VALID › Notice Library › CP123 notice
In the IRS’s own words · not reviewed by VALID
CP123 notice explained, in the IRS’s own words
We made changes to your railroad retirement tax return because we believe there was a miscalculation.
Read the full CP123 page on irs.gov ↗
What this notice is about
We made changes to your railroad retirement tax return because we believe there was a miscalculation.
What you need to do
- Read the notice carefully.
- Compare the figures on the notice with your railroad retirement 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 railroad retirement tax return that you kept for your records if you agree with our changes.
How can I find out what caused my tax return to change?
Call us at the telephone number listed on 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 telephone number listed on 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.
What to do next
- Write down the date on the letter today.
- Look the number up on irs.gov yourself. Don’t trust a link or phone number from anyone else.
- If it says you owe money or proposes changes to your return, take it to a licensed CPA, EA or tax attorney before that date.
Not advice. Not a filing. Verify with a licensed professional. Rules change by year and facts.