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Public Economics Lectures Part 1: Introduction

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Sandmo 1975: Additivity Result<br />

Useful analytic representation but not an explicit formula for the<br />

optimal tax rate<br />

Ramsey tax will affect level of cons, which affects optimal Pigouvian tax<br />

Conversely, Pigouvian tax will affect optimal Ramsey tax rate<br />

Qualitative lesson: no justification to tax goods that are<br />

complementary to those that produce negative externalities.<br />

Just tax fuel, not cars<br />

Optimal policy is always to directly tax source of the externality<br />

Cornaglia and Adda (2003) example of tax on number of cigarettes vs.<br />

cotinine levels<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 7: <strong>Public</strong> Goods and Externalities 112 / 138

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