irs-pdf/f4506t.pdf, and submit it to the IRS as indicated on the form.
    • On the form, check Box 6a, "Return Transcript," to request the tax return transcript. Please complete all appropriate sections on the form to identify yourself, indicate the appropriate dates in Section 9, and sign the form, making sure to check the Signature check box.
    • Because the tax transcript will not include your USC ID number, DO NOT have it sent directly to USC. Have it sent to you so that you can upload a copy of it through FAST.


PLEASE NOTE: You must enter names, Social Security numbers and street addresses exactly as they appear on the latest tax return. Joint tax filers must both be listed, in the order they appear on the tax return.


Step-by-step instructions for completing the paper form:

1a   The first and last name as shown on the tax return. If you submitted a joint return, enter the name shown first.
1b   The first Social Security number used on the tax return.
2a   If applicable, spouse's first and last name as shown on the tax return.
2b   If applicable, spouse's Social Security number as shown on the tax return.
3     Current name of the first tax filer and address, city, state and zip code. This is the address where the IRS will send the transcript.
4     Previous address shown on the last tax return if different from line 3.
5     Leave blank
6     Enter 1040.
6A  Check this box to request the tax return transcript. Do not select 6B or 6C.
7     Leave blank.
8     Leave blank.
9     Enter December 31, 2020, to request a transcript for the correct tax filing period.


Signature Section:

  • Fill in the Attestation Box.
  • Sign and date the form, and include your phone number.
  • At least one tax filer needs to sign the form for a joint return.


Mail the form to the IRS at the appropriate address provided in the middle column of page 2. Please do not submit IRS Form 4506-T to the university.

How do I know my customer file number?

Customer File Number The number is usually provided by third parties to assist with matching a transcript to a taxpayer. Forms 4506-T and 4506-T-EZ include a field where a Customer File Number can be entered to display on the transcript.

What is the customer file number on form 4506

A Customer File Number is a 10-digit number that is made by a third party and can be entered into the transcript request. To request a copy of transcripts a Form 4506-T, Request for Transcripts of Tax Return, is necessary. This form is used to request prior year and current year tax records.

Where can I find my cycle code?

The IRS cycle code is an eight-digit number that you can find on your online tax transcript once your return has been posted to the IRS Master File. If you see a cycle code along with transaction code 150, you'll know that your tax return is being processed.

How do I get a tracking number from the IRS?

The Tracking Number will contain 16 or 20 digits. Copy the Tracking Number associated with your EFIN into the space provided in the Company Tab in your Account Hub. The Tracking Number will be verified by the IRS to prevent unauthorized use of your EFIN.