Brendan Burgess
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Most studies measure income inequality at a point in time. But a lot of inequality is between periods in one's life. For example, as a student or young worker you would be in the lower deciles of the earnings distribution but when you are more advanced in work, you are up towards the top, and will probably fall again as you get older.
Barra Roantree gave a very interesting paper at the Dublin Economics Workshop and shows that inequality is a lot less when measured from a lifetime perspective
[broken link removed]
"From a lifetime perspective…
Inequality is lower and the tax & benefit system does less to reduce it This is because quite a lot of inequality is transitory or age-related
• People experience temporary periods of unemployment or low pay
• Given strong age-profile of earnings, snapshot inequality measures heavily influenced by people being at different stages of life
… and much of what the system does is intrapersonal redistribution
• That is, between periods of life rather than across individuals
• Many net tax payers today, but net benefit recipients tomorrow
• We estimate around 60% of total redistribution is intrapersonal (relative
to either a lump-sum or proportional baseline)
• Nothing to do with ‘contributory’ benefits, which are very limited"
The standard measure of inequality is the Gini coefficient. In simple terms, if one person earned all the income and no one else earned anything, the coefficient would be 1. If everyone had the same income, the coefficient would be zero.
This is the key slide
In the UK, the Gini coefficient before tax and social welfare drops from around 0.49 to 0.28.
Brendan
Barra Roantree gave a very interesting paper at the Dublin Economics Workshop and shows that inequality is a lot less when measured from a lifetime perspective
[broken link removed]
"From a lifetime perspective…
Inequality is lower and the tax & benefit system does less to reduce it This is because quite a lot of inequality is transitory or age-related
• People experience temporary periods of unemployment or low pay
• Given strong age-profile of earnings, snapshot inequality measures heavily influenced by people being at different stages of life
… and much of what the system does is intrapersonal redistribution
• That is, between periods of life rather than across individuals
• Many net tax payers today, but net benefit recipients tomorrow
• We estimate around 60% of total redistribution is intrapersonal (relative
to either a lump-sum or proportional baseline)
• Nothing to do with ‘contributory’ benefits, which are very limited"
The standard measure of inequality is the Gini coefficient. In simple terms, if one person earned all the income and no one else earned anything, the coefficient would be 1. If everyone had the same income, the coefficient would be zero.
This is the key slide
In the UK, the Gini coefficient before tax and social welfare drops from around 0.49 to 0.28.
Brendan