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 CP123 Notice

We made changes to your excise tax return because we believe there was a miscalculation. You now have a balance due of less than $1.


What you need to do

  • Read the notice carefully.
  • Compare the figures on the notice with your excise tax return.
  • Contact us within 30 days of the date of your notice if you disagree with the changes we made.
  • Correct the copy of your excise tax return that you kept for your records if you agree with our changes.
  • You don’t have to pay if you owe less than $1.

Answers to common questions

How can I find out what caused my tax return to change?

Call us at the toll-free number listed on the top right corner of your notice for specific information about your tax return.

What should I do if I disagree with the changes you made?

Call us at the toll-free number listed on the top right corner of your notice or write to us within 30 days of the date of the notice. We may be able to reverse the changes.


Tips for next year

Review your return for accuracy before mailing it to us.