I have 'Single' selected in the current W-4. Is my understanding correct:
1. I can modify W-4 NOW and use it with 2023 tax return. But shouldn't W-4 modification take effect only for next 2024 return?
2. Then select 'Married File Jointly'. But SSN/ITIN for the spouse is still required. Or can I just leave a field blank?
Overall, is it really worth to do all these modifications and go this route now? Or file as a 'Single' for now, modify W-4, get ITIN and file as 'Married File Jointly' for the 2024 return? I would really like to avoid high due amounts because of this 'unexpected' change.
Also, can I go through this route with Turbotax? Should I upgrade a plan? Want to avoid any mistakes.
