But often income ceilings apply at the moment of entry and social renters may meanwhile improve their income position over time without being obliged to move to other housing. On average, the share of overall social housing expenditures going to the bottom quintile is 37%, while that going to the top quintile is around 9%. However, the share going to the bottom quintile exceeds 50% in Belgium, the Slovak Republic and Ireland, and is only around 20% in Austria, the Czech Republic and Greece.