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Public Economics Lectures Part 1: Introduction

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Implementable Excess Burden Formula<br />

Consider increase in tax τ on good 1 to τ + ∆τ<br />

No other taxes in the system<br />

Recall the expression for EB:<br />

EB(τ) = [e(p + τ, U) − e(p, U)] − τh 1 (p + τ, U)<br />

Second-order Taylor expansion:<br />

MEB = EB(τ + ∆τ) − EB(τ)<br />

≃<br />

dEB<br />

dτ (∆τ) + 1 d 2 EB<br />

2 (∆τ)2 dτ 2<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 3: Effi ciency 43 / 105

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