15106

Request for Updated Taxpayer Information

Agency
IRS
Revision
July 2017
Fillable fields
18
Pages
1
Official source
IRS form page
Checked
October 21, 2026
Fill 15106 online
Page 1 of form 15106

Form 15106: Request for Updated Taxpayer Information

Form 15106, Request for Updated Taxpayer Information, is a one-page Department of the Treasury, Internal Revenue Service form dated July 2017. Its subtitle reads "Help IRS Locate a Taxpayer."

The IRS lists the taxpayer's name, a case reference number and the address it has on file. The form then has two sections for the people asked to help: one marked "For Use by Post Office Only" and one for any other third party contact, who can add a different address, telephone numbers, an employer or other details that may help locate the person.

The taxpayer named on the form does not fill it out. The form prints no instructions, deadline or return address. You can fill out the PDF free in your browser on this page and download it without an account.

What's on Form 15106

Taxpayer block

Taxpayer name, case reference number, taxpayer address, city, state and ZIP code.

For Use by Post Office Only

Boxes for mail is delivered to address given, new address, not known at address given, moved left no forwarding address, box holder's street address, no such address and other (specify).

Questions 1 and 2

The taxpayer's address, if different from the one listed above, and the taxpayer's home and work telephone, if known.

Questions 3 and 4

The name and address of the taxpayer's employer, if known, and any other information that may help locate the person listed above.

How to fill out Form 15106

  1. 1

    Complete the taxpayer block

    Enter the taxpayer name, case reference number and the address on file, with city, state and ZIP code.

  2. 2

    Post office section

    Check the box that applies, such as mail is delivered to address given or moved left no forwarding address, and write a new address or box holder's street address where the form has room for one.

  3. 3

    Third party questions 1 to 3

    Enter a different address for the taxpayer, home and work telephone numbers and the employer's name and address, only if known.

  4. 4

    Question 4

    Add any other information that may help locate the person listed at the top of the form.

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Where it goes and what it does not cover

Return address

The form prints no mailing address, fax number or deadline. It carries a case reference number at the top, next to the taxpayer name.

Purpose

The form's subtitle is "Help IRS Locate a Taxpayer." It asks for location details only, not tax amounts or a return.

Only what is known

Questions 2 and 3 ask for telephone numbers and an employer "if known," so they can be left blank when the information is not known.

Related forms

Who fills out Form 15106?

  • The IRS

    The top block holds the taxpayer name, case reference number and address. Question 1 refers to it as the "address we listed above," so the IRS fills in this block.

  • The post office

    The section marked "For Use by Post Office Only" has boxes for whether mail is delivered to the address given, a new address, or why mail cannot be delivered.

  • Other third party contacts

    The Other Third Party Contact section asks for a different address, home and work telephone, an employer and any other information that may help locate the person.

  • Not the taxpayer

    The person named at the top is the taxpayer the IRS is trying to locate. The form has no signature or certification line for the taxpayer.

The form has three sections for three different people. The taxpayer it names is the person being located, not the one completing it.

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Questions about Form 15106

Who sends Form 15106?

The form is a Department of the Treasury, Internal Revenue Service form with the subtitle "Help IRS Locate a Taxpayer." The IRS fills in the taxpayer's name, case reference number and address at the top.

Does the taxpayer fill out Form 15106?

No. The taxpayer is the person being located. The sections are for the post office and for other third party contacts.

What does the post office section ask?

Whether mail is delivered to the address given, a new address, or a reason such as not known at address given, moved left no forwarding address or no such address.

What can a third party add?

A different address, home and work telephone numbers, the name and address of an employer, and any other information that may help locate the person.

Which version is this?

The PDF is dated July 2017 and its footer reads Form 15106 (7-2017).