exceptions, net income is determined from total income, whatever its origin, after applying certain deductions, and then a single scale of taxation is applied. This scale is characterized by rates applied to slices of income according to the principle of progressivity. However, there are numerous provisions, so there are many systems of taxation depending on the type of income received. In addition, some income and capital gains are subject to a fixed rate of tax. The IR is payable each year on the total taxable income of the household. In 2021, proceeds from the IR amounted to €280;bn. The income subject to IR is divided into seven categories: industrial and commercial profits, non-commercial and agricultural profits, land income, salaries and wages, pensions and annuities, movable income, and capital gains. Individuals' total income is taxed if they are resident in France, whether they have French nationality or not. Individuals not living in France are taxed only on their income from French sources. The tax is calculated for each "fiscal household", i.e. the family unit composed of either a single person, or two partners and their children or other dependents. Whatever the nationality, a person who is a tax resident in France is taxable on their worldwide income. People not living in France are subject to limited tax on their income from French sources only. The amount of taxable income, or "revenu fiscal de référence" (RFR), is not equal to the income received by the household in the year. Instead, the RFR is determined by dividing the income by the number of "parts" in the fiscal household (1 part for every adult, 0.5 parts for each of the first two child, and 1 part for each successive child), and then diminished further by a standard deduction and any other deductions the taxpayer may have claimed in the year. The table below shows the percentage of income tax applicable to taxable income, or RFR (rather than gross income). Exemptions are made for social reasons. Taxpayers whose net income does not exceed €7,920 are exempted from the IR. In principle, taxable income is calculated from the income available to a fiscal household in one year. Some expenses by the household tax are deductible from total income. There can be cuts and maximum taxable amounts of the income. The income tax is calculated by the administration based on the amounts reported by taxpayers who are