合报, WHY要报HEAD OF HOUSEHOLD?

再说你们也不一定符合, 要异地分开6个月以上及其他条件.
"Generally, to qualify for head of household status, you must be unmarried and not entitled to file as a qualifying widow or widower with a dependent child. You must also have provided more than half the cost of maintaining as your home a household that was the main home for a qualifying person. You may also qualify for head of household status if you, though married, file a separate return, your spouse has not lived in your home during the last six months of the tax year, and you provided more than half the cost of maintaining as your home a household that was the main home for a qualifying child for more than one half of your tax year."