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 CP301 Notice

What this notice is about

We sent you this notice to confirm that you registered for an IRS online service.

You need to take an additional action if you didn't initiate this registration or if you requested an activation code to complete registration.

What you need to do

  • If you didn't initiate this registration when accessing one of our online services, immediately call the number on your notice to disable your account.
  • If you requested an activation code by mail, to complete your registration you must:
    • Log into Get Transcript or Identify Protection PIN (IP PIN).
    • Enter the activation code from your notice.
    • NOTE: You’ll also need a U.S.-based mobile phone, which we’ll use to text a security code each time you log in.
  • If you already completed your registration, no action is necessary.
    • Use your username and password each time you access one of our online services.
    • Have your mobile phone accessible if you registered your number for the service you used.
    • Make sure you recognize your site image and site phrase each time you sign in.
    • Keep your registration profile data current. We'll send you a confirmation email each time you update your profile.
    • Review your recent account activity each time you sign in and call the number on your notice if you find suspicious activity.

Answers to common questions

What happens if someone else used my personal information to register online at IRS?

If you didn't initiate this registration, immediately call the number on your notice. Once we verify your identity, we’ll disable your online account.

Can I use the same username and password I created for a different IRS online tool?

Yes. You can use the same username and password for the following services:

  • Get Transcript
  • Identity Protection PIN (IP PIN)
  • Online Protection Agreement (OPA)
  • e-Postcard

I forgot my username and password I created online. Can I still use the system?

Yes. Access the online service you need and choose “forgot username or password” during the login process.

Printable samples of this notice (PDF)

Your notice may look different from the sample because the information is tailored to your situation.

How to get help