Sustainable transport

Final Emission Budget

Economic, environmental, and social impacts

Read Our Report Assessing

The Impact of The Second

Emission Reduction Plan

Who should pay for infrastructure renewals? Intergenerational equity and local government finance

New Zealand councils face a choice: fund infrastructure renewals through today’s rates, past savings, or future debt. This article argues that PAYGO should generally fund renewals, with SAYGO reserved for major assets and debt limited to exceptional cases.

12 June 2026

Oil Shock and Stagflation Risk: New Zealand’s Macroeconomic Exposure to the Iran War

Prolonged Consequences of the Iran War A Global Energy Shock with Domestic Consequences New Zealand is facing an ongoing macroeconomic challenge because of the Israel-US military invasion of Iran in February 2026. The sudden shock to the energy sector caused by the war led to a significant oil price shock, with uncertain duration for the […]

9 April 2026

NZ Households Face $4,000–$6,000 Hit if Fuel Prices Stay Elevated

The escalation of conflict in the Middle East, and the associated risks to shipping through the Strait of Hormuz, have renewed concerns about New Zealand’s exposure to global fuel supply disruptions. As discussed in our earlier analysis, the Strait remains a critical chokepoint for global oil flows. Even partial disruption can transmit rapidly into domestic […]

23 March 2026

Economic impact analysis

Estimate the impact of your activities using our extensive economic assessment frameworks We provide independent economic impact analysis to evaluate the impacts of a project, program or policy on regions, demographic groups, industry or the wider economy.

Economic research

We offer independent review of highly sensitive and technically complex issues. The team at Principal Economics have been involved in a wide range of critical policy and analytical analyses, including development of cost benefit analysis framework development, distributional effect analysis, literature review and policy assessment

Market analysis

Our team of economists help you to understand the demand for your services/products within the wider market. Principal Economics provides insight to the trend of the market and how your investment affect economic outcomes, including labour markets, economic productivity.

Macroeconomic consulting

In the rapidly changing global economy, it is increasingly essential to have a comprehensive understanding of macroeconomic dynamics and conduct a robust analysis of the economic environment to make informed strategic decisions.

Cost benefit analysis

Making decisions in uncertain times needs precise understanding of the costs and benefits. We can assist by identifying fiscal, economic and wellbeing benefits from your investment decision or policy intervention.

Forecasting and modelling

Principal Economics have developed a wide range of robust frontier economic evaluation frameworks to assist with your planning for future investments using best available data.

Business case

We have experience working on the different types of business cases – programme business cases, indicative business cases, detailed business cases and single stage business cases.

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