No. If you already owe back taxes to the IRS, TurboTax does not know that and did not include that in the calculations for your 2018 tax return. If you owe tax to the IRS, they will offset your 2018 refund for the amount that you owe.
To see back taxes owed
https://www.irs.gov/uac/view-your-tax-account
NOTE: You can contact the IRS Treasury Offset Program Call Center at 1-800-304-3107 to ask if they have an offset for you on file. TurboTax would not have that information.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
