IRS letters

CP523. Installment agreement default.

The IRS says CP523 means it intends to terminate an installment agreement and levy assets because the agreement is in default.

General information from the Law Office of Alexander Powell, PLLC. It is not legal advice, and it is not a substitute for the notice itself.

On the paper

Look for the missed payment, filing issue, or other reason stated in the notice. Compare it with your payment records.

Find the date printed on your notice or letter. The paper notice and the current official IRS instructions control, even where this page differs.

General next steps

  1. Check whether the payment identified in the notice cleared your bank or IRS account.
  2. Review whether required returns and payments were filed or made as described in the agreement.
  3. Follow the notice instructions promptly if you believe the default is an error or need to discuss the agreement.

Timing

The IRS says to contact it as soon as possible and no later than 30 days from the date of the notice. Your CP523 controls the action date.

What this page cannot tell you

This page does not determine whether the agreement should be reinstated or modified.

Official sources

If anything on this page differs from your notice or from current IRS instructions, follow the notice and the IRS.

If you want a lawyer’s help

Questions after reading the letter?

You can ask the Law Office of Alexander Powell, PLLC to consider a consultation about any IRS or tax letter. Requesting a consultation does not make Mr. Powell your lawyer, provide legal advice, or protect a deadline. Representation begins only after a conflict check, after the firm agrees to the matter, and after both sides sign a written engagement agreement.

Start here