SQC 1 Quality Control explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
SQC 1 tells an audit firm what it must build so that every audit it signs is done to professional standards. This first part covers the system itself, the leadership of the firm, ethics and independence, and the decision to accept or keep a client.
SQC 1, as effective for engagements relating to accounting periods beginning on or after 1 April 2008 (recommendatory) and 1 April 2009 (mandatory), is the quality standard that applies today. ICAI may revise standards, so check icai.org for the current text.
SQC 1 requires every firm to run a documented system of quality control with six elements: leadership, ethics, acceptance and continuance, human resources, engagement performance and monitoring. It applies to all firms, large or small. SQM 1 and SQM 2 are recommendatory, because ICAI deferred their mandatory date on 31 March 2026, so SQC 1 still applies. This part covers the first three elements; part 2 covers the rest.
What SQC 1 covers and who must follow it
Paragraph 1 says the standard sets out a firm's responsibilities for its system of quality control for audits, reviews of historical financial information and other assurance and related services. It is read with the Chartered Accountants Act, 1949 and the Code of Ethics. Paragraph 5 says it applies to all firms, whether a sole practitioner or a large network, but the policies a firm adopts depend on its size, its operations and whether it is part of a network.
The aim in paragraph 3 is reasonable assurance that the firm and its people follow professional standards and legal requirements, and that reports signed by the firm or the engagement partner are suitable in the circumstances. Reasonable assurance here means a high, but not absolute, level of assurance. SA 220 handles the same subject at the level of a single audit; see SA 220 and the engagement partner.
SQC 1 footnote 2 clarifies that in India reports are signed by the sole practitioner, proprietor or partner in his or her own name on behalf of the firm. That is why the engagement partner is a member of ICAI in full-time practice.
Key terms in plain words
| Term (paragraph 6) | What it means in practice |
|---|---|
| Engagement partner | The ICAI member in full-time practice who is responsible for the engagement, its performance and the report |
| Engagement quality control reviewer | A suitably qualified person, inside or outside the firm, who objectively evaluates the team's significant judgments before the report is issued; a review team must be headed by an ICAI member |
| Firm | A sole practitioner, partnership or other entity of professional accountants permitted by law |
| Listed entity | An entity whose shares, stock or debt are quoted or listed on a recognised stock exchange |
| Network | A larger structure aimed at cooperation and at profit or cost sharing, or sharing ownership, control, quality policies, strategy or brand |
| Reasonable assurance | A high, but not absolute, level of assurance |
The six elements and the duty to document them
Paragraph 7 lists the elements: leadership responsibilities, ethical requirements, acceptance and continuance of client relationships and engagements, human resources, engagement performance and monitoring. Paragraph 8 adds that the policies must be documented and communicated to all personnel, with the message that every individual is personally responsible for quality. Firms are also expected to encourage staff to raise views or concerns about quality.
Leadership responsibilities (paragraphs 9-13)
The firm must promote a culture in which quality is essential. The chief executive, or the managing partners, take ultimate responsibility for the system. The application text in paragraph 11 makes three points that matter for small firms too:
- management responsibilities are assigned so that commercial considerations do not override quality;
- appraisal, pay and promotion policies show a commitment to quality; and
- the firm spends enough resources on developing and supporting its quality policies.
Whoever runs the system day to day needs enough experience, ability and authority to do so (paragraph 12). In a small firm, that is often the senior partner, and the point is that someone is named and has authority.
Ethical requirements (paragraphs 14-17)
The firm needs policies that give reasonable assurance that it and its people comply with the Code of Ethics. Paragraph 15 names the five fundamental principles: integrity, objectivity, professional competence and due care, confidentiality and professional behaviour. The firm reinforces them through leadership, training, monitoring and a process for dealing with non-compliance.
Independence (paragraphs 18-27)
Independence is dealt with separately because it matters so much for assurance work. The firm's policies must let it do the following.
- Tell personnel, and others covered such as experts contracted by the firm and network firm personnel, what independence requires.
- Identify and evaluate threats, then remove them or reduce them to an acceptable level with safeguards, or withdraw from the engagement (paragraph 18).
- Require engagement partners to share information on client engagements, including services provided, so the firm can judge the effect on independence (paragraph 19).
- Make sure the firm is told of breaches promptly and can act on them (paragraph 20).
- Obtain written confirmation of compliance with independence policies at least once a year from everyone required to be independent (paragraph 23). The confirmation can be on paper or electronic.
For company audits, the eligibility and non-audit-services limits in the Companies Act sit alongside this; see our posts on section 141 eligibility of the auditor and section 144 non-audit services.
Familiarity threat and rotation
Using the same senior people on an assurance engagement for a long time can create a familiarity threat. Paragraph 25 asks every firm to set criteria for when safeguards are needed. For audits of listed entities, paragraph 27 says the engagement partner should be rotated after a pre-defined period, "normally not more than seven years". Footnote 6 says rotation does not apply where a sole practitioner audits the listed entity, but that practice unit must be reviewed under the peer review process.
Acceptance and continuance (paragraphs 28-35)
Before taking on a new client, deciding whether to continue, or accepting a new engagement from an existing client, the firm must obtain the information it needs. Paragraph 28 sets three tests: the firm has considered the client's integrity and has no information suggesting a lack of it; the firm is competent and has the capabilities, time and resources; and it can comply with ethical requirements. If issues arose and the firm still accepted, it documents how they were resolved.
The application material lists what to look at on integrity, including the reputation of owners and management, the client's business practices, the attitude towards aggressive accounting and controls, any indication of money laundering, and the reasons for replacing the previous auditor (paragraph 29). It also covers capacity, such as industry knowledge, enough staff, experts and an available quality reviewer (paragraph 31), and conflicts of interest (paragraph 32).
If the firm later learns something that would have made it decline, it must consider its professional and legal reporting duties and whether to withdraw (paragraph 34). Withdrawal involves discussing with management and those charged with governance, and considering whether any law requires the firm to stay or report the reasons to regulators (paragraph 35).
Illustrative example
Sharma & Rao LLP, a small invented firm, is offered the audit of Bhatia Fabrics Pvt Ltd. Before accepting, the partners check the promoters' background, ask the outgoing auditor under the Code, confirm that no partner holds a loan from the company, and confirm that the firm has staff who know textile inventory. They record that the previous auditor left after a fee dispute and that the promoters wished to keep the audit scope narrow. After a discussion with the promoters on scope, the partners accept and document how that concern was resolved.
Need help with firm-level quality systems?
If your firm is writing or refreshing its quality policies, acceptance checklists or independence confirmations, TaxClue's compliance advisory team can help you set them up in a form that suits your size. Companies preparing for an audit can also use our compliance advisory service to understand the questions an auditor's acceptance process will raise.
Key takeaways
- SQC 1 applies to all firms and requires a documented system covering six elements.
- Leadership must put quality ahead of commercial considerations and name a person with authority to run the system.
- Independence confirmations are taken at least annually; breaches must be reported and resolved.
- For listed entity audits the engagement partner is rotated after a pre-defined period, normally not more than seven years.
- Accept or continue a client only after considering integrity, capability and ability to comply with ethics.
Read next
- SQC 1, part 2: people, engagement performance, review and monitoring
- SQM 1: components of quality management
- SA 220: the engagement partner's responsibilities
- Standards on Auditing: the full list
Disclaimer: Based on the Standards on Auditing and quality standards issued by the Institute of Chartered Accountants of India, in the versions named in the article, and ICAI's announcement of 31 March 2026 on SQM 1 and SQM 2, as consulted on 3 October 2026. ICAI revises standards from time to time; check the current text and effective dates on icai.org. This article is general information, not legal advice; check the official text before acting.