Public Economics Overview

Principles

Definition

Public economics is a branch of economics that analyzes the economic activities and policies of the state. It investigates public finance, encompassing government revenue (taxation) and expenditure, and evaluates their effects on economic efficiency, equity, and societal welfare.

Ontological type

Core Subfields

Theoretical Foundations

Key Policy Instruments

Key developments

Key Figures

Public Choice Fiscal Federalism era

George J. Stigler [1] was a leading figure in public economics during this era, affiliated with the University of Chicago [3] and Colorado State University [4]. His key contribution was The Theory of Economic Regulation [7], which advanced the public-choice view of regulatory capture and the incentives behind governmental intervention, shaping analyses of interjurisdictional taxation and local provision. Joseph E. Stiglitz [2] taught at the Massachusetts Institute of Technology [5] and Stanford University [6], among other venues, during this period. His contributions include the 1971 paper Differential Taxation, Public Goods, and Economic Efficiency [9] and the 1982 Lectures in Public Economics [8], which together pushed formal analysis of tax design, public goods, and efficiency in multi-tier governance and provided a framework for evaluating local public finance in the public-choice era.

Public Capital and Growth era

Roberto Perotti [1] is a prominent economist active across Harvard University [3] and Columbia University [4] in this era. His key contribution in this era is the empirical characterization of the dynamic effects of changes in government spending and taxes on output, as presented in the 2002 paper An Empirical Characterization of the Dynamic Effects of Changes in Government Spending and Taxes on Output [6], which highlights why fiscal shocks matter for short-run fluctuations and long-run growth. Olivier Blanchard [2] is a distinguished economist linked with American Finance Association [5] and Harvard University [3] during this era. His contribution centers on the same 2002 paper [6], providing empirical insights into government spending and tax dynamics that informed debates on deficits, optimal tax-base design, and growth-friendly public investment in this era.

Institutional Governance of Fiscal Policy era

Sérgio Rebelo [1] is a prominent macroeconomist anchored at Stanford University [3] and Northwestern University [4] in the era of institutional governance of fiscal policy. His key contribution lies in documenting when the government spending multiplier is large, as shown in When Is the Government Spending Multiplier Large? [5], which clarified how regime credibility, fiscal rules, and institutional context shape policy effectiveness in this era. Martin Eichenbaum [2] is a leading macroeconomist associated with Stanford University [3] and Northwestern University [4] during this era. His work on the same paper When Is the Government Spending Multiplier Large? [5] deepens the view that multiplier size depends on institutional design and governance quality, underscoring the role of institutions in credible, welfare-enhancing fiscal policy.