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Assurance mapping: a vital governance and management tool

Helpsheets and support

Published: 19 Sep 2018 Reviewed: 19 Sep 2018 Update History

Assurance maps can be a powerful tool providing great insights for boards, senior management and audit committees. By allowing the decision-makers to take appropriate comfort from the assurance provided, these maps maximise the value of that assurance for the whole organisation. Here the Audit and Assurance Faculty explores the concept of assurance maps and the benefits to various stakeholders.

From risk management to assurance

Many organisations of all sizes invest heavily in risk management. The benefits of identifying and managing strategic and operational risks, within the boundaries of the organisation’s risk appetite, are widely recognised.

For a small start-up this may be as simple as investing executive time in assessing and weighing the risks. Larger organisations often implement Enterprise Risk Management systems to expand the reach of their risk assessment and control. Boards, management executive groups and audit committees receive regular risk reports which set out the key controls and mitigations strategies in place to manage these risks along with additional mitigations proposed to bring the risks to level compatible with their risk appetite.

When sound risk management practices are in place a key question is for all organisations is: How do we get assurance regarding the effectiveness of these controls and mitigations?  

Assurance can of course come from a variety of sources, and the number and complexity of these also changes as an organisation grows. Boards and senior management can be overwhelmed by the number of reports from different sources providing assurance over different aspects of risks and issues leading them to think that associated risks are being controlled effectively when they may, in fact, not be. This is because the assurances are frequently not well coordinated, and there can be gaps and cracks, as well as overlaps. Even worse, some of the assurances may not match well against the underlying risk leading to inappropriate reliance.

As technology allows organisations to monitor risks and develop controls in increasingly sophisticated ways, the job of getting the right assurance in the right place must also become more sophisticated.

Assurance maps are designed to help businesses overcome these weaknesses and can create considerable value for the organisation.

What is an assurance map

Assurance is an objective examination of evidence for the purpose of providing an independent assessment on governance, risk management and control processes for the organisation. An assurance map is a structured means of identifying and mapping the main sources and types of assurance in an organisation across the four lines of defence, and coordinating them to best effect.

In a smaller or less complicated organisation, a full assurance map will not be needed. However, the same principles apply and the assurance mapping approach can still be a useful guide for thinking through the connection between risk management and assurance.

While good risk management practices will help an organisation to identify and focus well on its major risks, good governance also requires effective management and mitigation of those risks. An effective and efficient framework is needed to give sufficient, continuous and reliable evidence of assurance on organisational stewardship and the management of the major risks to organisational success and delivery of improved, cost effective services. An assurance map is the tool that enables this evidence to be assembled. It also provides the evidence that may be needed to support:

  • management confidence in their assertions;
  • audit committee assurances to the board on the state of internal controls; and
  • public statements by the board as to the state of internal control.

An assurance map shows:

  • Key elements over which assurance is required. This will change depending on the type and size of organisation.
  • The 'four lines of defence'. The details of who provides what can vary for each organisation.
  • Any gaps where no assurance is provided.
  • Further useful information can be added to enhance the example given, such as the quality of assurance provider and the outcome of the assurance.

An example of a simple assurance map

An example of a simple assurance map

Preparing your assurance map

An assurance map can provide a basis on which to communicate with stakeholders and begin quality conversations. This is because there are benefits for each of the groups (or the four lines of defence) that may make use of the map. Together they should enable the board to make more reliable and robust reports to its stakeholders about the organisation’s state of internal control.

The benefits of assurance maps for each group are set out in the presentation designed to promote the concept to senior management.

Without an assurance map it is unlikely that the audit and risk committee will have access to a sufficiently well-structured analysis or assurance to enable them to evidence, safely, their satisfaction with the state of internal control.

At the very least the assurance map will enable the members of the committee to focus on those specific areas that remain a concern.

With an assurance map, the board will have evidence to support its assertions as to the state of internal control in any public reports and as communicated to the external auditors and shareholders.

With a map, the assurance-related work of the individuals operating within the four lines of defence can be best directed to avoid overlaps.

10 steps to prepare your assurance map

To support the creation of useful and relevant assurance maps, we have idenfitied 10 key steps to follow: 

  1. Identify your sponsor
  2. Determine your scope
  3. Assess the required/desired amount of assurance for each element
  4. Identify your assurance providers
  5. Identify your assurance activities
  6. Reassess your scope
  7. Assess the quality of your assurance activities
  8. Assess the aggregate actual amounts of assurance for each element
  9. Analyse the gaps and overlaps in assurance for each element
  10. Determine your course of action

Maintenance and reassessment

An assurance map is a live document that should be constantly reassessed and updated. At a minimum, it should be reassessed and approved annually, following the 10 steps to determine if there are new or changed elements, assurance providers or assurance activities. The desired or required amounts of assurance may also change for a variety of reasons, which would also lead to a new assessment of the map and updated action plan.

 Failure to embed the maintenance process in your organisation will waste much of the effort committed in creating the Map for the first time. Accordingly, the embedding process should start during the preparation of the assurance map itself.

Download a template assurance map

Get started on following the 10 steps and preparing an assurance map for your organisation, by downloading a template assurance map.

Further resources

Assurance guidance

Template assurance map

XLSX (23kb)

Get started on following the 10 steps and preparing an assurance map for your organisation, by downloading a template assurance map.

ICAEW's assurance resource

This page is part of ICAEW’s online assurance resource, which replaces the Assurance Sourcebook.

Changelog Anchor
  • Update History
    19 Sep 2018 (09: 00 AM BST)
    Page first published
    18 Sep 2019 (12: 30 AM BST)
    Page reviewed (due to be reviewed September 2019)
    01 May 2024 (12: 00 AM BST)
    Changed to new template (no textual changes)