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Public Economics Lectures Part 1: Introduction

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Chetty Transfer Cost Model: Setup<br />

Individual chooses e (evasion/shifting) and l (labor supply) to<br />

max u(c, l, e)<br />

e,l<br />

= c − ψ(l)<br />

s.t. c = y + (1 − t)(wl − e) + e − z(e)<br />

Social welfare is now:<br />

W (t) = {y + (1 − t)(wl − e) + e<br />

−z(e) − ψ(l)}<br />

+z(e) + t(wl − e)<br />

Difference: z(e) now appears twice in SWF, with opposite signs<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 3: Effi ciency 66 / 105

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