Cognitive Scaffold

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MENTAL MODEL · M3922

The Laffer Curve

The Laffer Curve
BusinessHigh supportEconomics
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

A curve describing the relationship between tax rates and tax revenue. It indicates that as tax rates rise from 0% to 100%, tax revenue first increases and then decreases: at 0% there is no revenue, and at 100% no one is willing to work, so there is also no revenue. Therefore, there must be an 'optimal tax rate' that maximizes revenue. It became the theoretical basis for Reagan's tax-cut policies.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Policy inflection point awareness. It reminds us that any policy variable (such as taxes, regulation, subsidies) may have an inflection point where 'more is not better.' Policymakers need to find the 'optimal range' rather than simply 'the more the better' or 'the less the better.'

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Anchor fast decisions

The Laffer Curve depicts an inverted U-shaped relationship between tax rates and total tax revenue: excessively high tax rates suppress the tax base, reducing total revenue, and there exists an optimal tax rate that maximizes revenue. It argues that tax cuts within a certain range can expand the tax base and increase revenue.

MINIMUM ACTION

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E6%8B%89%E5%BC%97%E6%9B%B2%E7%BA%BFZH · Explicit
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