CORAA

SA 530Audit Sampling

Issued by ICAI AASB · Audit Evidence

Statistical and non-statistical sampling — selection, evaluation, projection of misstatements.

Objective

To provide a reasonable basis for the auditor to draw conclusions about the population from which the sample is selected.

Key requirements

  • Sample design considering audit objective, characteristics of population
  • Sample size sufficient to reduce sampling risk to an acceptably low level
  • Selection of items in a way that each sampling unit in the population has a chance of selection
  • Performance of audit procedures on each selected item
  • Projection of misstatements found in the sample to the population
  • Evaluation of sampling risk in forming the conclusion

Typical procedures

  • Monetary Unit Sampling (MUS) for balance-sheet substantive testing
  • Attribute sampling for tests of controls
  • Variable sampling for substantive procedures

Common pitfalls

  • Sample size determined by partner's gut feel rather than risk-based math
  • Misstatements found but not projected to the population
  • Tolerable misstatement not linked to performance materiality
On CORAA
Sample size = ceil((CF × Pop) / PM). Formula shown and seed printed per working paper for reproducibility — the SA 530 file an experienced reviewer can defend. Open the matching module →

SA 530 in practice

SA 530 sits in the Audit Evidence 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 530

Take the working versions with you

Editable, letterhead-ready formats that put SA 530 into practice — built from the ICAI working-paper set, free to download.

Auditor's Report FormatAudit sampling calculator (SA 530)

And when you want SA 530 executed and documented automatically — your first audit on CORAA is free.

SA 530 — frequently asked

What is SA 530 (Audit Sampling)?

SA 530 — Audit Sampling — is a Standard on Auditing issued by the ICAI Auditing and Assurance Standards Board. Statistical and non-statistical sampling — selection, evaluation, projection of misstatements. To provide a reasonable basis for the auditor to draw conclusions about the population from which the sample is selected.

Is SA 530 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 530?

Documentation sufficient for an experienced auditor with no previous connection to the audit to understand what was done and why (SA 230). For SA 530 in the audit evidence phase, that means evidencing: Sample design considering audit objective, characteristics of population; Sample size sufficient to reduce sampling risk to an acceptably low level; Selection of items in a way that each sampling unit in the population has a chance of selection.

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