VALID › Notice Library › CP240 notice

In the IRS’s own words · not reviewed by VALID

CP240 notice explained, in the IRS’s own words

We changed your return because we found differences between your employment tax return and the income reported on your W-2, W-2G and 1099R forms.

Read the full CP240 page on irs.gov ↗

Quoted from www.irs.gov/individuals/understanding-your-cp240-notice, read October 15, 2026 · fingerprint e708b2835c23

What this notice is about

We changed your return because we found differences between your employment tax return and the income reported on your W-2, W-2G and 1099R forms.

What you need to do

  • If you have a balance, pay the amount owed by the date shown on your notice.
  • If you can't pay the full amount, visit our payments page for information about other ways to pay.
  • If you disagree with the changes, contact us within 30 days from the date of your notice.

How can I find out what amounts didn’t match?

Call us at the number listed on your notice.

Will I receive a penalty if I can't pay the full amount?

Yes, you could be charged a penalty. If you were charged a penalty. your notice will explain how we calculated that penalty.

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.

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