Does my refund amnt shown include what I owe? ( I owe est $4000 to IRS , If my refund says Im getting $2000 back, has my IRS debt already been subtracted?)

[DoninGA]

No, your debt has Not been subtracted from your tax refund.  There is no where on your tax return that you enter tax debts and TurboTax would have no knowledge of your debts.
The IRS will probably seize the refund to apply to your back tax debts.

[xmasbaby0 · Accepted solution]

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.