Liquor, Tobacco and Sin Goods
What Makes a Good a "Sin Good"?
How economists think about goods like alcohol and tobacco using externalities and "internalities", and why governments tax or restrict them.
Sin goods are products seen as harmful, like alcohol, tobacco, gambling and sometimes sugary drinks.
Externalities
Some harms fall on others:
- Drunk driving accidents.
- Second-hand smoke.
- Healthcare costs paid by public systems.
- Domestic violence linked to alcohol.
Internalities
Some harms fall on the user, but they may not fully account for them because of:
- Addiction.
- Present bias: enjoying now, paying later with health.
- Starting young, before fully understanding risks.
Economists call these internalities.
Policy tools
- Taxes to raise prices.
- Age limits and sales restrictions.
- Advertising bans.
- Warnings on packages.
- Bans (prohibition).
The debate
- Paternalism: should governments protect people from their own choices?
- Freedom: adults may choose risks.
- Revenue: sin taxes raise large sums, creating mixed incentives for governments.
The smoker's future self
A 16-year-old starts smoking to fit in. Twenty years later, addicted, he wishes he could quit, showing how present choices bind future selves.
Thinking sin taxes are only about raising money
They also aim to reduce harms to users and others.
Key takeaways
- Sin goods include alcohol, tobacco and gambling.
- Externalities harm others; internalities harm users.
- Taxes, age limits, ad bans and warnings are tools.
- Paternalism and freedom are debated.
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