Personal Carbon Allowances: From “Ahead of Their Time” to Policy Necessity?

Steve Dwyer

The Blog Series on a Just Climate Transition by the University of Oxford Climate Alumni Network (OxCAN) delves into the complexities and challenges of the issue, while proffering tangible solutions and pathways. In this post, Tax Specialist Steve Dwyer proposes the revisiting of climate mitigation at the individual/household level through modern and progressive Personal Carbon Allowance schemes to help accelerate climate action.

In 2015, governments committed under the Paris Agreement to limit global warming to well below 2°C above pre-industrial levels, while pursuing efforts toward 1.5°C. A decade later, current policies still point toward warming exceeding 2.5°C. The implementation gap is stark.

Debate has largely focused on state failure and corporate inertia. Far less attention has been paid to the role of individuals—and the policy instruments capable of aligning personal consumption with national carbon targets.

In high-income economies, household consumption accounts for the majority of emissions. In the UK, consumption-based emissions (including imports) remain significantly higher than territorial (i.e. generated in country) emissions. In 2022, these were approximately 740 MtCO₂e and 506 MtCO₂e respectively, implying a per-capita footprint of around 11 tonnes—almost double the global average.

The Core Idea

Personal Carbon Allowances (PCAs) were envisaged as the way to “link personal action with global emissions carbon reduction goals" [1] and thus support the third leg of the government, business, and individual triage aiming to fix the climate crisis. In high-income countries, individuals’ direct emissions (e.g.  heating, lighting, and travel) combined with the emissions embedded in the goods and services (e.g., food and internet provision) supplied to individuals, can represent more than three-quarters of a country’s total consumption emissions (77% was one recent estimate for the UK). 

PCA schemes aim to encourage individuals to reduce their emissions, most of which contain the common feature of allocating emission allowances to individuals or family units, combined with economic incentives to minimise emissions. Monetary incentives to encourage individuals to reduce emission consumption can be delivered by carbon pricing and/or using a Personal Carbon Trading (PCT) system that facilitates emissions allowance trading, where individuals whose emission usage is lower than their allowance can sell their surplus allowances to those who want to exceed their allocated allowance, effectively an emission trading system (ETS) for individuals.         

PCAs were first proposed in the 1990s and most early models involved variations of PCT schemes: every adult or every household would receive an emissions allowance aligned with a national cap. Those emitting less than their allocation could sell surplus allowances; higher emitters would need to purchase more.

The rationale was threefold: 

Visibility – making carbon limits tangible at the personal level, 

Equity – embedding the concept of a fair per-capita emissions share, and 

Incentives – aligning behavioural change with financial signals.

In 2006–8, the UK briefly considered implementing such a scheme. Following a series of feasibility studies the government concluded that PCAs in the form of PCT was an idea “ahead of its time [2].”High estimated administrative costs, low public familiarity, technological constraints, and political risk contributed to its rejection. 

That conclusion may no longer hold.

Why Revisit PCAs Now?

Three structural changes have altered the policy landscape.

First, digital infrastructure has transformed. Real-time payments systems, automated transaction data, smartphone applications and AI-based carbon estimation tools dramatically reduce the administrative barriers that once seemed prohibitive.

Second, carbon pricing is now well established. ETSs and carbon taxes operate across multiple jurisdictions. The UK ETS is established, and carbon border adjustments are expanding. The conceptual groundwork for economy-wide carbon pricing is no longer experimental.

Third, distributional concerns have moved to the centre of climate politics. Policies perceived as regressive have triggered backlash in multiple countries. Any durable decarbonisation pathway must integrate fairness explicitly.

Together, these changes suggest that the underlying logic of PCAs remains sound — but their design requires modernisation [3].

A Simpler Model: Carbon Pricing with Dividend

A modern PCA system may not require individual trading. A more feasible approach combines:

• Comprehensive carbon pricing applied across goods and services; and

• Equal per-capita redistribution of revenues—a Carbon Universal Basic Income (CUBI).

Under this model, carbon pricing is applied upstream within supply chains through taxation or expanded emissions trading. The resulting revenue is redistributed equally to individuals or households.

The behavioural effect mirrors PCT without requiring citizens to transact in allowances. Individuals/households whose consumption emissions fall below the national average would receive more in dividend than they pay in carbon costs. Higher emitters would pay more than they receive. 

A simple example is to assume a carbon price of £100 per tonne applied broadly across household-related consumption of at least 500m tonnes of CO₂e could generate at least £50 billion per year in additional receipts allowing an annual dividend of approximately £1,000 to each of the UK’s 50 million plus adults. The government acts as the intermediary in what is effectively an automatic settlement mechanism. The incentive structure of PCAs is preserved; the complexity is reduced. 

Such magnitudes are not trivial. A four-figure annual dividend is likely to influence behaviour among lower- and middle-income households, particularly if combined with complementary policies.

Distributional Effects: Progressive in Design

A frequent criticism of carbon pricing is regressivity. Lower-income households spend a larger proportion of income on energy-intensive necessities such as heating and food. However, emissions rise strongly with income. The highest income deciles in the UK have carbon footprints roughly three times those of the lowest deciles. While poorer households emit more per pound spent, wealthier households consume substantially more in aggregate.

Institute for Fiscal Studies research indicates that uniform carbon pricing alone would be mildly regressive. But when revenue is recycled equally per capita, the net effect becomes progressive. Roughly the lowest five income deciles would benefit; the highest four would be net contributors; the middle decile would be broadly neutral.

Of course, averages mask heterogeneity. Rural low-income households with high transport dependence or poorly insulated homes could be adversely affected. Mitigation mechanisms — targeted retrofit grants, transport support, interest-free electrification loans — would remain necessary. The key point is structural: distributional outcomes are determined by policy design. A carbon-pricing-plus-dividend model can be explicitly progressive.

Fiscal and Political Considerations

As decarbonisation progresses, carbon pricing revenues will decline. A fully hypothecated dividend would therefore shrink over time unless offset by rising carbon prices. Policy options include partial revenue recycling, investment in sovereign wealth mechanisms, or gradual transition toward broader universal income schemes. Declining revenues would, in principle, reflect policy success.

Politically, any policy imposing visible costs faces resistance. Carbon pricing is no exception. A central challenge is that net contributors—typically higher-income households—may be more politically vocal than beneficiaries.

However, a dividend-based model reframes the policy. Rather than a tax increase, it becomes a redistribution mechanism combined with behavioural incentives. International precedents, such as carbon fee-and-dividend proposals and Alaska’s Permanent Fund Dividend, demonstrate that universal payments can sustain political legitimacy when transparently structured. Linking climate policy with inequality reduction may broaden political support.

From Radical to Realistic

The core idea behind PCAs—that individuals should have a transparent and equitable stake in national carbon limits—is compelling. A system combining comprehensive carbon pricing with equal per-capita dividends offers a pragmatic pathway, retaining the fairness and incentive logic of PCAs without the administrative burden of individual trading.

Climate policy must now operate at a scale commensurate with the crisis. Incremental adjustments are unlikely to deliver net zero in time. Structural reforms that align markets, households, and national targets are required. Personal carbon allowances, modernised and simplified, may no longer be “ahead of their time.” They may be an idea whose time has finally arrived.

Stephen (Steve) Dwyer is a doctoral researcher at the University of Manchester, specialising in personal carbon accounting, environmental taxation, and climate policy. He holds MSc degrees from Oxford and SOAS, and previously spent 25 years as an international corporate tax specialist working with major firms and multinational corporations.

References

[1] F. Nerini, T. Fawcett, Y. Parag et al. (2021) ‘Personal Carbon Allowances Revisited’, Nat Sustain 4, 1025–1031, https://doi.org/10.1038/s41893-021-00756-w.

[2] Defra (2008) ‘Synthesis Report on the Findings from Defra's Pre-feasibility Study into Personal Carbon Trading’, London.

[3] S. Dwyer. (2025) ‘Personal carbon allowances: an idea whose time has come?’, in Environmental Tax Reforms for a Just Energy Transition. Critical Issues in Environmental Taxation, Volume XXVII.  Cheltenham: Edward Elgar Publishing, pp. 175–191. doi:10.4337/9781035366088.00020.  

Blogs are the opinions of their authors and do not represent the official views of OxCAN.