Public Finance and Public Policy

Citation

Gruber, J. (2026). Public Finance and Public Policy (8th ed.). Macmillan Learning.

Chapter Summary

The eighth edition has 25 chapters in four parts. The publisher describes the book as combining rigorous theory, current empirical evidence and policy-oriented applications, and two kinds of boxed feature run through the chapters: Applications and Empirical Evidence boxes.

Part I, Chapters 1–4: Why Study Public Finance?; Theoretical Tools of Public Finance; Empirical Tools of Public Finance; Budget Analysis and Deficit Financing

The opening part sets out why governments intervene and gives the reader the two toolkits the rest of the book uses: a theoretical one (Chapter 2) and an empirical one (Chapter 3). Chapter 1 has been rewritten for this edition to cover the policy changes from the end of the Biden administration to the start of the second Trump administration, and it keeps an Application on vaccination. Chapter 3 has a new discussion of bias and the need for randomized controlled trials, built around workplace wellness programmes. Chapter 4 turns to the government budget, deficits and the difficulty of controlling spending while keeping the deficit in check.

Part II, Chapters 5–8: Externalities: Problems and Solutions; Externalities in Action: Environmental and Health Externalities; Public Goods; Cost-Benefit Analysis

The core market-failure chapters. Chapter 5 sets out the problem of externalities and the policy responses to it; Chapter 6 applies the analysis to environmental and health externalities, with updated material on environmental regulation and climate change. Chapters 7 and 8 cover public goods and the cost-benefit analysis used to decide whether a public project is worth undertaking.

Part II, Chapters 9–11: Political Economy; State and Local Government Expenditures; Education

The rest of Part II asks how governments actually make spending decisions. Chapter 9 treats political economy; the publisher notes new material on political polarization in the United States. Chapter 10 moves to state and local government spending, and Chapter 11 is devoted to education.

Part III, Chapters 12–14: Social Insurance: The New Function of Government; Social Security; Unemployment Insurance, Disability Insurance, and Workers' Compensation

Part III opens with a general chapter on why governments provide insurance, then applies it to the largest programmes: Social Security in Chapter 13, and unemployment insurance, disability insurance and workers' compensation in Chapter 14.

Part III, Chapters 15–17: Health Insurance I: Health Economics and Private Health Insurance; Health Insurance II: Medicare, Medicaid, and Health Care Reform; Income Inequality and Government Transfer Programs

Two chapters on health, the author's research field: Chapter 15 covers health economics, private insurance and the cost and quality of US health care; Chapter 16 covers Medicare, Medicaid and the Affordable Care Act. Chapter 17 deals with income inequality and transfer programmes, including in-kind benefits.

Part IV, Chapters 18–20: Taxation: How It Works and What It Means; The Equity Implications of Taxation: Tax Incidence; Tax Inefficiencies and Their Implications for Optimal Taxation

The theory of taxation in three steps: how tax systems work (Chapter 18), who really bears a tax (Chapter 19), and the efficiency costs of taxes and what they imply for optimal tax design (Chapter 20).

Part IV, Chapters 21–25: Taxes on Labor Supply; Taxes on Savings; Taxes on Risk Taking and Wealth; Taxation of Business Income; Fundamental Tax Reform and Consumption Taxation

The remaining chapters apply the theory to particular tax bases: labour supply (with recent tax proposals), saving, risk taking and wealth (including efforts to close loopholes and to tax wealth), and business income, with new developments in corporate taxation. Chapter 25 closes the book with fundamental tax reform and consumption taxation.

Key Concepts

Part I: Introduction and Background

• Theoretical and empirical tools: the book gives separate chapters to the theory and to the empirical methods it uses later.
• Randomized controlled trials and bias: why simple comparisons can mislead, and why randomized evidence is valued when judging policy.
• Deficit financing: how governments fund spending in excess of revenue, and the budget issues it creates.

Part II: Externalities and Public Goods

• Externalities: costs or benefits that fall on people outside a transaction, and the private and public remedies for them.
• Public goods: goods whose provision raises the question of whether the government should supply them.
• Cost-benefit analysis: the method used to weigh the costs and benefits of public projects.
• Political economy: how political processes shape what governments actually choose to do.

Part III: Social Insurance and Redistribution

• Social insurance: government provision of insurance against risks such as old age, unemployment, disability and ill health.
• Transfer programmes: cash and in-kind programmes aimed at income inequality.

Part IV: Taxation in Theory and Practice

• Tax incidence: the distinction between who formally pays a tax and who bears its burden.
• Optimal taxation: designing taxes in light of the inefficiencies they create.
• Consumption taxation: taxing spending rather than income, as a route to fundamental tax reform.

Critical Analysis

Strengths

• Theory paired with evidence. The book gives its empirical methods a chapter of their own and carries Empirical Evidence boxes throughout, so students see how claims about policy effects are tested, not only how models predict them. The new treatment of bias and randomized trials in Chapter 3 strengthens this side.
• Broad and policy-led coverage. The 25 chapters run from market failure through social insurance and health care to taxation of each major tax base. Social insurance, health insurance and transfers take up all six chapters of Part III.
• An author with policy experience. The publisher's biography notes Gruber's time as a Deputy Assistant Secretary at the US Treasury, his role in Massachusetts health reform and his work on the Affordable Care Act. The health and tax chapters draw on fields where he has worked directly.
• Current data. For the eighth edition the publisher states that all statistics, tables, figures and applications were updated, with substantial revisions to the chapters on politics, health care, inequality, labour supply and corporate taxation.

Limitations

• Centred on the United States. The programmes analysed in Part III are American (Social Security, Medicare, Medicaid, the Affordable Care Act), and Chapter 1 is framed around recent US administrations. Readers elsewhere will need to map the analysis onto their own country's institutions.
• Long. Twenty-five chapters are more than one semester can cover, so a course has to select.
• Dates quickly. Much of the material is tied to current policy and data; the publisher's long list of updates shows how much changes between editions. Older editions remain useful for theory but not for facts.
• Limited support for independent study. The solutions manual and test bank are listed as instructor resources, so students working alone have no official worked answers.

Where It Fits in the Course

In this course on public and labour economics, Gruber is the main text for the public-finance half. Stephen Smith's Taxation: A Very Short Introduction is a short, non-technical overview of why governments tax and who bears taxes, with examples from many countries; it makes a quick first reading before Part IV, and its international range offsets Gruber's US focus. Thomas Piketty's The Economics of Inequality is a short primer on measuring inequality and on redistribution through taxes and transfers, a useful companion to Chapters 17 and 19.

Ehrenberg, Smith and Hallock's Modern Labor Economics is the undergraduate labour-economics counterpart and overlaps with Gruber on taxation and labour supply, social insurance and transfer programmes; reading Chapter 21 alongside its treatment of labour supply shows the same question from both fields. Cahuc, Carcillo and Zylberberg's Labor Economics is a graduate textbook with formal models and econometric surveys, a later step for students who want more technical depth. Levine and Rubinstein's Smart and Illicit is a single empirical research paper and works best as an example of the kind of evidence discussed in Chapter 3.

How to Use This Book

The book suits economics undergraduates who have taken a principles course; intermediate microeconomics makes Chapters 2 and 20 easier, although the toolkit chapters are there to bring readers up to speed. Students of public policy can use it as a guide to how economists evaluate government programmes.

A practical plan for one semester:

• Core: Chapters 1–3 (motivation and tools), 5–8 (externalities, public goods, cost-benefit analysis), 12 (the logic of social insurance) and 18–20 (how taxes work, incidence, efficiency and optimal taxation). This gives the analytical backbone of the field.
• Choose by interest: one or two programme chapters from Part III (Social Security, health, or unemployment and disability insurance) and one or two tax-base chapters from 21–25. Chapter 21 pairs naturally with a labour-economics course.
• Optional: Chapters 4, 9, 10 and 11 (budgets, political economy, state and local spending, education) for courses with a stronger policy or political emphasis.

Read the Empirical Evidence boxes rather than skipping them: they show how the claims in the text are established, and returning to Chapter 3 when a box uses an unfamiliar method helps. Readers outside the United States should, for each Part III chapter, look up the equivalent programme in their own country and ask which parts of the analysis carry over.