Efficient redistribution of lifetime income through welfare accounts

Compared with a conventional tax–transfer system, individual welfare accounts can redistribute lifetime incomes at a lower efficiency cost. These welfare accounts employ mandatory contributions rather than taxes to finance social transfers to people of working age. We describe a design for welfare accounts that guarantees a Pareto improvement if behavioural responses to the accounts improve the public budget. We also develop a formula for quantifying the impact of welfare accounts on the government budget and economic efficiency. Applying the formula to Danish data, we find that the proposed welfare accounts would generate a Pareto improvement, thus improving the trade-off between equity and efficiency. We discuss how the gains from welfare accounts can be distributed in an equitable manner.