We have just completed the updates to the website and app for the tax changes for 16 countries within our world tax calculator.
It is a complicated process due to the varying means of accessing data and deciphering how rules work for the different countries available for comparison. In order to provide a basis where a like for like match is as close as possible, we use tax rules as applicable to single individuals paying personal income tax.
Common allowances, deductions and social charges as well as tax credits bearing effects upon the total tax charge are also included when coming up with a figure for total taxation.
There are big changes for taxes in Japan with the 2018 reform as well as incremental changes for other countries.
To help make figures make more sense in real terms we include the cost of a common basket of goods for each country.
Remember, you can enter a gross income amount in any currency (currencies are converted automatically with rates updated daily!)