Which phone number do you want sent to the IRS and state Department of Revenue if applicable with your tax return?
John Thompson
Published Mar 03, 2026
You can call 1-800-829-1040 to get answers to your federal tax questions 24 hours a day.
How do I get directly to the IRS customer service?
Contact an IRS customer service representative to correct any agency errors by calling 800-829-1040. Customer service representatives are available Monday through Friday, 7 a.m. to 7 p.m. local time, unless otherwise noted (see telephone assistance for more information).
How to respond to the IRS CP2000 notice?
Contact us with any unanswered questions you have or if you need time to respond to the notice. Keep a copy of the notice for your records. Fill out section 3 (authorization) on the response form to allow someone, in addition to yourself, to contact us about this notice.
What to do when you receive a cp75 notice?
Read the notice and the enclosed forms carefully. They explain the information you must send to us. Provide copies of the documentation we request to verify the items we’re auditing. Complete the Response form by showing which items your supporting documentation addresses and return the form with the documents you are submitting.
Do you need to amend your CP2000 return?
If the information displayed in the CP2000 notice is correct, you do not need to amend your return unless you have additional income, credits or expenses to report. If you agree with our notice, follow the instructions to sign and return the response form in the envelope provided or fax it to the number shown on the notice.
When do I get a notice from the IRS?
No, the notice is a proposal and informs you of a discrepancy between the information we received and the information reported on your tax return. If the discrepancy remains unresolved, or we don’t receive a response to the notice, you may receive a subsequent notice and a bill at a later date.
