Regional, rural and urban development

OECD Income Distribution Database (IDD): Gini, poverty, income, Methods and Concepts


To benchmark and monitor income inequality and poverty across countries, the OECD relies on a dedicated statistical database: the OECD Income Distribution Database. Due to the increasing importance of income inequality and poverty issues in policy discussion, the database is now annually updated.


See latest OECD Inequality and Poverty key data:

Key indicators:

  • Trends in Gini coefficient of income inequality (from 0 when everybody has identical incomes to 1 when all the income goes to only one person)
  • S90/S10 income share ratio (gap between 10% richest and poorest average income)
  • Relative poverty rate (% of persons living with less than 50% of equivalised disposable income)

IDD Database in OECD.Stat (Look out for forthcoming update on 15 June)

Trends and levels in Gini coefficients before and after taxes and transfers, average and median household disposable incomes, relative poverty rates and poverty gaps, before and after taxes and transfers, etc.

Compare your country: Income distribution and poverty



METHODs and concepts 


Quality review of the OECD IDD and earnings databases (Dec. 2012)

This quality review is in three main parts:
-Part I reports the results of a first self-assessment of different quality dimensions of the OECD Database on Household Income Distribution and Poverty (.pdf)
-Part II assesses the cross-country comparability of the OECD Earnings Distribution Database (.pdf)
-Part III provides detailed country data reviews on income distribution data, for the 34 OECD member countries. These country reviews compare the OECD benchmark series for income distribution and poverty reporting with alternative estimates which are available on a national or international basis -  each country separately (.pdf) including revised versions:


How much do you earn compared with others in your country? Do you feel rich, poor, or just average? Use this tool and found out how your income really compares.


Related Documents


Income Inequality and Poverty

OECD Income Distribution Database (IDD): Gini, poverty, income, Methods and Concepts