❓ Hon. Spagnolo asks about the sensitivity of the Perth Park business case's benefit-cost ratio (BCR) to cost overruns and lower attendance. The answer defends the 7% discount rate and highlights the project's economic benefits as determined by ACIL Allen.
AnsweredQoN 984Legislative Council
Asked
2 December 2025
Member
Portfolio
Deputy Premier; Treasurer; Minister for Transport; Sport and Recreation
QuestionView source ↗
I refer to the ACIL Allen Perth Park Business Case Summary, and I ask: (a) the business case generates a benefit cost ratio of 1.35 at a 7 per cent discount rate. How sensitive is that ratio to cost blowouts or lower event attendance?
AnswerView source ↗
Answered
24 February 2026
Responded by
Parliamentary Secretary to the Deputy Premier; Treasurer; Minister for Transport; Sport and Recreation
Response time
7 days
(a) The use of a 7 per cent discount rate is an accepted methodology for BCR analysis.
Leading economics firm ACIL Allen independently prepared the business case which found the project would deliver $61 million in economic activity every year - delivering long-term economic and community value, with an undiscounted benefit-cost ratio of 1.84.
Leading economics firm ACIL Allen independently prepared the business case which found the project would deliver $61 million in economic activity every year - delivering long-term economic and community value, with an undiscounted benefit-cost ratio of 1.84.
Explore WA Government Data
Search the full archive in the free dashboard, or query programmatically via API.
Explore more
Government Gazette
Appointments, regulatory notices, planning changes.
Hansard
Debates, questions, speeches and sentiment.
Tabled Papers
Reports and documents tabled in Parliament.
Committees
Committee profiles and recent reports.
Regulations
Subsidiary legislation with filters and summaries.
Bills
Proposed laws and parliamentary progress.
Acts
Current WA legislation and summaries.
Explanatory Memoranda
Bills with EMs (text/PDF) available.
Members
MP profiles, party breakdown and rankings.
Pollie Rankings
Data-driven rankings across 19 categories.
Amendment Chains
Track how schemes and regulations evolve over time.