The IRS uses Notice CP23 to inform you of changes to your return because of an error in estimated tax payments and you have a balance due.
Respond to Notice CP23
At a minimum, review your payments to the IRS and see if you agree. The IRS may have misplaced or misdirected some of the payments. If you do not agree, contact Mr. Hopkins so he can devise an Action Plan for dealing with this problem.
Be careful what you say and send to the IRS. These will be used against you! Also, after you respond to the IRS, don't be surprised if you receive a Letter 86C transferring the file to another office or a Letter 2645C asking for more time! But, don't depend on the IRS - you must maintain contact! Follow the Prep Steps & contact J. David Hopkins if there are any problems!