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Say Hello to the New Assurance and Ethics Standards for 2026!

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The international assurance and ethics landscape is undergoing its most comprehensive structural overhaul in decades. From dedicated standards for Less Complex Entities to global ESG assurance frameworks and revised fraud obligations, practitioners and finance teams must adapt early to maintain audit readiness.

1. ISA for LCE (International Standard on Auditing for Less Complex Entities)

Effective Date: Audits of financial statements for periods beginning on or after December 15, 2025.

ISA for LCE Overview Infographic
Standard Breakdown: ISA for Less Complex Entities (LCE)

Key Provisions:

  • A Standalone Standard: This is not a summarized version of the ISAs; it is an entirely separate, self-contained standard designed specifically to eliminate disproportionate administrative burdens on auditors of non-complex entities.
  • Proportionality: It removes requirements irrelevant to non-complex businesses, such as complex group audit mechanisms or intricate automated internal control evaluations when not applicable.
  • Strict Prohibitions: It cannot be applied to Listed Entities (publicly traded companies) or entities possessing significant public interest characteristics.
  • The Transition Pathway: Designed with a structured growth pathway, permitting auditors to transition back into full ISAs if the client’s operational or corporate complexity increases.

2. ISSA 5000 (General Requirements for Sustainability Assurance Engagements)

Effective Date: Assurance engagements for sustainability reports for periods beginning on or after December 15, 2026.

ISSA 5000 Sustainability Assurance Overview Infographic
Standard Breakdown: ISSA 5000 Sustainability Assurance Engagements

Key Provisions:

  • Framework Neutrality: Acts as the global baseline, functioning seamlessly regardless of which reporting framework the client implements (e.g., IFRS S1/S2, GRI, SASB).
  • Double Materiality: Purpose-built to accommodate double materiality—evaluating both the financial impact of ESG factors on enterprise value and the entity’s external impact on environment and society.
  • Universal Scope: Governs all assurance practitioners, including multidisciplinary experts and non-accountants (such as environmental scientists or engineers), ensuring consistency.
  • Work Effort Clarity: Clearly defines and distinguishes the procedural effort and evidentiary thresholds required for "Limited Assurance" versus "Reasonable Assurance."

3. ISA 570 (Revised 2024): Going Concern

Effective Date: Audits of financial statements for periods beginning on or after December 15, 2026.

ISA 570 Revised Going Concern Overview Infographic
Standard Breakdown: ISA 570 (Revised 2024) Going Concern

Key Provisions:

  • Extended Horizon: The auditor is now obligated to evaluate management’s going concern assessment for at least 12 months from the date of approval of the financial statements, closing the vulnerability where auditors previously looked only 12 months from balance sheet date.
  • Evidence Over Inquiry: Demands robust substantive corroboration to test management’s future turnaround or operational plans. Passive inquiry alone is no longer sufficient; auditors must obtain hard evidence backing feasibility.
  • Transparent Reporting: Mandates a clear, positive statement in the independent auditor’s report on the appropriateness of management’s use of the going concern basis, even when no material uncertainty exists.

4. ISA 240 (Revised): The Auditor’s Responsibilities Relating to Fraud

Effective Date: Audits of financial statements for periods beginning on or after December 15, 2026.

ISA 240 Revised Fraud Responsibilities Infographic
Standard Breakdown: ISA 240 (Revised) Auditor Responsibilities Relating to Fraud

Key Provisions:

  • Closing the Expectation Gap: Explicitly sharpens the auditor’s affirmative responsibility to identify material fraud risks, directly challenging passive assumptions of management honesty.
  • Digital Evidence Authentication: Imposes new procedures addressing the authenticity of electronic records and digital workflows, requiring auditors to account for digital document alteration risks.
  • Prescriptive Journal Entry Testing: Introduces strict, standardized requirements for testing manual journal entries and management overrides of internal controls.

5. IESSA (Ethics for Sustainability Assurance) & Use of Experts

Effective Date: Periods beginning on or after December 15, 2026.

IESSA Ethics Standards Overview Infographic
Standard Breakdown: IESSA International Ethics Standards for Sustainability Assurance

Key Provisions:

  • Unified Ethics: Establishes a rigorous ethics and independence framework applying equally to accountant and non-accountant sustainability practitioners.
  • Value Chain Complexity: Directly tackles the independence and confidentiality challenges of assuring data originating outside client walls (such as Scope 3 supplier carbon emissions).
  • Evaluating External Experts: Significantly tightens requirements for verifying the objectivity, competence, and methodology of external technical specialists before their findings qualify as audit evidence.

6. Strategic Implementation Roadmap (2025–2027)

2025-2027 Auditing Standards Roadmap Timeline
Implementation Roadmap: 2025 to 2027 Standards Transition
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