Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

Understanding your LT40 Notice

We’re trying to collect unpaid taxes from you. In order to do so, we may contact others to get or verify your contact information.

What you need to do

  • Pay the balance due.
  • If you’ve already paid, call the telephone number listed on the letter.
  • If you’re unable to pay the balance due, contact the telephone number listed on the letter.

You may want to

Call us to review your account at the number listed at the top of your letter.

Answers to common questions

What type of information will you provide to these third parties?

We’ll generally need to tell them limited information, such as your name. The law prevents us from disclosing any more information than is necessary to obtain or verify the information we need.

How long will you contact these third parties?

We may continue as long as there’s activity on your account.

How will I know who you contact?

We’ll send you a copy of the contact list once of year. If you don’t receive a list, it means we didn’t contact anyone who we’re required to advise you of.

Printable samples of this notice (PDF)

How to get help