Taxing Harmful Habits

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Taxes on alcohol, tobacco, and sugar can both mobilize domestic revenue and encourage healthier behavior.
Excise taxes yield on average about 2 percent of GDP in both advanced and developing economies.
Challenges include new products (e-cigarettes, nicotine pouches, low-alcohol beer), inflation-driven revenue erosion, consumer switching to untaxed or illicit alternatives, and cross-border arbitrage.
Three guiding principles for harm-based taxation: capture all unhealthy products, align tax rates with potential harm, and cooperate across borders to limit evasion and smuggling.

“Sin” or “behavioral” taxes have existed for millennia; taxes on beer recorded in ancient Egypt as early as 2400 BCE.
Excise taxes are relatively easy to collect and politically palatable; they reduce consumption and public health expenditures when designed appropriately.

Average revenue yield: about 2 percent of GDP in both advanced and developing economies.
Revenue ranking by product: tobacco yields the most, followed by alcohol; sugary drinks typically raise more modest revenue and remain relatively uncommon.
Recent trends: excise taxation is becoming more popular in developing economies but has recently declined in advanced and emerging market economies due mainly to inflation and changes in consumer behavior.

Principle: tax products based on the amount of the harmful substance and the mode of administration (for example, burning versus heating tobacco), using average consumption patterns.
Existing practices: many countries tax drinks based on sugar or alcohol per liter.
Policy objective: align tax levels with relative health risks while safeguarding revenue.

Hong Kong SAR: wine not taxed at all, while distilled spirits face rates exceeding 100 percent.
São Tomé and Príncipe: palm wine exempt while all other alcoholic drinks are taxed.
Ethiopia: khat leaves remain untaxed despite heavy taxes on alcohol and tobacco.
South Africa: tax on a unit of alcohol in traditional African beer is roughly one-fiftieth what it is on a unit of alcohol in other beer.
India: bidis taxed significantly lower than filtered cigarettes; smoke-free alternatives are banned.
Such misalignment can falsely signal lower health risks, sustain consumption of more dangerous products, and divert investment toward the wrong industries.

New nicotine products reduce exposure to toxicants relative to combustible cigarettes and can be taxed at lower rates that are adjustable as evidence and revenue needs evolve.
New Zealand example: excise rates for combustible tobacco increased by 10 percent or more a year over the past 15 years; smoking fell from 18 percent in 2012 to 8 percent in 2024; uptake of e-cigarettes rose from near zero to 14 percent over the same period. Tax revenues rose until 2020 but have since declined somewhat.
EU draft Tobacco Excise Directive proposes minimum rates for 13 product categories; taxes cigarettes and loose tobacco at similar levels; and sets significantly lower rates for e-cigarettes, heated tobacco products, and nicotine pouches. No tobacco or nicotine product is exempt from taxation, and rates are set to keep pace with or exceed inflation.
German brewers’ nonalcoholic beer accounts for about 9 percent of sales.

Large tax differentials across borders motivate consumers to buy cheaper options elsewhere, reducing health impact and revenue.
Finland: after lowering alcohol tax in 2004, sales of spirits surged to 150 percent in some towns on the border with Sweden.
Norway study: COVID-era border closings showed large cross-border shopping effects in high-tax settings.
EU-wide annual cross-border alcohol purchases estimated at 1.4 billion liters, resulting in excise duty losses of some €4 billion annually.
Paraguay’s very low tobacco taxes have turned it into a hub for cigarettes destined for higher-tax neighbors: these cheap products make up roughly 20 percent of Brazil’s cigarette market and cost that country about $400 million in lost revenue each year.
Policy responses include stricter enforcement where cross-border shopping is illegal and closer regional dialogue on classification of new product lines.

Capture all unhealthy products by closing loopholes and broadening the tax base (examples: taxing wine where currently untaxed; taxing traditional local drinks and stimulants).
Align tax rates with relative health harms by taxing on the harmful substance and mode of administration, using the growing medical evidence base and consumption data.
Differentiate taxes across product categories and technologies (for example, lower rates for less harmful nicotine products) while ensuring no complete exemptions.
Cooperate across borders and with regional bodies to limit evasion, smuggling, and cross-border arbitrage; build consensus on classification of evolving products.
Use harm-based taxation to encourage suppliers to innovate toward safer products and to shift consumption patterns over the long term.

Linking excise taxes to relative health risks can reduce preventable diseases and support sustainable revenues when applied comprehensively and consistently.
Loopholes, misaligned incentives, and fragmented approaches cause revenue losses and continued exposure to avoidable harm.
International and regional institutions (IMF, EU, African Union) are pivotal in advancing frameworks that align taxation with harm and promote innovation toward safer products.

Taxing Harmful Habits, F&D Magazine, March 2026.

Taxing Harmful Habits
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