SA 300 — Planning an Audit of Financial Statements — CA Inter Microlesson

Think of SA 300 as the blueprint phase before construction begins. Just like a builder doesn't start laying bricks without a plan, an auditor must plan the audit before touching a single voucher. SA 300 makes this planning mandatory — and it's not just a formality. Good planning means fewer surprises, better use of team time, and a higher-quality audit.

Planning under SA 300 has two main outputs: the Overall Audit Strategy and the Audit Plan. Don't mix them up — this distinction is a favourite exam trap. The Overall Audit Strategy is the big-picture document: it sets the scope (which companies, which periods, which financial statements), timing (interim vs. final audit), and direction (which areas need more attention). Think of it as the architect's site plan. The Audit Plan, on the other hand, is the detailed, on-ground schedule — it translates the strategy into specific nature, timing, and extent (NTE) of audit procedures for each area. It's the day-by-day construction schedule.

SA 300 also requires preliminary engagement activities before proper planning even starts. This includes three things: (1) checking that the firm can accept or continue the engagement — ethical requirements, independence, competence; (2) ensuring the terms of engagement are agreed (covered by SA 210); and (3) considering whether the previous year's closing balances are correct (relevant for initial audits). Once these are cleared, the senior team — including the Engagement Partner — must be involved in planning right from the start. SA 300 is clear: planning is not just for the juniors to handle. The partner's early involvement shapes risk assessment, resource allocation, and the overall tone.

Finally, planning is not a one-time event. As the audit progresses and new facts emerge, the auditor must revise the overall audit strategy and audit plan accordingly. This iterative nature is tested frequently — students assume planning ends once the fieldwork starts. It doesn't. Also remember: documentation of the audit strategy and audit plan is mandatory under SA 300 — the auditor must retain both as part of the audit file.

📊 Worked example

Example 1: Identifying What Goes in Strategy vs. Plan

Setup: CA Meera is the engagement partner for the statutory audit of Rajesh & Co. Pvt. Ltd. (turnover ₹42 crores). She is allocating audit work before the fieldwork begins.

Question: Classify the following into Overall Audit Strategy or Audit Plan:

(a) The audit will cover F.Y. 2024-25 standalone financial statements.

(b) Debtors above ₹5,00,000 will be confirmed by circularisation.

(d) Bank reconciliation for all 6 accounts will be verified for March 2025.

Working:

(a) → Overall Audit Strategy — defines scope (which period, which statements)
(b) → Audit Plan — specific procedure (circularisation) with a threshold (₹5 lakh)
(c) → Overall Audit Strategy — resource allocation is part of strategy
(d) → Audit Plan — specific NTE: nature (verification), timing (March 2025), extent (all 6 accounts)

Answer: (a) and (c) → Strategy; (b) and (d) → Audit Plan.

---

Example 2: Revision of Audit Plan Mid-Audit

Setup: During interim audit of Sharma Exports Ltd. (₹18 crores revenue), the audit team discovers the internal control over inventory is weaker than expected — the client has no bin cards and physical verification hasn't happened in 18 months.

Question: What should the auditor do under SA 300?

Working:

Original plan assumed moderate reliance on internal controls for inventory → fewer substantive procedures planned.
New fact: controls are weak → risk of material misstatement increases.
SA 300 requires the auditor to revise the audit plan to increase the extent of substantive procedures for inventory (e.g., attend physical count, verify purchase invoices above ₹50,000, check GRN-to-invoice matching).
The engagement partner must be informed; revision must be documented.

Final Answer: The audit plan must be revised — extend inventory substantive procedures. Document the revision and the reason.

⚠️ Common exam mistakes

Treating Overall Audit Strategy and Audit Plan as the same thing. They are two separate documents with different levels of detail. Strategy = big picture (scope, timing, resources, direction). Plan = specific procedures (NTE for each assertion/area). In a 4-mark or 6-mark question, always distinguish them clearly.
Thinking planning is only done before fieldwork and never revisited. SA 300 explicitly says the audit strategy and plan must be updated as the audit progresses. If a new risk emerges during fieldwork, planning must be revised — don't write 'planning is complete at this stage' in your answer.
Forgetting the Engagement Partner's role in planning. Students often write that planning is done by the audit team or seniors. SA 300 requires the engagement partner to be involved in planning — especially in directing and supervising the overall approach.
Skipping preliminary engagement activities in answers. When a question asks about SA 300, students jump straight to audit strategy. Always mention the preliminary activities first: independence check, continuance decision, and agreeing engagement terms.
Ignoring documentation as a requirement. SA 300 mandates that both the overall audit strategy and the audit plan be documented. In theory answers, always end with a line on documentation — examiners specifically look for it.

📖 Reference: SA 300 — Institute of Chartered Accountants of India

SA 315

Test yourself

Practice questions on this section, AI-graded with citations.

⚡ Practice now →