Thanks a lot for the reply.
To get it clear, the answer is I do need to consider the tax rate, but the tax software may handle this with some information I input?
I'm using Sprintax for 1040NR for Jan to Sep, and Turbotax for 1040 for Oct to Dec. Do you happen to know how I should fill in the information for both? Do I split the income into two parts? or fill all the income and there may be an option to choose the percentage of the income belongs to 1040NR or 1040?
