@RobertB4444
Thank you for your comments.
I understand I need report all of vested RSU into U.S. 2023 tax return.
However, Form 1116 may not deductible all of foreign taxes, it need separate amount in between foreign source and U.S. source.
The W2 report all of vested RSU, Turbotax will treament it as U.S. income by default, so no tax credit available from Form 1116.
My RSU grant at 2021 and vest in future 4 years, the RSU grant at 06/20/2021 Taiwan, relocate to same company US office at 01/01/2023, previous vest at 06/20/2022 is no problem since I am not live in the U.S., but the recently vested RSU at 06/20/2023, I am U.S. RA in 2023.
My question is, how to determination amount in between U.S. sources and foreign sources in 2023 tax return.
