Papua New Guinea's Infrastructure Crisis: Why Billions in Public Spending May Fail to Deliver Growth

An IMF assessment warns that Papua New Guinea’s declining infrastructure, weak budgeting and poor project oversight threaten economic growth, fiscal stability and investor confidence. The report calls for transparent spending, faster project completion, stronger financial management and climate-resilient infrastructure to attract investment and support sustainable development.

Papua New Guinea faces a growing infrastructure crisis as weak public investment management, unreliable budgeting and poor project oversight threaten economic development and investor confidence. A July 2026 assessment by the International Monetary Fund (IMF), conducted through its Fiscal Affairs Department, warns that the country must improve how it plans, finances and delivers infrastructure rather than simply increasing public spending. The findings raise important questions about fiscal discipline, development financing and the government's ability to achieve its Medium-Term Development Plan IV (2023–2027).

Conducted in February 2026 at the request of Papua New Guinea's Department of Treasury, with financial support from Japan, the Public Investment Management Assessment (PIMA) identifies serious weaknesses in project selection, budgeting, implementation and maintenance. While institutional arrangements exist, poor enforcement, fragmented regulations and limited technical expertise prevent public investments from delivering their full economic benefits.

Three Decades of Decline: Papua New Guinea's Infrastructure Warning

One of the IMF's most significant findings is that Papua New Guinea's public capital stock has declined considerably over the past 30 years. Public investment remains relatively low compared with peer economies, while spending has been insufficient to maintain existing infrastructure and develop new assets.

This creates challenges for businesses, communities and government agencies. Deteriorating infrastructure can increase transportation costs, disrupt essential services, weaken market connectivity and discourage private investment.

Despite growth in the resource sector, fiscal consolidation and debt reduction commitments limit the government's ability to substantially increase infrastructure spending.

The central challenge is therefore not simply finding additional money but ensuring that existing resources generate greater economic and social returns.

For economic planners, improving infrastructure efficiency could support business competitiveness, strengthen public services and create better conditions for investment without significantly increasing debt.

Billions at Stake? Budget Weaknesses Put Development Projects at Risk

The IMF identifies serious problems in capital budgeting and project execution. Capital expenditure frequently falls below approved allocations, while recurrent spending exceeds budgeted amounts, creating uncertainty over infrastructure delivery.

A major weakness is the absence of a clearly defined capital budget. Inconsistent expenditure classifications make it difficult to determine how much government spending actually creates or improves infrastructure.

Project appraisal procedures are applied to only a minority of proposed investments. Limited technical expertise and insufficient socioeconomic data prevent authorities from consistently evaluating project costs, benefits and long-term sustainability.

Political considerations also frequently influence investment decisions at provincial and district levels, sometimes taking priority over economic and social returns.

These weaknesses create risks for construction companies, engineering firms and suppliers, including delayed payments, disrupted contracts and uncertain project schedules.

The IMF recommends adopting a finish-first principle, requiring government departments to prioritize completing existing projects before approving new investments.

It also calls for annual publication of project costs, expenditure allocations and completion timelines to improve transparency and accountability.

Climate Threats and Financial Risks Test Investor Confidence

Papua New Guinea's infrastructure vulnerabilities are intensified by climate change and natural disasters. The IMF's 2024 Climate Public Investment Management Assessment identified significant climate exposure, yet climate considerations remain poorly integrated into infrastructure planning and project evaluation.

Weak maintenance systems further increase the risk of infrastructure deterioration, particularly outside the road sector.

The assessment also highlights inadequate oversight of public corporations, fragmented donor financing arrangements and weak monitoring of decentralized investment programmes.

For international development partners, these weaknesses raise concerns about project sustainability, financing efficiency and the government's ability to meet counterpart funding commitments.

Private investors face similar challenges. Unpredictable cash releases, procurement weaknesses and insufficient project monitoring can increase commercial uncertainty.

However, stronger investment governance could create opportunities for infrastructure developers, engineering companies, maintenance providers and climate-resilient technology businesses.

Better project preparation and reliable financing arrangements would also make public-private partnerships more attractive, provided their financial risks are properly disclosed and managed.

The Reform Blueprint: Turning Infrastructure Spending Into Economic Growth

The IMF recommends establishing a transparent capital budget, improving medium-term expenditure forecasts and strengthening Treasury oversight of infrastructure allocations.

It also proposes predictable cash releases for priority projects, particularly those approaching completion and those requiring government contributions to donor-supported investments.

New regulations under the Public Financial Management Act should govern the entire investment cycle, including project appraisal, budgeting, procurement, implementation and monitoring.

Longer-term reforms should strengthen sector investment planning, climate resilience, asset management and project evaluation.

The District Services Improvement Program and Provincial Services Improvement Program should face stronger reporting requirements, credible budgeting and full expenditure accountability.

The government should also disclose potential financial liabilities associated with public corporations, subnational investments and public-private partnerships.

For development partners, financing decisions should increasingly consider project readiness, maintenance requirements and institutional capacity. Businesses should assess payment reliability, procurement transparency and implementation risks before committing resources.

The IMF does not quantify the economic gains from these reforms, but its findings underline the importance of improving investment efficiency.

Ultimately, Papua New Guinea's infrastructure future will depend on whether government spending translates into completed projects, durable public assets and stronger economic productivity. With limited fiscal resources and growing development demands, disciplined budgeting, transparent investment decisions and effective implementation will be essential to sustaining growth and attracting long-term private investment.