1042-S

Yes, you do need to report both. For the W2, you would report this in the W2 section of your return. To report the 1042S, go to:

1. Log into your account
2. Select Wages and income
3. Less Common income
4. Miscellaneous Income, 1099-A, 1099>start
5. Scroll to the bottom of the page to Other Reportable Income
6. Other taxable income, answer yes
7. Then give a brief description of the income and the amount listed..
8.  Here, describe this as 1042 S income and the amount.

 If withholding tax was paid with the 1042-s, here is how to report.

1. Go to Federal 
2. Deductions and Credits
3. Estimates and Other Taxes Paid
4. Other Income Taxes 
5. Other income Taxes paid in 2023
6. Withholding not already entered on a W2 or 1099. 

thanks so much for your reply.

1. both federal tax withheld and state tax withheld on my 1042-S are 0. So I guess I do not need to report withholding tax?

2. Under the US-China article 19 treaty, a Chinese resident who goes to the US as a researcher for research will be exempt from tax for three years. My question is: since I came to US in September 2021, I am not sure if the treaty applies to me in the year 2024. Is anywhere on 1042-S indicates that I can apply treaty?

No, your three-year exemption period ended in 2023. You would need to file as a US resident in 2024.

So it has to be the calendar year? The amount on my W-2 is close to my salary, and 1042-S is even higher than W2. If I file both W2 and 1042-S, then the tax is likely doubled. Is that correct.

For some people, salary is W2 plus 1042S. But for me, W2 is already the salary. So I am very confused.

 To clarify, does the 1042S represent your full salary you earned this year?

@lizmgs