The Global Risks Forum (GRF)
Public purpose capital is the money a state commits to long-lived assets and institutions: roads, grids, schools, hospitals, public development banks and sovereign funds. How it is planned, appraised, selected, executed and maintained decides whether borrowing builds productive capacity or leaves debt without assets. This page sets out the principles that govern public capital allocation, how the quality of those institutions is assessed, and who holds the decisions the evidence serves.
GRF · Established · service level R0
Public investment management is how a state plans, appraises, selects, executes and maintains its long-lived assets and institutions, from roads, grids, schools and hospitals to public development banks and sovereign funds. It decides whether borrowing builds productive capacity or leaves debt without assets, and the IMF PIMA framework assesses it.
The cities where people, assets and financial activity concentrate, shown for Mexico as an example geography for this subject.
Public investment and capital allocation principles. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.
When projects enter the budget before they are appraised, selection follows visibility rather than value. Independent appraisal, published criteria and a single project pipeline are what keep allocation tied to stated public purpose.
Delays, cost overruns and under-execution of capital budgets push spending into later years, crowd out new projects and weaken the link between the debt incurred and the assets delivered.
Operations and maintenance compete with new projects in every budget round and usually lose. Deferred maintenance shortens asset life, raises later replacement costs and turns a stock of assets into a contingent liability.
State-owned enterprises, public development banks, sovereign funds and guarantees move public capital beyond the annual budget. Without consolidated reporting, the true size and risk of public investment is not visible to parliament.
Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.
| Term | Definition |
|---|---|
| PIMA | The IMF Public Investment Management Assessment, which rates fifteen institutions across planning, allocation and implementation. |
| Capital budget execution rate | Actual capital spending as a share of the approved capital budget. |
| Public investment efficiency gap | The difference between the public capital a country achieves for its spending and what the most efficient countries achieve. |
Each indicator carries its unit, its cadence, the kind of source behind it and the evidence label a value would carry. No values are shown: a programme supplies them under its own authority.
| Indicator | Unit | Cadence | Source type | Label |
|---|---|---|---|---|
| PIMA institutional design and effectiveness rating | rating by institution (low, medium, high) | per assessment | IMF Public Investment Management Assessment | OFFICIAL |
| PEFA public investment management score | grade (A to D) | per assessment | PEFA assessment report | OFFICIAL |
| Capital budget execution rate | percent of approved capital appropriation | annual | Budget execution reports | OFFICIAL |
| General government investment | percent of GDP | annual | National accounts, IMF Investment and Capital Stock Dataset | ESTIMATED |
| Public capital stock | percent of GDP | annual | Perpetual inventory estimates | MODELLED |
| Major projects with published appraisal | percent of projects above the national threshold | annual | Treasury project registers | REPORTED |
| Maintenance allocation against asset base | percent of estimated asset replacement value | annual | Budget documents, asset registers | ESTIMATED |
| Public investment efficiency gap | percent distance from the efficiency frontier | per assessment | Frontier analysis of inputs and infrastructure outputs | MODELLED |
The topic as a computational graph: named sources feed the methods, an evidence review gates the outputs, and the decisions stay with the authorities that hold them.
Fig. 02Nodes carry their type, two metric rows and a state; connectors show what feeds what; dashed frames name the owners; the timeline is the cadence. Design of the pipeline, not a record of a run.
Named public datasets and institutional records, each with its licence class. Sources by agreement are used only under their terms and never republished.
| Source | What it gives | Licence class |
|---|---|---|
| IMF Public Investment Management Assessment reports | Institutional ratings across planning, allocation and implementation, with reform priorities | Public where published by the authorities, IMF terms |
| PEFA assessment reports (PEFA Secretariat) | Scored public financial management performance, public investment included | Public where published by the government, PEFA terms |
| IMF Investment and Capital Stock Dataset | Public, private and partnership investment and capital stock series by country | Free, IMF copyright and usage terms |
| OECD Budget Practices and Procedures Survey | Institutional features of capital budgeting across member and partner countries | CC BY 4.0 |
| Public Development Banks and Development Financing Institutions Database (Finance in Common, AFD and Peking University) | Mandates, ownership and size of public development banks worldwide | Free, attribution |
| National budget documents and audit reports | Capital appropriations, execution and supreme audit findings | Public records, terms per government |
Capital Nexus prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.
| Who decides | The question | Evidence this page serves |
|---|---|---|
| Finance and planning ministries | Which projects enter the budget, in what order, and under which appraisal standard | PIMA and PEFA dimensions on appraisal, selection and execution; project register coverage |
| Parliaments and budget committees | Whether multi-year capital commitments are affordable and adequately maintained | Execution rates, maintenance allocation and consolidated commitments outside the annual budget |
| Supreme audit institutions | Which investment programmes warrant performance audit | Execution gaps, cost overruns and appraisal coverage by sector |
| Boards of public development banks and sovereign funds | Whether the mandate, capital and risk appetite remain aligned with stated public purpose | Mandate texts, ownership policies and published financial statements |
Which investments deliver public value that markets will not, and how that case is made.
Whether hazards, climate change and maintenance needs are considered in project selection.
How public assets are recorded, maintained and governed over their life.
How public backstops, public-private arrangements and state enterprises create contingent obligations.
Public investment management has stages: strategic planning, appraisal, selection, budgeting, implementation and asset management. Weaknesses at any stage reduce value, and research on public investment efficiency finds substantial losses between spending and the assets actually built.
Risk often enters too late. Projects appraised without hazard data may be built in exposed locations or to inadequate standards, and maintenance is frequently underfunded because it is less visible than new construction.
Off-budget commitments can hide risk. Public-private arrangements, state-owned enterprises and implicit backstops can create obligations that crystallize in crises, when fiscal space is smallest.
Political cycles favour visible new projects over maintenance and risk reduction, whose benefits are losses avoided.
Transparency is a safeguard in itself. Publishing project pipelines, appraisal results and asset condition lets legislatures, auditors and citizens see whether capital is going where the stated priorities say it should.
| Method or data | What it shows | Its limit |
|---|---|---|
| Public investment assessments | Strengths and gaps in management | Depend on documents and interviews |
| Cost-benefit analysis | Economic case for projects | Sensitive to discount rates and risk assumptions |
| Asset registers | What the state owns and its condition | Often incomplete |
| Fiscal risk statements | Contingent liabilities | Coverage and quality vary |
The current service level is R0: information and enquiries. An enquiry receives a reference and names the next step; applications, payments, compute allocations and registrations open only when their team, terms and review capacity exist.