Skip to content

Indirect Tax Laws and Practice · GST Annual Return and GST Audit Return

GSTR-9C Reconciliation Statement and GST Audit

Updated 11 October 2026 · Fact-checked

GSTR-9C is a self-certified reconciliation statement that reconciles the supplies declared in your returns for the year with your audited annual financial statement. Under Rule 80(3), you file it with GSTR-9 by 31 December if aggregate turnover exceeds ₹5 crore. To solve questions, check applicability, tie turnover to the books, and explain each difference.

Understand GSTR-9C Reconciliation Statement and GST Audit

Every regular taxpayer files GSTR-9, the annual return. It summarises what you declared in the monthly or quarterly returns. But your books are prepared separately, in the audited financial statements. The two can differ. GSTR-9C is the bridge between them.

Section 44 says the annual return may include a self-certified reconciliation statement. It reconciles the value of supplies declared in the returns for the year with the audited annual financial statement. Rule 80(3) fixes who must file it: a registered person whose aggregate turnover during a financial year exceeds five crore rupees.

The old regime required a GST audit by a CA or CMA and a certified GSTR-9C. The current rule, as substituted from 30 July 2021, removed the audit requirement. Now the taxpayer certifies the statement. The text of Rule 80(3) calls it a "self-certified reconciliation statement". So the filing is still mandatory above the limit, but a professional's certificate is not.

Not everyone files it. Rule 80(3) excludes the persons named in the second proviso to section 44 (government departments and local authorities whose books are audited by the CAG or a local authority auditor), an Input Service Distributor, a person paying tax under section 51 or 52 (TDS deductors and e-commerce operators collecting TCS), a casual taxable person and a non-resident taxable person.

Do not confuse this with a departmental audit. Section 65 audit is done by tax authorities, and Rule 101 covers it. Audit period is a financial year or part thereof, or multiples. The officer issues notice in FORM GST ADT-01 and communicates the findings in FORM GST ADT-02. Under section 71, the person in charge of the premises must make available the records, including trial balance, audited accounts, cost audit report if any, and the income-tax audit report, within fifteen working days of the demand, or any further period allowed.

Key rules to remember

Applicability of GSTR-9C (Rule 80(3))
Aggregate turnover in the financial year > ₹5,00,00,000 → file GSTR-9C
The turnover must exceed ₹5 crore. Exactly ₹5 crore does not trigger it.
Due date
GSTR-9C is filed with GSTR-9, on or before 31 December following the end of the financial year
The Rule says it is filed along with the annual return. For FY 2020-21 the date was 28 February 2022.
Form for annual return
Regular taxpayer: GSTR-9; section 10 composition: GSTR-9A; e-commerce operator under section 52: GSTR-9B
GSTR-9C is only the reconciliation statement, not a return.
Nature of certification
Self-certified reconciliation statement (section 44(1) and Rule 80(3))
Reconciles value of supplies declared in returns with the audited annual financial statement.
Time limit for late annual return
Not allowed after 3 years from the due date (section 44(2))
Government may allow it by notification, on Council's recommendation, with conditions.
Production of records in a departmental audit (section 71(2))
Within 15 working days of demand, or further period allowed
Records include trial balance, audited accounts, cost audit report and income-tax audit report, if any.

How to solve GSTR-9C Reconciliation Statement and GST Audit questions

Use this order for any GSTR-9C or GST audit question. It keeps your answer structured and shows the examiner you know the rule.

  1. 1Identify the person. Check whether they are excluded: ISD, section 51 or 52 person, casual or non-resident taxable person, or a CAG-audited government body.
  2. 2Test the turnover. Compare aggregate turnover with ₹5 crore. Only an amount above it triggers GSTR-9C.
  3. 3State the due date: with GSTR-9, by 31 December after the financial year, using the Rule 80 reference.
  4. 4Start the reconciliation from turnover in the audited financial statements and compare it with turnover in GSTR-9.
  5. 5List each difference: unreconciled items such as advances, credit notes, deemed supplies, and timing differences between books and returns.
  6. 6Explain the reason for each difference and the action: pay additional tax, adjust in a later return, or accept it as a non-GST item.
  7. 7Confirm that the statement is self-certified and no separate audit certificate is required under the present Rule.
  8. 8If the question is about a departmental audit, switch to section 65, Rule 101 and section 71: notices, findings and production of records.

Quickest way: Three-check shortcut

When to use it: Use when an MCQ or short case asks whether GSTR-9C applies, when it is due, or who certifies.

  1. Check who: regular taxpayer, not an excluded category.
  2. Check how much: turnover above ₹5 crore.
  3. Check when and how: with GSTR-9, by 31 December, self-certified.
  4. For audit by the department, remember ADT-01 notice, ADT-02 findings, 15 working days to produce records.

Common mistakes in GSTR-9C Reconciliation Statement and GST Audit

  • Saying a CA or CMA must certify GSTR-9C.

    Older material required audited accounts and a certified statement.

    Fix: Quote Rule 80(3) as it now stands: a self-certified reconciliation statement.

  • Applying the ₹2 crore limit.

    The old Rule 80(3) used two crore rupees.

    Fix: The present limit is aggregate turnover exceeding five crore rupees.

  • Treating GSTR-9C as an alternative to GSTR-9.

    Both relate to annual compliance.

    Fix: GSTR-9C is filed along with GSTR-9. It does not replace it.

  • Treating a turnover of exactly ₹5 crore as covered.

    Students read the limit as 'up to'.

    Fix: The rule says 'exceeds'. At ₹5 crore the requirement does not apply.

  • Mixing the Rule 80 reconciliation with the section 65 departmental audit.

    Both are called 'GST audit' in everyday use.

    Fix: Self-reconciliation is filed by the taxpayer. Departmental audit is initiated by officers with ADT-01 and ADT-02.

  • Including composition taxpayers under GSTR-9 and GSTR-9C by default.

    Students ignore the proviso to Rule 80(1).

    Fix: A section 10 composition person files GSTR-9A as the annual return. Apply the ₹5 crore test only if the question asks about GSTR-9C.

Worked examples

Example 1

Sundaram Textiles Pvt Ltd, a regular taxpayer in Coimbatore, had aggregate turnover of ₹6,40,00,000 in the financial year. Is GSTR-9C required? Who certifies it and when is it due?

Show the solution
  1. Sundaram Textiles is a regular taxpayer, not an ISD, a section 51 or 52 person, a casual or non-resident taxable person.
  2. Aggregate turnover ₹6,40,00,000 is more than ₹5,00,00,000.
  3. Rule 80(3) therefore requires a self-certified reconciliation statement in GSTR-9C.
  4. It is furnished along with GSTR-9 on or before 31 December following the end of the financial year.

Answer: Yes. GSTR-9C is required, it is self-certified by the taxpayer, and it is due with GSTR-9 by 31 December after the financial year.

Example 2

A registered person's audited financial statements show turnover of ₹5,60,00,000. GSTR-9 shows ₹5,48,00,000 declared in returns. The ₹12,00,000 gap is entirely due to invoices for March raised in the books that were reported in the April return. How do you treat the difference in GSTR-9C?

Show the solution
  1. The turnover exceeds ₹5 crore, so GSTR-9C applies.
  2. Difference = ₹5,60,00,000 − ₹5,48,00,000 = ₹12,00,000.
  3. The difference arises from invoices that were in the books for the year but declared in the April return, which falls in the next year.
  4. Show it as a reconciling item with the reason stated.
  5. Check whether the invoices should have been declared earlier. If the time of supply was in March, tax was due then, so interest may arise and the position should be corrected.

Answer: GSTR-9C is required. The ₹12,00,000 difference is a reconciling item explained as a reporting timing difference. If the supplies were due for tax in March, pay the tax with applicable interest and disclose the correction.

Exam tips

  • MCQs often test the limit and the certification nature. Remember: exceeds ₹5 crore, self-certified.
  • In long answers, name the rule: Rule 80(3) for GSTR-9C and section 44 for the annual return.
  • For a reconciliation question, present a clear table-style list of book turnover, return turnover, difference and reason, in bullets.
  • Do not mix section 65 departmental audit with taxpayer reconciliation. Use the ADT forms for the former.
  • If a case mentions cost audit, remember section 71(2)(iv): the cost audit report may be demanded during audit scrutiny.

Practice questions from GST Annual Return and GST Audit Return

GSTR-9C Reconciliation Statement and GST Audit in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

GSTR-9C Reconciliation Statement and GST Audit: frequently asked questions

What is the difference between GSTR-9 and GSTR-9C?

GSTR-9 is the annual return summarising outward and inward supplies and tax paid during the year. GSTR-9C is a reconciliation statement that reconciles the value of supplies in the returns with the audited annual financial statement. GSTR-9C is filed along with GSTR-9 above the turnover limit.

What is the turnover limit for GSTR-9C?

Rule 80(3) applies it to registered persons whose aggregate turnover during a financial year exceeds five crore rupees. At exactly five crore it is not mandatory.

Does GSTR-9C need a CA or CMA certificate?

No. Under the present Rule 80(3) the reconciliation statement is self-certified. Earlier rules required audit and certification by a professional.

Who is excluded from filing GSTR-9C?

The exclusions are the same persons excluded from Rule 80: government bodies covered by the second proviso to section 44, ISDs, persons paying tax under section 51 or 52, casual taxable persons and non-resident taxable persons.

What is the due date for GSTR-9C?

It is filed along with the annual return on or before 31 December following the end of the financial year. A one-time extension to 28 February 2022 applied to FY 2020-21.