Income tax By the 1860s, the progressive tax had become a grudgingly accepted element of the English fiscal system. The US federal government imposed the first personal income tax on August 5, 1861, to help pay for its war effort in the American Civil War - (3% of all incomes over US$800) (equivalent to $ in ). This tax was repealed and replaced by another income tax in 1862. It was only in 1894 that the first peacetime income tax was passed through the Wilson-Gorman tariff. The rate was 2% on income over $4000 (equivalent to $ in ), which meant fewer
Negative income tax for the taxes drawn at the source is flat) which is positive once the income exceeds the tax exemption. If, however, the income is less than the tax exemption, the effective progressive rate actually becomes negative without any involvement by any tax authority. As for the positive progression, only very high incomes would lead to an actual tax rate which is close to the nominal flat tax rate. The tax on tax exemption also can be understood as a tax credit, which is paid back once an income has reached the level of the tax exemption. This level marks the