回複：算玩了稅發現還要倒貼錢（H1B），是這樣嗎？

SSA and Medical Tax is different from your tax withwolding. They are not a real tax, and more lose to insurance. Normally, if your salary don't been hold enought tax in adcvance, you are going to own tax. It's OK and normal. The key is your tax withholding should be 90% of your total tax(Line 42-1040) for the same year.If you owned too much tax, you'd better file a new W-4 to increase your tax withholding to your acccounting department, otherwise file a new W-4 to decrease your tax withholding.