The following tax rates apply to married couples with two children.
Source from BBC 25,February ,2014
Denmark - 34.8%
Austria - 31.9%
Belgium- 31.8%
Finland -29.4%
Netherlands - 28.7%
Greece 26.7%
UK - 24.9%
Germany - 21.3%
OECD average - 19.6%
USA - 10.4%
Korea - 10.2%
Slovak Republic - 10%
Mexico - 9.5%
Chile - 7%
Czech Republic - 5.6%
In Germany the rate drops from 39.9% to 21.3% because of generous child tax credits. Across the OECD, tax rates drop by an average of 5.5% for married couples with children. Greece is the only country where you pay more tax if you are married with children.