This Section comments on - and -. These summary tables show results for eight family-types, characterised by different family status (single/married, 0-2 children), economic status (one-/two-earner household) and wage level (33 per cent, 67 per cent, 100 per cent and 167 per cent of annual gross wage earnings of an average worker).

The graphs in this section show the estimated tax burden on labour income in 2011 for gross wage earnings between 50 per cent and 250 per cent of the average wage (AW). For each OECD member country, there are separate graphs for four family types: single taxpayers without children, single parents with two children, one-earner married couples without children and one-earner married couples with two children. The net personal average and marginal tax rates ([the change in] personal income taxes and employee social security contributions net of cash benefits as a percentage of [the change in] gross wage earnings) are included in the graphs that show respectively the average and the marginal tax wedge.The marginal tax wedges in the graphs are calculated in a slightly different manner than the marginal tax rates that are included in the rest of the Taxing Wages publication. In Taxing Wages, marginal rates are usually calculated by increasing gross earnings by one currency unit (except for the spouse in the one-earner married couple whose earnings increase by 1/3 of the average wage). However, the +1 currency unit approach requires the calculation of marginal rates for every single currency unit within the income range included in the graphs. It otherwise would not be correct to draw a line through the different data points because the data for the income levels in between the different points would be missing. In order to reduce the required number of calculations, the marginal rates that are shown in the graphs are calculated by increasing gross earnings by 1 percentage point – each line in the graph therefore consists of 200 data points – instead of 1 currency unit.

This Section briefly reviews the definitive results for 2010 reported in - and what they show about changes between 2010 and 2011. The comparable 2011 data is shown in - and the formats of the two sets of tables- are identical meaning that the changes for each family-type between the two years can be traced by comparing the corresponding columns in the two sets of Tables.

This Section presents detailed results of the evolution of the tax burden between 2000 and 2011. It provides information for each of the OECD countries on the income taxes paid by workers, their social security contributions, the family benefits they receive in the form of cash transfers as well as the social security contributions and payroll taxes paid by their employers over this period.