Contents
The Core Idea
How to See It
How to Use It
The Mechanism
Founders & Leaders in Action
Visual Explanation
Connected Models
One Key Quote
— Arnold Harberger, Taxation and Welfare (1964)"The welfare cost of a tax is the loss of consumer and producer surplus that is not offset by the tax revenue collected."
Analyst's Take
Test Yourself
Where is the deadweight loss?
A government imposes a 10% tax on luxury cars. Sales of luxury cars fall by 15%. The government collects tax revenue from the cars that are still sold.
A company removes a lengthy approval process for small purchases. Previously, employees had to get manager sign-off for any purchase over $50. Now they can spend up to $500 without approval.
A city imposes a tax on sugary drinks to reduce obesity. Consumption of sugary drinks falls by 20%.
Top Resources
Why this matters next
Deadweight Loss applied the Incentives mental model
Deadweight Loss applied the Supply and Demand mental model
Deadweight Loss applied the Public Goods mental model
Deadweight Loss applied the Quality mental model
Deadweight Loss applied the Measurement mental model
Deadweight Loss applied the Cost mental model
Frequently asked questions
What is Deadweight Loss?
Deadweight Loss is a mental model used for better thinking and decision-making.
How do you apply Deadweight Loss?
To apply Deadweight Loss, identify situations where this framework is relevant, then use it as a lens to evaluate your options and decisions. The model is most useful when combined with other complementary mental models.
What category does Deadweight Loss fall under?
Deadweight Loss falls under the Economics & Markets category of mental models. Other models in this category can be found on the Economics & Markets hub page.
Why is Deadweight Loss important?
Deadweight Loss is important because it provides a structured way to think about problems that would otherwise be approached with intuition alone. Understanding this model helps you avoid common reasoning errors and make better decisions.
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