ChainWhat it assumes · how to break it
Start
The government sets a minimum price per unit of alcohol, as Scotland has done since May 2018, so drinks cannot be sold below a floor based on their alcohol content.
1
As a result, retailers and producers keep the extra spending as a windfall gain, while the government raises no revenue.
windfall gain
windfall gain
Assumes: No tax is used alongside the floor.
But: Raising alcohol duty at the same time would let the government capture part of the extra spending.
2
This means the policy rewards the firms that sell the harmful product, and there is no extra revenue to spend on treatment or education.
opportunity cost
opportunity cost
Assumes: The government has no other source of funding for treatment.
But: Treatment can be funded from general taxation, so the lack of revenue matters less than it seems.
3
At the same time, drinkers who cannot afford the higher price may turn to illegal or cross-border sources, or cut spending on essentials.
unintended consequences · black market
unintended consequences · black market
Best link to attack
Assumes: Cheaper illegal or cross-border alcohol is easy to get.
Assumes: Cheaper illegal or cross-border alcohol is easy to get.
But: When the floor is modest and legal alcohol is still widely sold, an illegal market is unlikely to be large.
4
Therefore, the intervention can create new costs that offset its health gains, a net welfare loss: government failure.
government failure · net welfare loss
government failure · net welfare loss
Assumes: The new costs exceed the gains.
But: If heavy drinking falls enough, the health gains may outweigh the windfall and other costs.
End
The floor may enrich retailers and push some drinkers to illegal sources, which is government failure.
Evaluation chain
- E1However, government failure through illegal buying depends on how high the floor is above the market price.
- E2If the floor is modest and legal alcohol stays easy to buy,
- E3then the gain from illegal trading is small and few drinkers turn to it.
- E4So a modest floor is unlikely to cause government failure through black markets; the more likely failures are the windfall to retailers and the harm to dependent drinkers.
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Questions this answers
- Explain how a minimum price may lead to government failure.
- Assess whether minimum unit pricing for alcohol is likely to result in government failure.
- Evaluate a minimum price compared with an indirect tax as a way to reduce alcohol consumption.
Diagram
Minimum price above equilibrium. Show the producer windfall rectangle between Pmin and Pe up to Qd; compare with a tax diagram where the same rectangle would be government revenue.
Reverse and related
Removing the floor → no windfall to retailers, but cheap alcohol and its external costs return.