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Public Economics Lectures Part 1: Introduction

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Taxable Income Formula<br />

Simplicity of identification in Feldstein’s formula has led to a large<br />

literature estimating elasticity of taxable income<br />

But since primitives are not estimated, assumptions of model used to<br />

derive formula are never tested<br />

Chetty (2009) questions validity of assumption that g ′ (e) = t<br />

Costs of some avoidance/evasion behaviors are transfers to other<br />

agents in the economy, not real resource costs<br />

Ex: cost of evasion is potential fine imposed by government<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 3: Effi ciency 65 / 105

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