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Public Economics Lectures Part 1: Introduction

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Poterba 1992<br />

Estimates effi ciency cost of subsidy for housing in the U.S. from<br />

mortgage interest deduction<br />

First need to define “cost” of owning $1 of housing<br />

Definition: “user cost” — measures opportunity cost of living in home<br />

Could rent the house to someone else at percentage rate<br />

r =<br />

Rent<br />

Property Value<br />

With marginal income tax rate τ and nominal interest i, net user cost<br />

taking into account mortgage deduction is<br />

c = r − τ × i<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 3: Effi ciency 73 / 105

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