I received a notification from the IRS that I owe more money than what was calculated via TurboTax. Should TurboTax pay for this? Have you had this happen to you?

[xmasbaby0]

TurboTax will not pay your extra tax.  TurboTax guarantees that its calculations are accurate based on the data that you enter.  The TurboTax guarantee will pay interest or penalties if TT's calculations are not accurate.  TT never pays your extra tax.

https://turbotax.intuit.com/corp/guarantees/

TT has no way to know if you leave out income, enter the wrong amount, etc. etc.  You do not say what the IRS changed on your tax return

TurboTax does not receive any information from the IRS or your state after your return was filed, so no one at TurboTax knows about a letter you received from the IRS or the state.

(what the letters from the IRS mean)

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

TurboTax has a special phone number for help with IRS/state tax letters, which will be easier than going through regular Customer Support.   At the page below, click on the blue button that says "Get Help from TurboTax Support".  Then it will ask you what tax year is your letter.  Then it will ask you what the letter concerns. Then it will show you the phone number during posted business hours.

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

[DoninGA]

Taxes owed can only be paid by the taxpayer, not by TurboTax.

If there was a calculation error in the TurboTax software then TurboTax would pay any penalties and interest assessed.

See this TurboTax support FAQ for the Accuracy Guarantee - https://ttlc.intuit.com/community/charges-and-fees/help/what-is-the-turbotax-100-accurate-calculatio...

However, in most all cases it is either an incorrect entry by the user of the software or an omission of taxable income by the user that would cause the IRS to assess more taxes owed.

What exactly does the IRS letter you received state for why the IRS changed your tax return?  What is the IRS letter or notice number located in the upper right corner of the first page, usually preceded by either a CP or LTR?

[Critter-3]

Did the IRS bill you for an under payment or late payment penalty ?   

If so TT only calculates an estimated underpayment penalty based on the information you entered (unless you choose to override that function)  and the IRS/state will then bill you for any more they determine is needed based on the info they have and when you actually pay the balance due.  The program cannot estimate the late payment penalty ... the IRS/state always bill you for that themselves.