Before 1914, taxes mainly applied to the wealth (wealth, land, inheritance) or incomes from wealth. The tax burden did not exceed 10%. Many propositions, successively from Doumer, Cavaignac and Waldeck-Rousseau, failed, due to the opposition of the right. It was the Great War which gave the opportunity to create a tax on income, in 1917, thanks to Joseph Caillaux, the minister of Finances. At the same time, the four contributions created in 1790 and 1791 were turned into local taxes, and replaced by the income tax as the main national tax.