WSJ Opinion: Free Expression

Does Supply-Side Economics Still Work?

Nov 19, 2025
Matthew Elliott, a member of Britain's House of Lords and co-author of 'Prosperity Through Growth', discusses the relevance of supply-side economics today. He explores the political shift against these principles, both from the left and within the right. Elliott highlights the risks of tariffs and emphasizes the urgent need for fiscal reforms to prevent a potential debt crisis in Europe. He also defends free trade as a tool for growth and shares insights on the political impact of recent tax policies, particularly the lessons from Liz Truss's controversial mini-budget.
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INSIGHT

Supply-Side As Conservative North Star

  • Supply-side economics centered on low taxes, deregulation, and free trade drove growth from the 1980s to 2000s.
  • That approach became the defining conservative economic philosophy for decades across many countries.
INSIGHT

Laffer’s Five Growth Pillars

  • Arthur Laffer framed five 'kingdoms' for growth: taxation, spending, regulation, sound money, and trade.
  • Matthew Elliott argues countries need low taxes, controlled spending, smart regulation, sound money, and open trade to maximize growth.
ADVICE

Cut Tax Rates To Attract Entrepreneurs

  • Reduce punitive tax rates that drive entrepreneurs and wealthy taxpayers overseas.
  • Reintroduce incentives like lower capital-gains rates to encourage domestic investment and entrepreneurship.
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