Get your taxes done using TurboTax

Thank you for replying. using turbotax MFJ option after completing required information i am seeing that i will get a refund. 

It appears i can not file for extension using TurboTax if MFJ option is selected as i can not proceed without providing wife's social security number. Is there a way around this or i am left with only option of filing extension in mail?

and is there a way to calculate "Estimated 2021 federal total tax liability (form 1040, line 24)"?