I am applying for SSN for my wife, which can take several months to approve. So I plan to file an extension before 4/15 so I can file tax by 10/15 after I get my wife's SSN. But I have some tax obligations to pay. I would like to pay tax now to avoid interest and penalty. California and Indiana official tax website both asks for spouse SSN in order to accept my tax payment when I indicated the tax payment is for joint return. How do I resolve this situation?
Thx
