Got a cp23 letter where there's a 5k discrepancy between turbotax and them. How is this possible????

what it's about

IRS changed your return because it found a difference between the amount of estimated tax payments on your tax return and the amount we posted to your account.

What you need to do

• Read your notice carefully. It will explain how much money you owe on your taxes.
  • Compare the payments on the notice to your records:
    • Verify we listed all your estimated tax payments.
    • Check the payments we applied (if any) from the prior year.
• If you agree with the changes we made,
  • Pay the amount owed by the date on the notice.
  • You may do this online at Payments.
  • Establish a Payment Plan or Installment Agreement if you can't pay the full amount you owe.
  • You may do this using the Online Payment Agreement tool, or by contacting us at the  number on the notice.
  • Correct the copy of your tax return that you kept for your records. Don’t send your copy to us.
• If you don’t agree, contact us within 60 days from the date of your notice and see “Answers to Common Questions” below.
  • By telephone: Call us at the toll-free number shown on your notice. Some cases require additional information that you may provide verbally. Either way we may be able to correct your account immediately.
  • By mail: Please include a copy of the notice along with your correspondence or documentation and allow 30-60 or more days for a resolution.

Since you are the one that entered the estimated tax payments any errors in what was entered would be your fault. Turbotax accuracy guarantee would not apply.