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    • Sign up for occasional updates from NZAIA
  • Impact Connector
    • Issue #16 SIA for rural resilience and wellbeing >
      • SIA for rural resilience and wellbeing: Intro
      • The drivers and agents of on-farm change in Aotearoa New Zealand
      • Social-ecological assessment for remote and island communities
      • The Impact of Substandard Rural Housing on Resilience and Wellbeing in Te Tai Tokerau
      • Success factors for planning regeneration in rural areas
    • Issue #15 Economic methods and Impact Assessment >
      • Economic methods in impact assessment: an introduction
      • The Nature of Economic Analysis for Resource Management
      • The State-of-the-Art and Prospects: Economic Valuation of Ecosystem Services in Environmental Impact Assessment
      • Economic impact assessment and regional development: reflections on Queensland mining impacts
      • Fonterra’s policy on economic incentives for promoting sustainable farming practices
    • Issue #14 Impact assessment for infrastructure development >
      • Impact assessment for infrastructure development - an introduction
      • Place Matters: The importance of geographic assessment of areas of influence in understanding the social effects of large-scale transport investment in Wellington
      • Unplanned Consequences? New Zealand's experiment with urban (un)planning and infrastructure implications
      • Reflections on infrastructure, Town and Country planning and intimations of SIA in the late 1970s and early 1980s
      • SIA guidance for infrastructure and economic development projects
      • Scoping in impact assessments for infrastructure projects: Reflections on South African experiences
      • Impact Assessment for Pacific Island Infrastructure
    • Issue #13 Health impact assessment: practice issues >
      • Introduction to health impact assessment: practice issues
      • International Health Impact Assessment – a personal view
      • Use of Health Impact Assessment to develop climate change adaptation plans for health
      • An integrated approach to assessing health impacts
      • Assessing the health and social impacts of transport policies and projects
      • Whither HIA in New Zealand….or just wither?
    • Issue #12 Risk Assessment: Case Studies and Approaches >
      • Introduction
      • Risk Assessment and Impact Assessment : A perspective from Victoria, Australia
      • The New and Adaptive Paradigm Needed to Manage Rising Coastal Risks
      • Reflections on Using Risk Assessments in Understanding Climate Change Adaptation Needs in Te Taitokerau Northland
      • Values-Based Impact Assessment and Emergency Management
      • Certainty about Communicating Uncertainty: Assessment of Flood Loss and Damage
      • Improving Understanding of Rockfall Geohazard Risk in New Zealand
      • Normalised New Zealand Natural Disaster Insurance Losses: 1968-2019
      • Houston, We Have a Problem - Seamless Integration of Weather and Climate Forecast for Community Resilience
      • Innovating with Online Data to Understand Risk and Impact in a Data Poor Environment
    • Impact Connector #11 Climate Change Mitigation, Adaptation, and Impact Assessment: views from the Pacific >
      • Introduction
      • Climate change adaptation and mitigation, impact assessment, and decision-making: a Pacific perspective
      • Climate adaptation and impact assessment in the Pacific: overview of SPREP-sponsored presentations
      • Land and Sea: Integrated Assessment of the Temaiku Land and Urban Development Project in Kiribati
      • Strategic Environmental Assessment: Rising to the SDG Challenge
      • Coastal Engineering for Climate Change Resilience in Eastern Tongatapu, Tonga
      • Climate-induced Migration in the Pacific: The Role of New Zealand
    • Impact Connector #10 Climate Change Mitigation and Adaptation >
      • Introduction
      • Is a “just transition” possible for Māori?
      • Adapting to Climate Change on Scale: Addressing the Challenge and Understanding the Impacts of Asia Mega-Cities
      • How responding to climate change might affect health, for better or for worse
      • Kanuka, Kereru and carbon capture - Assessing the effects of a programme taking a fresh look at the hill and high country land resource
      • Wairoa: Community perceptions of increased afforestation
      • Te Kākahu Kahukura Ecological Restoration project: A story within a story
    • Issue #9 Impacts of Covid-19 >
      • Introduction to Impact Connector Issue 9 – Impact assessment and Covid 19
      • Covid-19 fast-track consenting: climate change legacy key to success
      • Tourism – the long haul ahead
      • Making sense of the impact of Covid-19: planning, politics, and the public good
    • Issue #8 Social Impact Assessment >
      • Challenges for Social Impact Assessment in New Zealand: looking backwards and looking forwards
      • Insights from the eighties: early Social Impact Assessment reports on rural community dynamics
      • Impact Assessment and the Capitals Framework: A Systems-based Approach to Understanding and Evaluating Wellbeing
      • Building resilience in Rural Communities – a focus on mobile population groups
      • Assessing the Impacts of a New Cycle Trail: A Fieldnote
      • The challenges of a new biodiversity strategy for social impact assessment (SIA)
      • “Say goodbye to traffic”? The role of SIA in establishing whether ‘air taxis’ are the logical next step in the evolution of transportation
    • Issue #7 Ecological Impact Assessment >
      • The future of Ecological Impact Assessment in New Zealand
      • Ecological impact assessment and roading projects
      • EcIA and the Resource Management Act
      • Professional Practice and implementation of EcIA
      • EcIA in the Marine Environment
    • Issue #6 Landscape Assessment >
      • Introduction
      • Lives and landscapes: who cares, what about, and does it matter?
      • Regional Landscape Inconsistency
      • Landscape management in the new world order
      • Landscape assessment and the Environment Court
      • Natural character assessments and provisions in a coastal environment
      • The Assessment and Management of Amenity
      • The rise of the THIMBY
      • Landscape - Is there a common understanding of the Common?
    • Issue #5 Cultural Impact Assessment >
      • Introduction
      • Potential of Cultural Impact Assessment
      • The Mitigation Dilemma
      • CIA and decision-making
      • Insights and observations on CIA
      • Achieving sustainability through CIA
      • CIA - Enhancing or diminishing mauri?
      • Strategic Indigenous Impact Assessment?
    • Issue #4 Marine Environment >
      • Introduction
      • Iwi, Impact Assessment and Marine Environment
      • Sea-Bed Mining Application in Taranaki
      • The wreck of the MV Rena
      • High Court RMA Controls on Fishing
      • Initiatives in the Pacific Islands
      • SEA in an NZ context
    • Issue #3 Strategic Environmental Assessment
    • Issue #2
    • Issue #1
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Regulatory impact assessment

  NZAIA briefing on RIA   PDF 227 KB  (Jan. 2024)
This is an overview of RIA, prompted by the widespread media interest in RIA in December 2023.  It has been prepared for the benefit of NZAIA members and the wider impact assessment community.
The briefing document can be distributed freely, but must not be altered or reprinted without authorisation from NZAIA. Use of the material should give full attribution to NZAIA.

Other commentaries:
  In defence of RIS Henry Cooke, Dec 13 2023

  ACT's attempt at regulatory reform in NZ has failed 3 times already – what's different now?    Jane Kelsey,  The Conversation, 24 Dec 2023  (reproduced on RNZ website)
New Zealand guidance
Guide to Cabinet’s Impact Analysis Requirements  (June 2020)     (PDF 871 KB)

This is the latest available guide to the New Zealand RIA process, produced by Treasury within the context of the then Government's requirements for good regulatory practice.    The most recent best practice guide is:

  Best Practice Impact Analysis.  (June 2017)   (PDF 870 KB)

The Treasury also released a guidance note on consultation:
  Effective Consultation for Impact Analysis   (Dec 2019)   (PDF 590 KB)

As of 2024, with the new coalition government planning to establish a Ministry for Regulation, it is likely these guidance documents will be changed in due course.

The following is the last in a series of reports evaluating the RIA process, produced by Castalia, Dec. 2016.

  Regulatory Impact Analysis Evaluation 2016:  Identifying the Factors Which Influence Quality.    Report to The Treasury

From the New Zealand Ministry for Primary Industries, a webpage that encourages policymakers to  "[take]challenges faced by the rural sector into account when designing and implementing policies."  They call this Rural Proofing.

Rural proofing: guidance for policymakers
"New Zealand's rural communities face unique challenges. Find out how to consider the needs of rural communities when developing policies."

Their interactive learning module provides:
  "...a 7-step process for effective rural proofing. The steps include:
  • identifying policy objectives and rural stakeholders
  • analysing the effects on rural communities
  • engaging with rural stakeholders
  • identifying ways to mitigate any negative impacts."
European Commission (EC) guidance

The EC uses the name Impact Assessment (IA) rather than Regulatory Impact Assessment, but in recent years has emphasised the regulatory context again by referring to Better Regulation with its guidance on IA.  It is important top recognise that IA is used by the Commission to evaluate proposed EC policies that will affect EU function across the member nations.  It is distinct from EIA and SEA that member countries are required to use for major projects and plans, respectively.

This is the latest guide for IA from the EC (Nov 2021):    Better Regulation Guidelines    (PDF 664KB)

The following Toolbox (July 2023)  has more detailed information about the nature, context and production of IAs, for staff in EC Directorates.   Lots of "tools" for the various steps in the IA process, as set out by the EC.

Better Regulation Toolbox   (PDF 6.6MB)

Australian guidance
Australian Government Guide to Policy Impact Analysis   March 2023  (PDF 2.4 MB)
"[The Guide] assists in identifying the costs and benefits of policy changes and the cohorts where they would be realised. The Guide encourages policy makers to think about potential impacts early in the policy process." (p.4)

User Guide to the Australian Government Guide to Policy Impact Analysis   May 2023 (PDF 377 KB)
"The Australian Government Guide to Policy Impact Analysis is intended for policy officers and anyone else involved in analysing, developing or implementing policy where options under consideration would have an associated expectation of compliance and result in a more than minor change in behaviour or impact. An important point to remember is that the Impact Analysis is a departmental document." (p. 4)

OECD RIA resources

The most recent OECD guide to Regulatory Impact Assessment is posted on their website:  it can be read online for free, but there is a charge to download the PDF.
There are many other useful publications reports on the main OECD RIA website, dating from the first RIA guide in 1997!


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  • Home
    • Environmental Impact Assessment
    • Social Impact Assessment
    • Strategic Environmental Assessment
    • Community & Stakeholder Engagement
    • Management, Monitoring and Reporting
  • About Us
    • Core Group >
      • Core Group Meeting Minutes
    • Our Partners and Affiliates
    • AGMs
    • Constitution changes 2025
    • Ethics
  • Membership
    • Sign Up for NZAIA Membership (2026 Calendar Year)
    • Membership Subscription Renewal (2026 Calendar Year)
  • Conferences
    • Conference 2024 >
      • Conference Programme 2024
      • Proceedings 2024
    • Proceedings from Past Conferences >
      • Conference 2023 >
        • Pacific Day 2023
        • 2023 Students
      • 2022 - Wellbeing, Sustainability and Impact Assessment: towards more integrated policy-making >
        • Posters
        • 2022 Students
      • 2021 - Social Impact Assessment >
        • Posters
        • 2021 Students
      • 2019 - Climate Change >
        • Posters
        • 2019 Students
        • Conference Photos
        • Contact List
      • 2018 - Regional Development
      • 2016 - Strategic Environmental Assessment
      • 2015 - Where to for Impact Assessment?
      • 2014 - Transport Infrastructure
      • 2013 Fresh Water Management
      • 2012 - Mineral Extraction
    • Sign up for occasional updates from NZAIA
  • Impact Connector
    • Issue #16 SIA for rural resilience and wellbeing >
      • SIA for rural resilience and wellbeing: Intro
      • The drivers and agents of on-farm change in Aotearoa New Zealand
      • Social-ecological assessment for remote and island communities
      • The Impact of Substandard Rural Housing on Resilience and Wellbeing in Te Tai Tokerau
      • Success factors for planning regeneration in rural areas
    • Issue #15 Economic methods and Impact Assessment >
      • Economic methods in impact assessment: an introduction
      • The Nature of Economic Analysis for Resource Management
      • The State-of-the-Art and Prospects: Economic Valuation of Ecosystem Services in Environmental Impact Assessment
      • Economic impact assessment and regional development: reflections on Queensland mining impacts
      • Fonterra’s policy on economic incentives for promoting sustainable farming practices
    • Issue #14 Impact assessment for infrastructure development >
      • Impact assessment for infrastructure development - an introduction
      • Place Matters: The importance of geographic assessment of areas of influence in understanding the social effects of large-scale transport investment in Wellington
      • Unplanned Consequences? New Zealand's experiment with urban (un)planning and infrastructure implications
      • Reflections on infrastructure, Town and Country planning and intimations of SIA in the late 1970s and early 1980s
      • SIA guidance for infrastructure and economic development projects
      • Scoping in impact assessments for infrastructure projects: Reflections on South African experiences
      • Impact Assessment for Pacific Island Infrastructure
    • Issue #13 Health impact assessment: practice issues >
      • Introduction to health impact assessment: practice issues
      • International Health Impact Assessment – a personal view
      • Use of Health Impact Assessment to develop climate change adaptation plans for health
      • An integrated approach to assessing health impacts
      • Assessing the health and social impacts of transport policies and projects
      • Whither HIA in New Zealand….or just wither?
    • Issue #12 Risk Assessment: Case Studies and Approaches >
      • Introduction
      • Risk Assessment and Impact Assessment : A perspective from Victoria, Australia
      • The New and Adaptive Paradigm Needed to Manage Rising Coastal Risks
      • Reflections on Using Risk Assessments in Understanding Climate Change Adaptation Needs in Te Taitokerau Northland
      • Values-Based Impact Assessment and Emergency Management
      • Certainty about Communicating Uncertainty: Assessment of Flood Loss and Damage
      • Improving Understanding of Rockfall Geohazard Risk in New Zealand
      • Normalised New Zealand Natural Disaster Insurance Losses: 1968-2019
      • Houston, We Have a Problem - Seamless Integration of Weather and Climate Forecast for Community Resilience
      • Innovating with Online Data to Understand Risk and Impact in a Data Poor Environment
    • Impact Connector #11 Climate Change Mitigation, Adaptation, and Impact Assessment: views from the Pacific >
      • Introduction
      • Climate change adaptation and mitigation, impact assessment, and decision-making: a Pacific perspective
      • Climate adaptation and impact assessment in the Pacific: overview of SPREP-sponsored presentations
      • Land and Sea: Integrated Assessment of the Temaiku Land and Urban Development Project in Kiribati
      • Strategic Environmental Assessment: Rising to the SDG Challenge
      • Coastal Engineering for Climate Change Resilience in Eastern Tongatapu, Tonga
      • Climate-induced Migration in the Pacific: The Role of New Zealand
    • Impact Connector #10 Climate Change Mitigation and Adaptation >
      • Introduction
      • Is a “just transition” possible for Māori?
      • Adapting to Climate Change on Scale: Addressing the Challenge and Understanding the Impacts of Asia Mega-Cities
      • How responding to climate change might affect health, for better or for worse
      • Kanuka, Kereru and carbon capture - Assessing the effects of a programme taking a fresh look at the hill and high country land resource
      • Wairoa: Community perceptions of increased afforestation
      • Te Kākahu Kahukura Ecological Restoration project: A story within a story
    • Issue #9 Impacts of Covid-19 >
      • Introduction to Impact Connector Issue 9 – Impact assessment and Covid 19
      • Covid-19 fast-track consenting: climate change legacy key to success
      • Tourism – the long haul ahead
      • Making sense of the impact of Covid-19: planning, politics, and the public good
    • Issue #8 Social Impact Assessment >
      • Challenges for Social Impact Assessment in New Zealand: looking backwards and looking forwards
      • Insights from the eighties: early Social Impact Assessment reports on rural community dynamics
      • Impact Assessment and the Capitals Framework: A Systems-based Approach to Understanding and Evaluating Wellbeing
      • Building resilience in Rural Communities – a focus on mobile population groups
      • Assessing the Impacts of a New Cycle Trail: A Fieldnote
      • The challenges of a new biodiversity strategy for social impact assessment (SIA)
      • “Say goodbye to traffic”? The role of SIA in establishing whether ‘air taxis’ are the logical next step in the evolution of transportation
    • Issue #7 Ecological Impact Assessment >
      • The future of Ecological Impact Assessment in New Zealand
      • Ecological impact assessment and roading projects
      • EcIA and the Resource Management Act
      • Professional Practice and implementation of EcIA
      • EcIA in the Marine Environment
    • Issue #6 Landscape Assessment >
      • Introduction
      • Lives and landscapes: who cares, what about, and does it matter?
      • Regional Landscape Inconsistency
      • Landscape management in the new world order
      • Landscape assessment and the Environment Court
      • Natural character assessments and provisions in a coastal environment
      • The Assessment and Management of Amenity
      • The rise of the THIMBY
      • Landscape - Is there a common understanding of the Common?
    • Issue #5 Cultural Impact Assessment >
      • Introduction
      • Potential of Cultural Impact Assessment
      • The Mitigation Dilemma
      • CIA and decision-making
      • Insights and observations on CIA
      • Achieving sustainability through CIA
      • CIA - Enhancing or diminishing mauri?
      • Strategic Indigenous Impact Assessment?
    • Issue #4 Marine Environment >
      • Introduction
      • Iwi, Impact Assessment and Marine Environment
      • Sea-Bed Mining Application in Taranaki
      • The wreck of the MV Rena
      • High Court RMA Controls on Fishing
      • Initiatives in the Pacific Islands
      • SEA in an NZ context
    • Issue #3 Strategic Environmental Assessment
    • Issue #2
    • Issue #1
  • Resources
    • Webinars
    • IAIA Resources
    • United Nations Guidance
    • Donors Guidelines and Principles
    • Oceania and the Pacific
    • Natural Systems >
      • Biodiversity & Ecosystem Services
      • Agriculture & Food Systems
      • Water Management
    • Social Impact Assessment
    • Health Impact Assessment >
      • Climate Change & Health
      • Air Quality Impact Assessment
    • Cumulative Impact Assessment
    • Community and Stakeholder Engagement
    • Indigenous Peoples
    • Climate Change and Disaster Risk Resilience >
      • Adaptation Planning
      • Nature-based Solutions
    • Urban Development
    • Sustainable Development Goals
    • Strategic Environmental Assessment
    • Regulatory Impact Assessment
    • Methods in Impact Assessment
  • Community
    • Membership Directory
    • News
    • Policy Submissions >
      • Submissions
  • 2026 Calendar Year Membership Subscription Renewal