Public Investment as % of GSP — Methodology and Sources
What this measures
Total public-sector gross fixed capital formation (GFCF) — what the government and its corporations spend building physical assets — as a percent of Gross State Product. It captures the government's direct investment footprint on the Victorian economy, distinct from how many people it directly employs.
How values are derived
public GFCF (ABS 5220.0, current prices) / GSP (ABS 5220.0, current prices) × 100
For each state, both series are taken from the same ABS table — 5220.0 Australian National Accounts: State Accounts — at current prices, financial year ending 30 June. "Public ; Gross fixed capital formation" is the total public sector: general government plus public corporations (e.g. water and transport authorities).
| State | Public GFCF series | GSP series | ABS table |
|---|---|---|---|
| Victoria | A2336107C | A2336321T | Table 3 |
| NSW | A2336139W | A2336320R | Table 2 |
| QLD | A2335972C | A2336322V | Table 4 |
Because each state's numerator and denominator come from one table at the same prices, every ratio is internally consistent and needs no inflation adjustment.
What the comparators show
By 2024-25 all three states sit close together — Vic 5.9%, NSW 5.6%, QLD 6.1% — so Victoria is not uniquely high in level. What is distinctive is the growth: Victoria ran the lowest public-investment share of the three in 2014-15 (3.7%) and grew it +60%, versus NSW +34% and QLD +13%. So the defensible reading is "steepest ramp", not "highest level".
Why this metric exists
Public-sector employment as a share of the Victorian workforce barely moved over the decade. But that understates the government's economic weight, because the Big Build is executed largely by private contractors — those workers are private-sector headcount, so they never show up in public-sector employment figures, even though the government pays for the work. Measuring the investment dollars as a share of the economy captures that footprint directly.
Why not "jobs created/supported by government"
A "jobs supported" figure requires an economic multiplier (input-output modelling). Multipliers are contested and are the same device governments use to justify large projects. This metric deliberately avoids them: it is a hard ABS ratio, not a modelled estimate.
Caveats
- Public GFCF here is the total public sector (general government + public corporations), not general government alone.
- A rising investment share is not, on its own, evidence of waste — it shows scale and timing of the capital programme. Whether the spend delivered value is a separate question (see the Capital Programme section for cost-vs-announced analysis).
- The most recent year can be revised by the ABS in later releases.
Sources
- ABS 5220.0 — Australian National Accounts: State Accounts — Table 3 (Victoria), Table 2 (NSW), Table 4 (QLD)
- GSP figures for all three states cross-checked against the separately verified GSP series used in GSP per Capita — exact match (e.g. Vic FY 2014-15 = $382.8bn, FY 2023-24 = $608.5bn).