In either case, these notices indicate that you’ve requested changes to your tax return and the IRS has agreed to those changes. The difference in the two forms is whether or not you’ll be receiving a refund because of those changes. A CP21B is an indicator that you will receive a refund, and a CP21C shows that you will not receive a refund, and you neither owe an additional amount nor will you receive a refund.
If you disagree with the CP21C notice or need to make further corrections, you will need to file Form 1040X, “Amended U.S. Individual Income Tax Return.” On the CP21B, if you disagree, the IRS recommends contacting them directly.
In the event that you have not requested a change to your tax return, and you suspect identity theft, you may want to check the IRS’s page on Identity Protection
If you are uncertain as to how to complete the form or have questions, either call the IRS directly or call your tax attorney who can explain your options. The attorneys at Ourednik Law Offices are experienced in handling these types of situations. Call us today for this or any type of IRS notice you may receive at (904) 396-8080.