Taxation · Accounts and Records

Retention Period and Electronic Records under GST Section 36

Updated 4 October 2026 · Fact-checked

Under Section 36 of the CGST Act, a registered person must keep books of account and records until 72 months after the due date of the annual return for that year. If an appeal, revision, proceeding or offence investigation is pending, keep related records for one year after final disposal, or the 72 months, whichever is later.

Understand Retention Period and Electronic Records

Section 35 tells a registered person what accounts and records to keep. Section 36 answers the next question: for how long. The idea is simple. The department can examine a year's returns long after they are filed, so the records must still exist when it does.

Section 36 applies to every registered person who is required to keep and maintain books of account or other records under Section 35(1). The clock does not start when you file the return, and it does not start at the end of the financial year. It starts from the due date of furnishing the annual return for the year to which the records relate. You then add 72 months, which is six years. Filing late does not extend the period, and filing early does not shorten it.

There is one exception, which extends the period. It applies if you are a party to an appeal, revision or any other proceedings before the Appellate Authority, Revisional Authority, Appellate Tribunal or a court, whether filed by you or by the Commissioner. It also applies if you are under investigation for an offence under Chapter XIX (offences and penalties) of the Act. In that case you must keep the books of account and other records pertaining to the subject matter of that appeal, revision, proceedings or investigation. You keep them for one year after final disposal, or for the 72-month period, whichever is later.

Records may be kept in electronic form. Section 35(1) permits accounts and records to be maintained electronically. The conditions come from Rule 56 of the CGST Rules. Two separate requirements in Rule 56 matter here. First, entries in registers, accounts and documents must not be erased, effaced or overwritten. Second, the method of correction depends on how you keep the books. If the registers and documents are kept electronically, you must maintain a log of every entry edited or deleted. If they are kept manually, an incorrect entry (other than a clerical one) is scored out under attestation and the correct entry is then recorded. Do not mix the two: the log belongs to electronic books, and scoring out under attestation belongs to manual books. For manual books, all pages must also be serially numbered.

If a taxable person fails to keep, maintain or retain books of account and other documents as the Act or the rules require, the penalty provision is Section 122(1), clause (xvi). For this default the penalty is ₹10,000. The "whichever is higher" limb of Section 122(1) refers to an amount equivalent to the tax evaded, input tax credit wrongly availed or passed on, or refund wrongly taken. It applies only where such an amount arises in connection with the default. A failure to keep books does not by itself mean tax was evaded. Where no such tax amount is involved, the penalty is ₹10,000. Where no specific penalty is provided for a contravention, the general penalty in Section 125 (up to ₹25,000) can apply. Missing records also weaken your defence in assessment, audit and ITC matters.

Key rules to remember

General retention period (Section 36): Retention ends = due date of annual return for the year + 72 months; Counted from the due date, not the actual filing date. Applies to every registered person required to keep records under Section 35(1).
Retention during litigation or investigation: Retain until the LATER of: (final disposal + 1 year) or (due date of annual return + 72 months); Applies to a registered person who is a party to an appeal, revision or other proceedings before the Appellate Authority, Revisional Authority, Appellate Tribunal or court (filed by him or by the Commissioner), or is under investigation for an offence under Chapter XIX. Covers only records pertaining to the subject matter of that matter.
Electronic records (Section 35(1) read with Rule 56): Electronic form permitted (Section 35(1)) + Rule 56: no erasing, effacing or overwriting of entries + electronic books: log of every entry edited or deleted; Manual books are different: an incorrect entry (other than a clerical one) is scored out under attestation and the correct entry recorded, and all pages must be serially numbered.
Penalty for failing to keep, maintain or retain records: Section 122(1)(xvi): penalty of ₹10,000 for the books default. The 'higher of' limb (tax evaded, ITC wrongly availed or passed on, refund wrongly taken) applies only where such an amount arises in connection with the default.; Section 122(1) lists specific offences, and clause (xvi) covers failure to keep, maintain or retain books and documents. Section 125 general penalty (up to ₹25,000) applies where no specific penalty is provided.

How to solve Retention Period and Electronic Records questions

Use this method for any question on how long to keep records, or on the consequences of not keeping them.

1Identify the person. Check that he is a registered person bound to maintain records under Section 35(1).
2Identify the financial year to which the records relate.
3Find the due date of the annual return for that year. Use the due date, even if the return was filed earlier or later.
4Add 72 months to that due date. This is the basic retention date.
5Check for an appeal, revision, other proceedings before the listed forums, or an investigation for an offence under Chapter XIX. If there is one, compute final disposal date + 1 year for the related records.
6Take the later of the two dates for those records. Other records still follow the basic date.
7If the question mentions electronic records, check the Rule 56 conditions: no erasing or overwriting of entries, and a log of every entry edited or deleted for electronic books. For manual books, correction is by scoring out under attestation.
8For default, state the provision, the fact, and the consequence: penalty under Section 122(1)(xvi), which is ₹10,000 for the books default. Add that the higher-of limb applies only if tax evaded, ITC wrongly availed or passed on, or refund wrongly taken arises in connection with the default. Mention Section 125 if no specific penalty applies.

Quickest way: Date + 72 months, then check for litigation

When to use it: Use for MCQs on retention dates and for the first few lines of a written answer.

MCQ: write the annual return due date. Add exactly 6 years to it. Eliminate options that count from the year end or the filing date.
MCQ: if the question mentions a pending appeal, compute disposal + 1 year and pick the later date.
MCQ on electronic records: pick the option that says records may be kept electronically with a log of every entry edited or deleted, and no erasing or overwriting. Scoring out under attestation belongs to manual books.
Written answer format: state the provision (Section 36 CGST Act), apply the facts with the dates shown, then conclude with the date and the penalty exposure if relevant.
Show the date calculation line by line. Step marks are given for the due date, the 72 months and the comparison of dates.

Common mistakes in Retention Period and Electronic Records

Counting 72 months from the end of the financial year.
Students mix this with limits in other provisions that run from the year end.
Fix: Always anchor to the due date of the annual return for that year. For a year ending 31 March, that is normally 31 December of the next calendar year.
Counting from the date the annual return was actually filed.
It feels natural to start the clock when you file.
Fix: The Act says due date of furnishing. Late or early filing does not change the retention date.
Saying 'six years' for the litigation case without checking the proviso.
Students remember 72 months and forget the extension.
Fix: If an appeal, revision, other proceedings or an offence investigation is pending, compare disposal + 1 year with the 72-month date and take the later one.
Applying the extended period to all records of the person.
The proviso sounds like a blanket rule.
Fix: The extension covers only records pertaining to the subject matter of the appeal, revision, proceedings or investigation.
Mixing the Rule 56 correction methods for electronic and manual books.
Students remember 'no overwriting', 'log' and 'attestation' as one bundle.
Fix: Entries must not be erased or overwritten in any books. For electronic books, keep a log of every entry edited or deleted. For manual books, score out an incorrect entry (other than a clerical one) under attestation and record the correct entry.
Treating every books default as a 'higher of ₹10,000 or tax amount' case, or citing only 'Section 122(1)' without the clause.
Students memorise the 'whichever is higher' wording of Section 122(1) and skip the clause number.
Fix: Say: under Section 122(1)(xvi), the penalty for the books default is ₹10,000. The higher-of limb applies only where tax evaded, ITC wrongly availed or passed on, or refund wrongly taken arises in connection with the default. Mention Section 125 as the general penalty where no specific penalty is provided.

Worked examples

Example 1

Sharma Traders, a registered person, maintains books of account under Section 35 for the financial year 2024-25. The due date of the annual return for that year is 31 December 2025. The return was actually filed on 20 January 2026. There is no litigation. Until which date must the records be retained?

Show the solution

The retention period runs from the due date of furnishing the annual return, not from the filing date.
Due date = 31 December 2025.
Add 72 months (6 years): 31 December 2025 + 6 years = 31 December 2031.
The late filing on 20 January 2026 does not change the date.
There is no appeal or investigation, so the proviso does not apply.

Answer: Sharma Traders must retain the records for 2024-25 until 31 December 2031.

Example 2

Mehta Enterprises is a party to an appeal before the Appellate Authority concerning its supplies of 2022-23. Assume the annual return due date for 2022-23 was 31 December 2023. The appeal is finally disposed of on 15 March 2030. Until which date must it retain the records pertaining to the appeal?

Show the solution

Basic period: due date 31 December 2023 + 72 months = 31 December 2029.
Proviso: records pertaining to the appeal must be kept for one year after final disposal.
Final disposal 15 March 2030 + 1 year = 15 March 2031.
Compare the two dates: 31 December 2029 and 15 March 2031.
The Act requires the later of the two. The later date is 15 March 2031.
Records not connected with the appeal still follow the basic date of 31 December 2029.

Answer: Mehta Enterprises must retain the records pertaining to the appeal until 15 March 2031.

Exam tips

Practise one date calculation per sitting. Examiners usually give a year, an annual return due date and sometimes a disposal date, and ask for the last date of retention.
Write the due date and the 72-month date as separate lines. Do not jump to the final answer.
In the litigation case, show both dates and state clearly that you are taking the later one.
For penalty questions, write provision, fact and conclusion. Name Section 122(1)(xvi) and state the penalty of ₹10,000 for the books default. Say that the higher-of limb applies only where tax evaded, ITC wrongly availed or passed on, or refund wrongly taken is involved, and add Section 125 only where no specific penalty fits.
For electronic records, keep the two Rule 56 points apart: the log of edited or deleted entries is for electronic books, and scoring out under attestation is for manual books.
For MCQs, watch for traps that start the clock at the year end or at the filing date. Reject both.

Practice questions from Accounts and Records

Retention Period and Electronic Records in other exams

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

Retention Period and Electronic Records: frequently asked questions

What is the period of retention of accounts under GST Section 36?

A registered person required to keep records under Section 35(1) must retain them until 72 months from the due date of furnishing the annual return for the year to which they relate. If he is a party to an appeal, revision or other proceedings before the specified authorities or a court, or is under investigation for an offence under Chapter XIX, the related records are kept for one year after final disposal or for the 72 months, whichever is later.

Can GST records be kept only in electronic form?

Section 35(1) permits accounts and records to be maintained in electronic form. Rule 56 says entries must not be erased or overwritten, and electronic books must carry a log of every entry edited or deleted. You should still make sure supporting documents such as invoices can be produced when asked.

What is the penalty for not maintaining books of account under GST?

Failing to keep, maintain or retain books and documents as required falls under Section 122(1)(xvi). The penalty for this default is ₹10,000. The higher-of limb applies only where tax evaded, ITC wrongly availed or passed on, or refund wrongly taken arises in connection with the default. Where no specific penalty is provided for a contravention, Section 125 provides a general penalty up to ₹25,000.

Does the 72 months start from the date I file GSTR-9?

No. It starts from the due date of the annual return for that year, even if you file earlier or later. Late filing therefore does not give you extra time to keep the records.