If you purchased Audit Defense for your 2021 tax return, call TaxAudit at 877-829-9695, or report your IRS letter on the TaxAudit.com web site. Do not contact the IRS until you have spoken to TaxAudit. They may contact the IRS on your behalf.
If you did not purchase Audit Defense, you can get help with your IRS letter from TurboTax at the following link.
We can help you with your tax letter
If you did not buy Audit Defense, we might be able to help you here. Tell us what the notice says, and the notice number or letter number (starting with CP or LTR) at the top right.