CORAA

SA 320Materiality in Planning and Performing an Audit

Issued by ICAI AASB · Planning

Setting overall materiality, performance materiality, and the threshold for clearly trivial misstatements.

Objective

To apply the concept of materiality appropriately in planning and performing the audit.

Key requirements

  • Overall materiality: benchmark + percentage (PBT 5%, turnover 0.5-1%, equity 1-3% — choose appropriate)
  • Performance materiality: 50-75% of overall materiality (lower for higher risk)
  • Clearly trivial threshold: 3-5% of overall materiality
  • Specific materiality for particular classes of transactions, account balances or disclosures
  • Revision of materiality as the audit progresses if circumstances change

Typical procedures

  • Materiality memorandum signed before fieldwork
  • Documented rationale for the chosen benchmark
  • Update on the materiality assumption based on actual results

Common pitfalls

  • PBT used as benchmark in a loss-making year without alternative consideration
  • Performance materiality not actually lower than overall — defeating the purpose
  • No specific materiality for related-party transactions despite Section 188 disclosure thresholds
On CORAA
ICAI band-based materiality, three-step memo, locked before fieldwork. Becomes a documented artefact in the working paper. Open the matching module →

SA 320 in practice

SA 320 sits in the Planning phase of the audit. The Standards on Auditing are issued by the ICAI Auditing and Assurance Standards Board (AASB) and deemed to be prescribed by the Central Government under Section 143(10) of the Companies Act 2013. Compliance with SAs is mandatory for every audit conducted by a Chartered Accountant in India.

For authoritative text, refer to the ICAI AASB Compendium of Standards on Auditing at icai.org.

Free downloads · Working formats for SA 320

Take the working versions with you

Editable, letterhead-ready formats that put SA 320 into practice — built from the ICAI working-paper set, free to download.

Note on MaterialityMateriality calculator (SA 320)

And when you want SA 320 executed and documented automatically — your first audit on CORAA is free.

SA 320 — frequently asked

What is SA 320 (Materiality in Planning and Performing an Audit)?

SA 320 — Materiality in Planning and Performing an Audit — is a Standard on Auditing issued by the ICAI Auditing and Assurance Standards Board. Setting overall materiality, performance materiality, and the threshold for clearly trivial misstatements. To apply the concept of materiality appropriately in planning and performing the audit.

Is SA 320 mandatory in India?

Yes. Standards on Auditing are deemed to be prescribed under Section 143(10) of the Companies Act 2013, and ICAI members must comply with them in every audit of historical financial information. Non-compliance must be justified and can attract professional consequences in peer review, NFRA inspection, and disciplinary proceedings.

What should the working papers show for SA 320?

Documentation sufficient for an experienced auditor with no previous connection to the audit to understand what was done and why (SA 230). For SA 320 in the planning phase, that means evidencing: Overall materiality: benchmark + percentage (PBT 5%, turnover 0.5-1%, equity 1-3% — choose appropriate); Performance materiality: 50-75% of overall materiality (lower for higher risk); Clearly trivial threshold: 3-5% of overall materiality.

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SA 315Identifying and Assessing Risks of Material Misstatement
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SA 330The Auditor's Responses to Assessed Risks