Public Economics - Taxation and Revenue

Public economics examines how governments raise resources and allocate them to collective ends. Taxation and revenue policy lie at its heart, balancing economic efficiency with equity and fiscal sustainability. Core questions address how different levies—on income, consumption, property and environmental externalities—affect individual incentives, business behaviour and aggregate demand. Modern research blends micro-founded models of labour supply and capital allocation with computable general equilibrium frameworks to quantify behavioural responses, tax-revenue trade-offs and distributional impacts. At the same time, advances in data and microsimulation allow near real-time assessment of reforms, from basic income schemes to environmental levies and green innovation incentives. Across jurisdictions, debates focus on optimal rate structures, revenue-recycling mechanisms, the role of automatic stabilisers and the design of fiscal rules that balance public-good provision with sound public finances. The field’s global reach spans carbon taxes and digital-economy levies to social transfers and redistributive income taxation, illuminating the intertwined goals of efficiency, equity and sustainable revenue generation.

Research from Nature Portfolio

One study has developed a panel analysis of green taxation across Chinese provinces, showing that well-calibrated levies on polluting activities significantly accelerate regional low-carbon growth and stimulate patenting in environmental technologies. The research uncovers a trade-off whereby overly aggressive rates can crowd out broader innovation capacity, suggesting that policy design must strike a balance between environmental ambition and enterprise dynamism.

Another article uses a spatial difference-in-differences approach to evaluate higher SO₂ emission tax rates in Chinese cities. It finds clear local reductions in particulate concentrations alongside beneficial spillovers in neighbouring jurisdictions, while also identifying conditions—such as industrial factor agglomeration—that can offset intended gains. The work highlights the importance of co-ordinated tax and trading reforms to maximise air-quality benefits.

Public Economics - Taxation and Revenue publication trend

The graph below shows the total number of articles in public economics - taxation and revenue across all publications each year (not limited to Nature Index journals).

Technical terms

Green taxation: Levies on emissions or resource use designed to internalise environmental costs and incentivise cleaner technologies.

Spatial spillover effect: Indirect benefits or costs of a policy in neighbouring regions, captured using spatial econometric methods.

Negative Income Tax: A subsidised income-support mechanism in which individuals below a threshold receive payments rather than pay tax.

Multi-objective programming: An optimisation technique that balances competing policy goals, such as poverty reduction and fiscal cost.

Tax-benefit microsimulation: A modelling framework that applies tax and transfer rules to individual or household data to predict distributional impacts.

Computable General Equilibrium (CGE) model: A quantitative simulation tool that ensures market-clearing across all sectors and captures economy-wide effects of tax reforms.

References

1. Introduction.
2. Green taxation, regional green development and innovation: Mechanisms of influence and policy optimization. Humanities and Social Sciences Communications (2024).
3. The spatial spillover effect of higher SO2 emission tax rates on PM2.5 concentration in China. Scientific Reports (2023).
4. Social transfer policies and child poverty in European countries: Evaluating policy alternatives through a multiobjective programming model. Socio-Economic Planning Sciences (2024).
5. Labour supply responses to a negative income tax in Spain. Journal of Policy Modeling (2024).
6. The effects of environmental tax reform on urban air pollution: A quasi-natural experiment based on the Environmental Protection Tax Law. Frontiers in Public Health (2022).