Information regarding browser or device support

Oh no! We may not fully support the browser or device software you are using !

To experience our site in the best way possible, please update your browser or device software, or move over to another browser.

We can help resolve your tax issues. Call (855) 580-9375 today.


What is a CP21B notice?

Mark Steber

Chief Tax Information Officer

Published on: June 26, 2020

IRS notices are letters sent to inform taxpayers of important tax information. Each one is different, but we can explain what the CP21B is about.

Understanding your CP21B notice

You requested changes to your tax return. The IRS made the changes and will be sending you a tax refund within 2-3 weeks of this notice.

Type of Notice 

Refund notice

Why you received the CP21B notice

You received a CP21B notice because you asked for a change to your tax return. The IRS corrected your return and you will be receiving your tax refund within 2-3 weeks.

Likely next steps

As always, carefully read the notice, which will summarize the changes you requested.

If you disagree with the changes the IRS made, you need to contact the IRS at the toll-free number listed on the CP21B in the top right-hand corner or via mail within 60 days.

About the Author

Mark Steber is Senior Vice President and Chief Tax Information Officer for Jackson Hewitt. With over 30 years of experience, he oversees tax service delivery, quality assurance and tax law adherence. Mark is Jackson Hewitt’s national spokesperson and liaison to the Internal Revenue Service and other government authorities. He is a Certified Public Accountant (CPA), holds registrations in Alabama and Georgia, and is an expert on consumer income taxes including electronic tax and tax data protection.

More about Mark Steber Our Editorial Policy

Owe back taxes? Jackson Hewitt® can help.

Start resolving your tax issues today.

When every dollar matters, it matters who does your taxes™


    Our Tax Pros will connect with you one-on-one, answer all your questions, and always go the extra mile to support you.


    We have flexible hours, locations, and filing options that cater to every hardworking tax filer.


    We’ve seen it all and will help you through it all. Over 40 years of experience and our guarantees back it up.