Advanced Auditing, Assurance and Professional Ethics · General Auditing Principles and Auditors Responsibilities

Professional Judgment in an Audit (SA 200, A26)

Updated 5 October 2026 · Fact-checked

Professional judgment is the auditor's application of relevant training, knowledge and experience, within the context of auditing, accounting and ethical standards, to make informed decisions about the appropriate course of action in the audit. To answer questions, state the meaning, show where it is used, explain documentation, and note its limits.

Understand Professional Judgment in an Audit

An audit cannot be run by a checklist. Standards tell you what to achieve, but they cannot cover every client, every risk or every transaction. So the auditor must decide things: how much evidence is enough, which risks matter, and whether an estimate is reasonable. Making those decisions well is professional judgment.

SA 200 describes it as the application of relevant training, knowledge and experience, within the context provided by auditing, accounting and ethical standards, in making informed decisions about the courses of action that are appropriate in the circumstances of the audit engagement.

SA 200 says professional judgment is essential to the proper conduct of an audit. Without the relevant knowledge and experience, the auditor cannot interpret the ethical requirements and the standards, or make informed decisions in the circumstances. It is needed especially in these areas:

Materiality and audit risk.
The nature, timing and extent of audit procedures to meet the SA requirements and gather audit evidence.
Evaluating whether sufficient appropriate audit evidence has been obtained, and whether more needs to be done.
Evaluating management's judgments in applying the entity's applicable financial reporting framework.
Drawing conclusions from the audit evidence, for example judging the reasonableness of management's estimates.

The key distinction is that judgment must be exercised on the facts, and it must be defensible. It is not a licence for personal preference. It cannot be used to justify decisions that are not supported by the facts and circumstances of the engagement or by sufficient appropriate audit evidence. It also has to be documented so that an experienced auditor with no previous connection to the engagement can understand it. SA 230 links to this requirement.

A related point: the distinction between professional judgment and professional skepticism. Skepticism is an attitude (questioning mind, alert to conditions that may indicate misstatement). Judgment is the decision-making that you apply with that attitude.

Key rules to remember

Definition of professional judgment: Professional judgment = training + knowledge + experience, applied within auditing, accounting and ethical standards, to make informed decisions on appropriate action; Use these elements in your opening line. Add 'in the circumstances of the audit engagement'.
Areas needing judgment: Materiality and audit risk | nature, timing, extent of procedures | sufficiency and appropriateness of evidence | management's judgments | conclusions such as reasonableness of estimates; Five areas. Write them as bullet points and give a one-line example for each.
Limit on judgment: Judgment ≠ justification for decisions not supported by facts, circumstances or sufficient appropriate audit evidence; Always state this limit. It is a frequent exam point.
Documentation test: Documentation must enable an experienced auditor, with no previous connection to the audit, to understand significant matters and the judgments made; Comes from SA 230. Document the reasoning for significant judgments, not only the conclusion.

How to solve Professional Judgment in an Audit questions

Use this method for theory questions and case-scenario questions on professional judgment.

1Define professional judgment in one sentence using training, knowledge, experience, standards and informed decisions.
2State why it is essential: standards cannot prescribe every situation, and the auditor must interpret them and the ethics requirements.
3Identify the area in the case where judgment is used: materiality, risk, procedures, evidence, management's judgments or conclusions.
4Apply it to the facts. Name the specific decision the auditor made and what factors support it.
5Test it against the limit: is the decision supported by the facts and by sufficient appropriate audit evidence?
6State the documentation: the reasoning for significant judgments must be recorded so an experienced auditor can understand it.
7Conclude with whether the judgment was reasonable and what the auditor should do if not (obtain more evidence, consult, revise).

Quickest way: D-A-L-D: Define, Areas, Limit, Document

When to use it: Use when time is short, for a 4 to 6 mark theory question or a short MCQ-linked case.

D: one-line definition.
A: list the relevant areas of judgment with a short example for each.
L: state the limit. Judgment must rest on facts and sufficient appropriate evidence.
D: state documentation so an experienced auditor can follow the reasoning.
If a case is given, add one line applying these to the facts.

Common mistakes in Professional Judgment in an Audit

Treating professional judgment as the same as professional skepticism.
Both words appear together in SA 200 and feel similar.
Fix: Skepticism is an attitude of questioning and alertness. Judgment is the informed decision-making. Write them separately.
Saying judgment lets the auditor override evidence or a standard.
Students think 'judgment' means 'freedom'.
Fix: State that judgment operates within the standards and cannot justify decisions unsupported by facts and sufficient appropriate evidence.
Listing only materiality as the area of judgment.
Materiality is the most familiar example.
Fix: Cover all areas: audit risk, procedures, evidence sufficiency, management's judgments and conclusions on estimates.
Documenting only the conclusion and not the reasoning.
Students think the working paper is a record of results.
Fix: Say the reasoning behind significant judgments is documented so an experienced auditor with no connection to the audit understands it.
Ignoring the entity's circumstances in a case answer.
Students give a generic textbook answer.
Fix: Use the facts given: size, complexity, risk and past errors, then show how they shaped the decision.

Worked examples

Example 1

During the audit of Meru Textiles Ltd, the auditor decides to test a larger sample of inventory items at a godown that had many count differences last year. The engagement partner says this is just personal preference. Explain whether this is an exercise of professional judgment under SA 200.

Show the solution

Meaning: professional judgment is applying training, knowledge and experience, within auditing, accounting and ethical standards, to make informed decisions in the circumstances of the engagement.
Area: the decision concerns the nature, timing and extent of audit procedures, which SA 200 lists as an area needing judgment.
Facts: the godown had many count differences last year, which indicates higher risk of misstatement. A larger sample responds to that risk.
Limit: the decision is supported by facts and aims to obtain sufficient appropriate audit evidence, so it is not mere preference.
Documentation: the auditor should record the risk factors and the reason for the larger sample so an experienced auditor with no previous connection to the audit can understand it.

Answer: Yes. The decision is an exercise of professional judgment because it is an informed choice about the extent of procedures, based on facts (prior count differences) and aimed at sufficient appropriate evidence. The reasoning should be documented.

Example 2

An auditor accepts management's estimate of a provision for warranty claims without testing the data, saying 'in my professional judgment it is reasonable'. No working paper records the basis. Comment.

Show the solution

Area: evaluating the reasonableness of management's estimates is a conclusion that requires professional judgment.
Limit: professional judgment cannot be used to justify a decision that is not supported by the facts and circumstances or by sufficient appropriate audit evidence.
Application: the auditor did not test the data, so there is no evidence on which the judgment is based. The statement is an assertion, not a judgment.
Documentation: no working paper records the basis. An experienced auditor with no connection to the audit could not understand the reasoning, so the documentation requirement is not met.
Action: the auditor should obtain evidence on the estimate, such as past claims experience and the method used, and record the reasoning.

Answer: The auditor has not exercised valid professional judgment. The conclusion is unsupported by sufficient appropriate audit evidence and undocumented. The auditor must obtain evidence on the estimate and document the basis of the judgment.

Exam tips

In theory answers, always include the SA 200 definition and the areas of judgment. Examiners look for these keywords.
In case scenarios, name the exact area of judgment (for example, extent of procedures) and tie it to a fact in the case.
Always add the limit: judgment must be supported by facts and sufficient appropriate evidence.
Mention documentation in every answer. It is an easy mark that students miss.
For MCQs, watch for options that say judgment replaces evidence or standards. These are wrong.

Practice questions from General Auditing Principles and Auditors Responsibilities

Professional Judgment in an Audit: frequently asked questions

What is professional judgment under SA 200?

It is the application of relevant training, knowledge and experience, within the context of auditing, accounting and ethical standards, to make informed decisions about appropriate courses of action in the audit engagement. SA 200 says it is essential to the proper conduct of an audit.

Where does the auditor use professional judgment?

The auditor uses it for materiality and audit risk, the nature, timing and extent of procedures, evaluating whether enough appropriate evidence is obtained, evaluating management's judgments, and drawing conclusions such as the reasonableness of estimates.

Does professional judgment need to be documented?

Yes. Documentation should let an experienced auditor with no previous connection to the audit understand the significant matters and the judgments made. Record the reasoning, not only the conclusion.

What are the limits of professional judgment?

It must operate within the standards and ethical requirements. It cannot justify decisions that are not supported by the facts and circumstances of the engagement or by sufficient appropriate audit evidence.