老兄，你這個人思路很懶散。你有正常婚姻，head of household是給單親父母的，你為什麽要去用Head of Household？僅僅是因為你老婆沒有ITIN，那麽就去申請啊！因為你不去申請你就糊裏糊塗用head of household，就是花精力把自己的財政混亂，IRS萬一發現了也不認這個情，認為你錯誤了還要改正。
你思想方法就是懶人的，走正路稍微有點阻力你就像去抄近路走歪路，這輩子路還長，你這麽下去怎麽辦？
如果ITIN來不及拿不到，等到四月份去申請一個extension of time，你就有六個月的時間準備。https://www.irs.gov/forms-pubs/extension-of-time-to-file-your-tax-return
但是，extention of time to file doesn't mean extension of time to pay your tax。如果你算好有錢要付，你還是要4/15前把錢交好。
你應該做的是：（1）apply for ITIN for everyone (2) fill out your tax return without ITIN, see if you owe tax or get refund (3) if you owe tax, pay it before 4/15 (4) file extension of time before 4/15 (5) file your tax return with ITIN before 10/15.
