You are not currently logged in.

Access JSTOR through your library or other institution:


Log in through your institution.

Journal Article

Optimal Income Taxation and Risk: The Extensive-Margin Case

Robin Boadway and Motohiro Sato
Annals of Economics and Statistics
No. 113/114, SPECIAL ISSUE ON THE ECONOMICS OF TAXATION (June 2014), pp. 159-183
Published by: GENES on behalf of ADRES
DOI: 10.15609/annaeconstat2009.113-114.159
Stable URL:
Page Count: 25
Were these topics helpful?
See somethings inaccurate? Let us know!

Select the topics that are inaccurate.

  • More info
  • Add to My Lists
  • Cite this Item
Optimal Income Taxation and Risk: The Extensive-Margin Case
Preview not available


The optimal income tax structure is studied in a setting in which workers make discrete labor market decisions and earnings are uncertain. Workers differ continuously along a single dimension that reflects their skills as well as their disutility of work in different jobs. A discrete number of job-types are available in perfectly elastic supply. Each job yields a stochastic distribution of wages, where the distribution differs among skill-types. The amount of work in each job is fixed, so there is no intensive labor-supply decision and wages reflect earnings. Expected wages for a given job-type are higher for higher-skilled workers. Workers first choose a job based on the distribution of wages they expect to earn. Once jobs are chosen, wages are revealed and workers decide whether to accept the job or become voluntarily unemployed. Each job-type is associated with a distribution of wages, and the same wage will be paid by more than one job-type. Under reasonable conditions, workers segment themselves by skill levels into jobs. We analyze the optimal income tax structure given these two margins of decision-making, job choice and participation. The optimal tax will reflect insurance (since earnings are uncertain when jobs are chosen), redistribution (since persons of higher skills earn more), and efficiency (since taxes affect both job choice and participation). JEL: H21, H24. / KEY WORDS: Optimal Income Taxation, Risk, Extensive Margin.

Page Thumbnails