After you file

KrisD · ‎June 3, 2019

You can enter the negative number as an "Other Income" entry.

Enter (or leave the entry for) the W-2

Click on Federal,,,Wages & Income,,,,scroll down to the last section "Less Common Income"

Scroll down to the last choice "Miscellaneous Income, 1099-A 1099-C" and Start

Scroll down to the last choice "Other reportable income" and Start

For the Description enter "TAX TREATY"

Enter the amount of the income that you are attributing to the treaty AS A NEGATIVE NUMBER

Print the 1040X

Mail with form 8833. TurboTax does not supply Form 8833, you will need to print one and attach it to your 1040X.