Middle class tax burden varies widely across Europe

Luxembourg's middle class has the highest disposable income in Europe, while Bulgaria's has the lowest. Luxembourg's is over 2.5 times larger than Bulgaria's.

Belgium has a progressive tax system where lower middle class families actually have a negative tax burden (receive more benefits than they pay in taxes), while upper middle class pays over 33% in taxes.

Denmark has the highest tax burden across multiple middle class segments - over 37% for upper middle class dual income families with 2 kids.

On average, single middle class households pay 26-35% in taxes across Europe, more than families with children who pay 6-29%.

The OECD recommends reviewing tax and benefit systems to address lower middle class feeling the system is unfair and costs rising faster than incomes.