When a government corrects market failure by taxing a negative externality, one potential problem is that
Question 1 Report
When a government corrects market failure by taxing a negative externality, one potential problem is that
Answer Details
The correct answer is that it may be difficult to accurately estimate the external cost and set the correct tax rate.
When a government uses a Pigouvian tax to correct a negative externality, it should set the tax equal to the external cost per unit at the socially optimal output level. However, measuring external costs precisely is extremely difficult. Pollution damage, health impacts, and environmental degradation are hard to quantify in monetary terms. If the tax is set too low, the externality is only partially corrected; if set too high, output falls below the efficient level. This information problem is a genuine limitation of taxation as a policy tool.
Taxes rarely eliminate an externality completely; they aim to reduce it to the socially optimal level. Taxes do raise government revenue, which is often cited as an advantage. Consumers typically reduce but do not entirely avoid taxed products, especially for goods with inelastic demand.
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