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Reasonable Assurance

What is Reasonable Assurance?

A high but not absolute level of assurance that the subject matter is free from material misstatement, the standard for financial and compliance audits.

Audit and Assurance

Each of these is named in at least one of the same controls as reasonable assurance. The number is how many controls name both.

What the standards actually require on reasonable assurance

Requirements naming reasonable assurance across 6 standards, quoted from the control text.

The risk management framework must provide reasonable assurance that each material risk to business operations is being prudently and soundly managed, having regard to the size, business mix and complexity of those operations.

SPS220-P15 · Reasonable Assurance of Prudent and Sound Management
GHG Protocol2 controls

GHG Protocol data quality + verification + disclosure. DATA QUALITY: 5 dimensions per GHG Protocol Scope 3 Standard - (1) TECHNOLOGY representativeness; (2) TEMPORAL representativeness; (3) GEOGRAPHICAL representativeness; (4) COMPLETENESS;

GHG-DataQuality-Verification-Disclosure · Data Quality, Uncertainty, External Verification and Public Disclosure
GRI Standards2 controls

GRI Standards Foundation + modular system + accordance. GRI 1: FOUNDATION 2021 establishes the foundational concepts + reporting principles + accordance system underlying all GRI reporting.

GRI-Foundation-Modular-Accordance · GRI Standards Foundation, Modular System, GRI 1 Reporting Principles and Accordance Statement

Per SEC Climate Rule: attestation. Requirements include (a) attestation of GHG emissions disclosure at limited + then reasonable assurance level + (b) qualified attestation provider + (c) maintain attestation documentation + (d) integrate with broader assuranc...

SECCLIM-5 · Attestation and Assurance

Issuers must devise and maintain a system of internal accounting controls sufficient to provide reasonable assurances.

15 U.S.C. § 78m(b)(2)(B) · Internal Accounting Controls
CSRD1 control

Sustainability reporting must be subject to assurance, beginning with limited assurance and moving towards reasonable assurance once standards are adopted; the assurance is provided by a statutory auditor or an independent assurance services provider.

CSRD-ASSURANCE · Assurance over the sustainability statement

Questions people ask about reasonable assurance

What is Reasonable Assurance?
A high but not absolute level of assurance that the subject matter is free from material misstatement, the standard for financial and compliance audits.
Why is Reasonable Assurance important for compliance?
Reasonable Assurance is a key concept in Audit and Assurance. Understanding reasonable assurance helps organizations meet regulatory requirements, reduce risk, and demonstrate due diligence during audits. Our compliance platform maps 686 frameworks with 311K cross-framework control mappings.
Which compliance frameworks address Reasonable Assurance?
Reasonable Assurance appears in the requirement text of APRA SPS 220 Risk Management (Superannuation), GHG Protocol, GRI Standards, SEC Climate Disclosure Rule, US Foreign Corrupt Practices Act (FCPA). Across these standards we have identified 10 controls that name it directly, each linked to the control text on the compliance platform.
Where can I learn more about Reasonable Assurance?
Explore our compliance framework pages to see how reasonable assurance applies across different standards and regulations. Our implementation guides provide step-by-step guidance, and the compliance platform offers AI-powered analysis of how this concept maps across 686 frameworks.

See how Reasonable Assurance applies across compliance frameworks

Our platform maps 686 frameworks with 311K cross-framework control mappings. Explore how this concept is addressed across standards.

Written and maintained by Gerard Blokdyk, The Art of Service.