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Autor:innen: 
Erscheinungsjahr: 
2020
Schriftenreihe/Nr.: 
CESifo Working Paper No. 8630
Verlag: 
Center for Economic Studies and Ifo Institute (CESifo), Munich
Zusammenfassung: 
This paper studies optimal non-linear income taxation in a model with labor supply responses at the intensive (hours, effort) and extensive (participation) margins. It shows that an Earned Income Tax Credit (EITC) with negative marginal taxes and negative participation taxes at the bottom is optimal if, first, semi-elasticities of participation are decreasing along the income distribution and, second, social concerns for redistribution from the poor to the very poor are sufficiently weak. This result is driven by a previously neglected trade-off between distortions at the intensive margin and distortions at the extensive margin, i.e., between two aspects of efficiency. Numerical simulations suggest that a strong expansion of the EITC for childless singles in the US could be welfare-increasing.
Schlagwörter: 
optimal income taxation
extensive margin
intensive margin
earned income tax credit
JEL: 
H21
H23
D82
Dokumentart: 
Working Paper
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