France continues to be among the OECD countries. OECD countries have the highest tax rates compared to other nations. The French Income Taxe rates account for 45% of GDP against 37% on average in OECD countries. The overall income tax rate of social security and tax on the average wage in 2005 was 71.3% of gross salary, the highest of the OECD. Use this France Income Tax calculator online to calculate the French income tax rates as per the country's norms.