Will turbo tax take responsibility if they made a mistake on my return?

[s-maresco]

The 10% penalty was not deducted from retirement account income and now I owe

[tagteam]

That depends. Please refer to the Accuracy Guarantee at the link below.

What is the TurboTax 100% Accurate Calculation Guarantee? (intuit.com)

[xmasbaby0]

Do you mean you had an early withdrawal from a retirement account-----you took out money before you were 59 1/2?   Did you enter the correct date of birth on your tax return?   Please explain.   

TurboTax guarantees that the calculations will be correct, but you are always responsible for any tax owed.   If TT's calculations resulted in penalties you can enter an accuracy guarantee claim.

TurboTax provides do-it-yourself tax software.  TurboTax guarantees the calculations done by its software.   The information entered into that software is data entered by you, the user.   TurboTax cannot and does not check that information against any outside sources, so TT cannot know if you entered your information completely or correctly.   It is up to you to enter all of your information correctly and completely, and to check your tax return before you file it.  If you forget to enter some income, or enter it incorrectly, enter it in the wrong place, etc. then you may end up owing additional tax to the IRS and/or state.  TurboTax does not pay the additional tax you owe.

  If TurboTax’s calculations were incorrect, and you owe penalties and/or interest, then TT will pay the penalties and interest.  The tax due is always owed by you, and must be paid by you.

If you need to enter a claim for the accuracy guarantee:

https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/submit-claim-turb...

[DoninGA]

If you were under the age of 59 1/2 and made a withdrawal from a tax deferred retirement account, then there would have been a 10% early distribution penalty, entered as a tax liability, included on your federal tax return, Form 1040.

Look at your tax return Schedule 2 Line 8 for the penalty.  This amount flows to the Form 1040 Line 23.