@Tang_2022 , assuming that you are US person ( citizen/ GreenCard / Resident for Tax purposes ) and that your spouse is NOT ( no tax id, does not reside in the USA, has no US sourced/connected income etc. ), you are kind of caught between a rock and a hard place:
(a) filing as Single in lieu of Married Filing Separate on a form 1040, implies you are mis-representing at best, lying at worst
(b) filing as Married Filing Separate , while not changing your tax situation and being truthful, implies having to file by mail ( which IRS prefers you not do, because it delays processing, costs much more for the human intervention)
Note that the IRS asks for information of the spouse ONLY because this way they can make sure that each spouse uses the same type of deduction ( standard or itemized), which does not apply in case of NRA / non-us person.
The only viable option in a such a case is to prepare your return with TurboTax, using MFS filing status , using a dummy SSN -- like your own SSN but replacing the last four digits with 9999 or similar ,just to keep the software happy ----, then printing out the return, replacing the dummy SSN with " N R A ", sign , date and file by mail. This meets all the legal requirements but encumbers both the IRS ( processing ) and you ( delay in refunds and cost to mail ).
If this is your first year ( and you working here on work visa ), I would suggest to be compliant by filing an amended return ( changing your marital status, the details about your spouse ( NRA, name , address etc. ) , and mailing this in. Note however that IRS suggests not to file an amended return if there is no change in your Adjusted Gross Income or tax liability.
So you are really doing for no purpose other than to meet the IRS rules an regs --- no substantive effect on your taxes.
IMHO
Is there more I can do for you ?
pk
