We were notified by the IRS that there was an error on our return and now we owe money instead of getting a refund.

[Critter-3]

What exactly did they change ?   Was it an incorrect amount of stimulus payments received in advance ? 

I GOT A LETTER FROM THE IRS   

https://ttlc.intuit.com/questions/3605673-i-got-a-letter-or-notice-from-the-irs

I AM BEING AUDITED

If you purchased Audit Defense:

https://ttlc.intuit.com/questions/2924451-i-bought-max-or-audit-defense-and-now-i-m-being-audited

AUDIT SUPPORT

https://support.turbotax.intuit.com/irs-notice/audit-support/

[xmasbaby0]

TurboTax does not receive any information from the IRS after you file your tax return, so we cannot explain what the error was.  One of the most common ones this year was claiming a recovery rebate credit for stimulus money already received.   The IRS will send a detailed letter of explanation in several weeks to tell you what they changed.