Deregulation refers to the reduction or elimination of government-imposed rules governing the conduct of industries, markets, or economic actors. In operational terms, it encompasses legislative repeal, administrative rollback, and non-enforcement of existing regulations. The term is sometimes contested at the definitional margin - critics argue that many deregulatory actions substitute one regulatory regime for another rather than removing oversight entirely, a dispute treated more fully at deregulation-debate-deregulation-vs-reregulation-debate.
Deregulation has been a recurring feature of U.S. economic policy since the late 1970s, spanning industries including airlines, trucking, telecommunications, banking, energy, and environmental compliance. Major legislative episodes include the Airline Deregulation Act of 1978, the Depository Institutions Deregulation and Monetary Control Act of 1980, the Telecommunications Act of 1996, and the partial repeal of the Glass-Steagall Act via the Gramm-Leach-Bliley Act of 1999. Executive action - through agency rulemaking, enforcement discretion, and executive orders - has increasingly supplemented or substituted for legislative change.
Economists broadly agree that deregulation of airline and trucking markets in the late 20th century reduced consumer prices and expanded access, though the distributional effects and long-run consequences remain subjects of active dispute. The evidence for telecommunications is somewhat thinner and more contested. The role of financial deregulation in the 2007-2008 financial crisis is contested, with researchers disagreeing on causation, mechanism, and the relative weight of regulatory versus market failures. Environmental and labor deregulation produce sharper disagreement, where empirical findings interact directly with contested value claims about risk, externalities, and the proper scope of government.
The Trump administration (2017-2021) pursued an explicit two-for-one deregulatory agenda - requiring two rules to be rescinded for each new one issued - and claimed substantial regulatory cost reductions. The Biden administration reversed or suspended many of those rollbacks. The second Trump administration (2025-) has resumed aggressive deregulatory action across multiple agencies, including significant restructuring of the Environmental Protection Agency and the Consumer Financial Protection Bureau. The pace and scope of these changes remain subjects of active legal and political dispute.
Economists across institutions show broad, independently-arrived-at agreement that deregulation of airline and trucking markets in the late 1970s and 1980s lowered prices and increased output. This finding is replicated across heterodox and mainstream sources and across decades of subsequent research, giving it unusual durability relative to other deregulatory claims. See deregulation-consensus-transportation-deregulation-consensus.
No comparable consensus exists regarding telecommunications, financial, environmental, or labor deregulation. Findings in those domains are more sensitive to methodological choices and are contested across researchers.
Supply-side and free-market viewpoint: Deregulation removes government-imposed frictions that suppress investment, competition, and consumer choice. Regulatory compliance costs fall disproportionately on small firms and new entrants, protecting incumbents. The proper default is market allocation; regulation requires an affirmative justification in demonstrated market failure. See deregulation-supply-side-economics-viewpoint.
Progressive and labor viewpoint: Markets left unregulated systematically under-price externalities, concentrate power in large firms, and shift costs onto workers, consumers, and the environment. Deregulation tends to benefit capital over labor and produces privatized gains with socialized losses. See deregulation-progressive-viewpoint.
Public choice and institutional viewpoint: Both regulation and deregulation are outputs of political processes subject to capture by concentrated interests. Regulatory agencies can be captured by industries they oversee; deregulatory coalitions can be captured by firms seeking to disable competitors' compliance costs. Institutional design matters more than the directional label. See deregulation-public-choice-viewpoint.
Technocratic centrist viewpoint: Regulatory policy should be evaluated on cost-benefit grounds sector by sector, without a prior ideological commitment either to expansion or reduction of rules. Some existing regulations are inefficient and should be removed; others are undersupplied. The aggregate label “deregulation” obscures more than it reveals. See deregulation-technocratic-centrist-viewpoint.
Financial deregulation and the 2008 crisis: Repeal of Glass-Steagall provisions and loosened oversight of mortgage-backed securities are disputed as contributing causes of the financial crisis, with opposing parties including Congress, banking regulators, academic economists, and the Financial Crisis Inquiry Commission. See deregulation-controversy-glass-steagall-2008-crisis-controversy.
DOGE and agency restructuring (2025-): The Department of Government Efficiency's rapid reduction of regulatory agency staffing and enforcement capacity has generated litigation, congressional conflict, and dispute over the constitutional limits of executive reorganization authority. See deregulation-controversy-doge-agency-restructuring-controversy.
Net neutrality repeal: The FCC's 2017 repeal of Obama-era net neutrality rules and subsequent litigation and re-adoption cycles produced a prolonged inter-agency and judicial dispute over the scope of FCC authority and the economic effects on internet access markets. See deregulation-controversy-net-neutrality-controversy.
1. Alfred E. Kahn, The Economics of Regulation: Principles and Institutions (New York: Wiley, 1970; reprint MIT Press, 1988). Foundational treatment of regulatory economics preceding the deregulatory wave.
2. Elizabeth E. Bailey, David R. Graham, and Daniel P. Kaplan, Deregulating the Airlines (Cambridge, MA: MIT Press, 1985). Standard empirical account of airline deregulation effects.
3. Clifford Winston, “Economic Deregulation: Days of Reckoning for Microeconomists,” Journal of Economic Literature 31, no. 3 (September 1993): 1263-1289. Cross-sector review of deregulation outcomes through the early 1990s.
4. Financial Crisis Inquiry Commission, The Financial Crisis Inquiry Report (Washington, DC: U.S. Government Printing Office, 2011). Official commission findings; note that commissioners filed both majority and dissenting conclusions, reflecting unresolved interpretive disputes.
5. Susan E. Dudley and Jerry Brito, Regulation: A Primer 2nd ed. (Washington, DC: George Washington University Regulatory Studies Center and Mercatus Center, 2012). Overview of U.S. regulatory process and cost-benefit methodology.
6. Thomas W. Hazlett, The Political Spectrum: The Tumultuous Liberation of Wireless Technology, from Herbert Hoover to the Smartphone (New Haven: Yale University Press, 2017). Case study of spectrum deregulation in telecommunications.
7. Executive Order 13771, “Reducing Regulation and Controlling Regulatory Costs,” 82 Fed. Reg. 9339 (January 30, 2017). The two-for-one deregulatory order of the first Trump administration.