Policy Brief

Financing the Circular Economy: A G20 Agenda for Sustainable Production and Consumption

Introduction

The global economy has long been operating on a linear model based on a cycle of extracting resources, producing, consuming, and finally discarding goods, once they have served their purpose. This take-make-dispose system, while it has brought about human progress, has concomitantly also placed unsustainable pressure on natural resources, supply chains, and climate systems.

To put things in perspective, global resource use has reached approximately 100 billion metric tonnes annually and is projected to increase 1.5 times by 2060.¹ Municipal waste generation stood at around 2.1 billion tonnes in 2024, expected to grow to 3.8 billion tonnes by 2050.² Meanwhile, only 22 per cent of global e-waste is formally collected and recycled.³

Against this backdrop, a circular economy offers a fundamentally different alternative model prioritising resource efficiency, reuse, recycling, remanufacturing, and regenerative design. This is intended to keep materials in use for as long as possible while minimising waste. It is assessed that a full-scale transition could generate economic benefits of up to USD 4.5 trillion by 2030, while reducing emissions, enhancing resource security, and creating new employment opportunities.⁴

For G20 economies, which collectively account for around 80% of both global GDP and global emissions⁵, the transition to a circular economy is not a marginal sustainability initiative but a macroeconomic restructuring imperative. G20 economies are uniquely positioned, as well as uniquely obligated, to lead this transition.

The Financing Gap in Circular Transitions

The transition to a circular economy is capital-intensive and structurally complex, requiring coordinated financing frameworks that align public policy, private capital, and multilateral development finance. In short, it is fundamentally a financing challenge. Technology and policy frameworks already exist in many G20 economies; what remains underdeveloped is a coherent financial architecture capable of scaling solutions across borders and sectors. Institutions such as the OECD, World Bank, and United Nations Environment Programme (UNEP) have consistently identified the financing gap as a binding constraint, particularly in emerging G20 economies.

Funding gaps

Despite growing policy recognition, circular economy investments remain underfunded relative to their systemic importance. An estimated USD 350 billion in financing and investment has been dedicated to the circular economy globally since 2019, with circular economy-focused corporate and sovereign bonds increasing more than 13-fold between 2019 and 2023 to a cumulative issuance of USD 93 billion.⁶ These, however, remain a fraction of the capital required.

In the EU alone, the annual investment gap for circular economy objectives is estimated at EUR 29 billion (appx. USD 33.6 billion) per year, against an overall investment requirement of EUR 170 billion (appx. USD 197 billion) annually to 2027.⁷

Beyond Europe, the gap is larger still, particularly in emerging G20 economies where circular infrastructure, like collection systems, remanufacturing facilities, materials recovery networks, remains underdeveloped.

Key Constraints

The barriers are not purely about capital availability but also about risk perception, fragmented project pipelines, and the absence of standardized metrics for circularity. Key constraints include:

• High upfront capital costs for circular infrastructure such as recycling systems, reverse logistics, and eco-design manufacturing facilities;
• Uncertainty in revenue generation and risks, particularly in early-stage circular business models like product-as-a-service, remanufacturing etc., that depend on secondary material markets;
• Limited bankability due to lack of historical performance data and standardized credit frameworks;
• Misaligned incentives, where linear production systems remain financially more attractive in the short term; and
• An inconsistent interpretation of the definition of 'circular economy' across financial institutions, making it difficult to identify, compare, and assess circular investment opportunities.

For G20 economies, these constraints are particularly pronounced in sectors such as textiles, construction, plastics, electronics, and automotive manufacturing – mainly industries which are central to global value chains.

The G20 Opportunity in Diversity

G20 economies represent an extraordinary opportunity for circular economy leadership precisely because of their diversity. Advanced economies such as Germany, Japan, and the United Kingdom bring sophisticated regulatory frameworks, deep capital markets, and world-leading circular technology companies. Emerging G20 members including India, Brazil, Indonesia, and South Africa bring demographic scale, growing manufacturing bases, and the chance to build circular infrastructure from the ground up rather than readjusting a legacy linear system. China, as the world's largest manufacturer and the largest single source of material consumption, also holds the potential to reshape global supply chains through circular product design mandates and secondary materials markets.

This diversity is a strength rather than an obstacle, if managed through a coordinated G20 framework. The Ellen MacArthur Foundation's technical paper for the G20 Environment and Climate Sustainability Working Group under South Africa's presidency in 2025, categorically identified aligned financial systems, fiscal reform, blended finance instruments, and circular public procurement as some of the key levers available to G20 governments to unlock the potential of the circular economy.⁸

Building the Financial Architecture for Circular Transition

Translating circular economy ambition into investment reality requires deliberate construction of financial instruments and governance frameworks tailored to the specifics of circular business models. Several building blocks are available and could be systematically deployed.

• Green and circular taxonomies: Taxonomies that define what qualifies as "circular investment" are essential for mobilizing institutional capital for the specified purpose. The EU has already integrated partial circular economy criteria, and several G20 economies are developing national frameworks to adopt specific taxonomies. Harmonization across jurisdictions would further reduce fragmentation and compliance costs significantly.
• Circular Economy Bonds: Along with circular taxonomies, there is a need to issue circular economy bonds, similar to green bonds. These instruments can finance recycling infrastructure, regenerative agriculture, and industrial symbiosis clusters. Further, repayment could be linked to material recovery performance. Over the past few years, nearly 567 circular economy-labelled bonds have been issued, with a cumulative issuance of USD 93 billion, demonstrating capital market appetite for such bonds.⁹ G20 countries should develop common taxonomies for circular economy bond eligibility, to further boost market development and investor confidence.
• Blended finance structures: Blended finance structures combining public, philanthropic, and private capital, can de-risk circular economy investments in emerging markets by providing first-loss capital, guarantees, and concessional finance. Public development finance institutions including multilateral development banks and sovereign wealth funds can play a crucial role in crowding in private investment and attracting institutional capital.
• Extended Producer Responsibility. Extended Producer Responsibility (EPR) schemes shift financial and operational responsibility for end-of-life management of products, to the manufacturers. This creates built-in incentives for durable, recyclable product designs. G20 members should harmonise EPR frameworks, particularly for plastics, electronics, batteries, and textiles, to prevent regulatory arbitrage and create the scale that makes investment in circular infrastructure projects commercially viable.
• Public procurement. G20 governments collectively represent one of the world's largest procurement markets. Circularity requirements could be embedded into public procurement though use of recycled content, product durability, repairability standards, take-back obligations etc. This would create immediate, reliable demand signals for circular products and services, unlocking private investment that currently lacks the market certainty to proceed.

A G20 Agenda for Action

Given the systemic nature of the transition, the G20 is the appropriate platform to coordinate a step-change in circular economy financing. The institutional infrastructure for doing so is already in place with the G20 Sustainable Finance Working Group providing a ready mechanism for setting common standards and mobilising multilateral action.

In addition to that, a G20 circular finance agenda could include:

• A Common Circular Taxonomy Framework to enable cross-border investment
• A G20 Circular Investment Platform to aggregate bankable projects
• A Multilateral Guarantee Facility to reduce risk premiums in emerging economies
• A Circular Data Initiative for harmonised EPR frameworks across key material categories and for metrics on material flows and lifecycle impacts
• Embedding circular economy disclosure requirements in corporate sustainability reporting
• Concessional lending and technical assistance from multilateral institutions and development banks, especially for industrial transition in heavy-emitting sectors.

Such coordination would significantly enhance capital flows into circular economy projects, particularly in developing G20 members.

Conclusion

A full circular transition across G20 economies is assessed to have the potential to generate trillions in economic value, in addition to dramatically reducing carbon emissions and cutting dependence on constrained raw material supply chains. It is also expected to create millions of jobs in new circular sectors like repair, remanufacturing, materials recovery, and circular design.

A coordinated G20 approach anchored in taxonomy alignment, blended finance, multilateral de-risking, and private capital mobilization can transform circularity from a niche sustainability concept into a mainstream economic paradigm. In doing so, G20 economies can simultaneously enhance long-run economic competitiveness, even as they ensure materials security and environmental sustainability in an increasingly resource-constrained global system.

References