Tax Policies and Consumer Behavior in Fuel Markets

Taxation of fuel—through excise duties, value-added tax and carbon levies—serves dual objectives of revenue generation and environmental mitigation. Governments adjust tax rates to influence consumer choice, curb greenhouse gas emissions and fund infrastructure. Consumers respond heterogeneously: wealthier households often exhibit lower sensitivity to tax-induced price rises, while lower-income or rural users can face disproportionate burdens. Recent work has highlighted the interplay between tax design, market structure and behavioural responses. Key factors include the extent to which taxes are passed through to pump prices, the differential impact on petrol versus diesel users, and the potential for cross-border purchasing or “carbon leakage” when neighbouring jurisdictions apply divergent rates. Emerging evidence underscores the need for dynamic tax adjustments to maintain real-terms revenue, ensure equity and align with decarbonisation pathways, while complementing broader policies such as vehicle efficiency standards and investment in low-carbon alternatives.

Research from Nature Portfolio

Analysis of petrol and diesel taxation across European Union states demonstrates that higher indirect tax rates generally contribute to modest reductions in passenger car CO₂ emissions. The effect is stronger in countries with above-average tax burdens and persists regardless of whether emissions are scaled to population or GDP. However, real-world affordability gains from rising incomes and inflation have eroded tax impact, prompting calls for indexation of excise duties. This work emphasises that without routine adjustments, temporary relief measures during price spikes may undermine long-run climate objectives and revenue stability.

Tax Policies and Consumer Behavior in Fuel Markets publication trend

The graph below shows the total number of articles in tax policies and consumer behavior in fuel markets across all publications each year (not limited to Nature Index journals).

Technical terms

Fuel duty: A fixed excise tax levied per unit of fuel sold, aimed at internalising external costs and raising public revenue.

Tax pass-through: The proportion of a tax increase that suppliers add to the final consumer price.

Tax incidence: The division of tax burden between consumers and producers, determined by relative elasticities.

Carbon leakage: The displacement of emissions to regions with lower tax rates when domestic levies make local fuel relatively costlier.

Price elasticity of demand: The percentage change in quantity demanded resulting from a 1% change in price, reflecting consumer sensitivity to price alterations.

References

1. The heterogeneous incidence of fuel carbon taxes: Evidence from station-level data. Journal of Environmental Economics and Management (2022).
2. The impact of petrol and diesel oil taxes in EU member states on CO2 emissions from passenger cars. Scientific Reports (2024).
3. Carbon Leakage from Fuel Taxes: Evidence from a Natural Experiment. Environmental and Resource Economics (2024).