The need when how much salary achieves pays wage income tax? How should be wage income tax calculated? After numerate of wage income tax, how should be handled?

• 以前是800元，现在是1600元，如超过1600元，每100元要扣除5%25的所得税，比如是1700元，扣除个税后，你应得工资1695元。河北的是这样。