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Public Economics Lectures Part 1: Introduction

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PGs with Distortionary Taxes: 1st Best<br />

When lump sum tax instrument is available, govt maximizes<br />

W = wl(1 − τ) − R − l k+1 /(k + 1) + v(G )<br />

= wl(1 − τ) − R − l k+1 /(k + 1) + v(wlτ + R)<br />

where l = [w(1 − τ)] e is chosen optimally by the individual<br />

FOC in R implies that v′(G ) = 1 (Samuelson rule)<br />

<strong>Public</strong> good provided up to the point where sum of MRS v ′ (G )/1<br />

equal MRT 1<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 7: <strong>Public</strong> Goods and Externalities 65 / 138

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