Form GST REG-31 intimation and how to stop suspension of your GSTIN

What REG-31 is and what it does the moment it is issued

Form GST REG-31 is the "intimation for suspension and notice for cancellation of registration", introduced by Notification 94/2020-Central Tax dated 22 December 2020. It is issued under Rule 21A(2A) of the CGST Rules.

The rule works like this. Where a comparison of the returns you have filed under section 39 with the outward supplies you declared in GSTR-1, or with the inward supplies derived from your suppliers' GSTR-1s, or any other analysis carried out on the recommendation of the Council, shows significant differences or anomalies indicating a contravention that would lead to cancellation, your registration is suspended and you are intimated in REG-31, electronically on the portal or by email to the address on your registration, with the differences highlighted, and you are asked to explain within thirty days why the registration should not be cancelled.

Read that carefully. The suspension is not a proposal. It takes effect from the date of the intimation. There is no pre-suspension hearing, because the proviso to Rule 21A(2) that required a reasonable opportunity of being heard before suspension was omitted by the same 2020 notification. This is why REG-31 has to be treated as an emergency rather than as correspondence.

CBIC issued Circular 145/01/2021-GST on 11 February 2021 as a standard operating procedure for these cases. Where the REG-31 functionality is not fully available, the intimation may be issued in Form GST REG-17 or communicated by email, and the reply is furnished in Form GST REG-18 through Services, then Registration, then Application for Filing Clarifications.

The statutory framework at a glance

What suspension actually stops

Rule 21A(3) says a person whose registration is suspended shall not make any taxable supply during the period of suspension and shall not be required to furnish any return under section 39. Rule 21A(3A) says no refund under section 54 shall be granted during the suspension.

In commercial terms, you cannot issue a tax invoice or charge GST. E-way bill generation against your GSTIN is blocked, which stops goods moving. Your GSTIN shows as "Suspended" on the public search on the portal, so customers doing routine vendor checks will see it, and larger buyers will hold payments. Your outward invoices for the suspension period do not flow into your customers' GSTR-2B, so their input tax credit stops as well, and that is usually what generates the phone calls.

There is a useful provision on the other side. Rule 21A(5) applies section 31(3)(a) and section 40 once the suspension is revoked, which means you can issue revised invoices for supplies made during the suspension period and declare them in the first return filed after revocation. The commercial damage is therefore recoverable if you move fast.

In practice the portal continues to allow you to file pending returns while suspended, and that matters a great deal for the most common category of case.

Why REG-31 notices are issued

The largest single category is non-filing. Rule 21(h) allows cancellation where a person required to file monthly returns under section 39(1) has not furnished returns for a continuous period of six months, or for two consecutive tax periods under the quarterly scheme, and Rule 21(i) covers composition taxpayers who have not filed for three consecutive tax periods.

The second category is the GSTR-1 against GSTR-3B gap, covered by Rule 21(f), where the outward tax declared in GSTR-1 exceeds the tax declared in GSTR-3B for one or more tax periods by more than the prescribed limits. This is the classic "you reported the sale but did not pay the tax" case, and it is now picked up automatically.

The third is the input tax credit gap, where credit availed in GSTR-3B substantially exceeds what is available in GSTR-2B, covered by Rule 21(e) which deals with credit availed in violation of section 16.

The remaining grounds under Rule 21 include not conducting business from the declared place of business, issuing invoices without an underlying supply, failure to furnish bank account details as required by Rule 10A, and violation of Rule 86B on the mandatory 1 per cent cash payment for high-turnover taxpayers.

Field verification also feeds this. If a physical verification finds no signboard, no stock and no staff at the principal place of business, a REG-31 or a REG-17 follows quickly.

What to do in the first week

Read the annexure and identify which of the grounds above is actually being alleged, because the fix is different for each. If it is non-filing, file everything that is pending, with tax, interest and late fee, before you draft a word of reply. The proviso to Rule 21A(4) provides that where registration was suspended under Rule 21A(2A) for contravention of section 29(2)(b) or (c), which are the non-filing grounds, and cancellation has not already been ordered under Rule 22, the suspension shall be deemed to be revoked on furnishing of all the pending returns. That is automatic relief and it does not require the officer to act.

There is now a hard constraint on this. Returns under sections 37, 39, 44 and 52 cannot be filed more than three years after their due date, and the portal has enforced this from the November 2025 tax period onwards. If part of your default falls outside the three-year window you simply cannot file those returns, and the deemed revocation route is unavailable for them. In that situation you have to explain the position in the reply, pay any tax due through Form GST DRC-03, and ask the officer to drop proceedings on the merits. Say so plainly rather than promising filings you cannot make.

If the ground is a GSTR-1 against GSTR-3B gap, prepare the month-wise reconciliation, pay the genuine shortfall with interest through DRC-03, and attach the challan to the reply. If it is an input tax credit gap, produce the reconciliation of the credit register against GSTR-2B, separating late-filed supplier invoices, import credit, input service distributor credit and reverse charge credit. If it is a Rule 10A bank account issue, add the bank account on the portal through a core field amendment the same day and attach the amendment ARN.

Then file the reply in REG-18 within thirty days, and follow it up in person or by email with the jurisdictional range office. REG-31 files are cleared by officers, not by the system, and a physical follow-up is usually what converts a filed reply into a REG-20.

What happens after the reply

If the officer is satisfied, an order in Form GST REG-20 is passed dropping the proceedings, and the suspension is revoked with effect from the date it was imposed under Rule 21A(4). Your GSTIN goes back to active and you can issue revised invoices for the intervening period.

If the officer is not satisfied, or you do not reply within thirty days, cancellation follows in Form GST REG-19. The cancellation may be prospective or, in serious cases, retrospective, and a retrospective cancellation is far more damaging because it invalidates the credit your customers took on your invoices for the whole retrospective period.

After cancellation the route is revocation. An application in Form GST REG-21 must be filed within ninety days from the date of service of the cancellation order, and the Additional or Joint Commissioner may extend that by up to a further one hundred and eighty days. Under the proviso to Rule 23, all returns due up to the date of cancellation must be filed, with tax, interest, penalty and late fee paid, before the application is made. Where the cancellation was retrospective, the returns for the whole period up to the date of the revocation order must be filed within thirty days of that order. The officer may issue a notice in Form GST REG-23 seeking clarification, to be answered in Form GST REG-24 within seven working days, before passing the revocation order in Form GST REG-22.

If revocation is refused and the ninety-day window has gone, the remaining routes are an appeal under section 107 within three months, or a writ petition. High Courts have been reasonably sympathetic to small taxpayers who lost registration for non-filing and later paid up, but relief is discretionary and depends heavily on how quickly you moved.

Mistakes that cost the business real money

Waiting for the thirty days to run out while trying to arrange funds is the worst of them, because in non-filing cases the deemed revocation is triggered by the act of filing, not by the reply. Even a partial catch-up filed early changes the officer's view.

Replying with an explanation but not filing the returns achieves nothing, because Rule 21A(4) is triggered by furnishing the returns.

Filing the reply by email to the officer instead of in REG-18 on the portal leaves no record, and the system will proceed to cancellation on the assumption that no reply was received.

Continuing to issue tax invoices during the suspension period is a direct breach of Rule 21A(3) and creates a fresh and much more serious allegation. Issue delivery challans or proforma invoices instead, record the supplies, and convert them to revised tax invoices under Rule 21A(5) once the suspension is revoked.

Letting the registered email address and mobile number go stale is how most taxpayers discover a REG-31 only when a customer tells them the GSTIN shows as suspended. Update the authorised signatory details on the portal and check View Additional Notices and Orders at least weekly.

Assuming that a second GSTIN in the same state solves the problem is wrong and dangerous; the department links PANs and a fresh registration application while a cancellation proceeding is pending will be examined against the same grounds.

What to attach to the REG-18 reply

The acknowledgements for all returns filed to clear the default, the DRC-03 challans for any tax paid with interest, a month-wise reconciliation for whichever mismatch is alleged, the electronic credit and cash ledger extracts, proof of the principal place of business such as the rent agreement, electricity bill, property tax receipt and photographs of the premises and signboard, the bank account details and the core amendment ARN if Rule 10A is in issue, and a short covering letter that deals with each anomaly in the annexure by number rather than in general terms.

Doing it yourself or getting help

If the REG-31 is purely for non-filing and you can fund the pending returns, the cleanest response is to file everything and file the REG-18 yourself; the deemed revocation under Rule 21A(4) usually does the rest. Get professional help where the intimation alleges invoices without supply, where a physical verification report is involved, where retrospective cancellation is proposed, where part of your default falls outside the three-year filing window, or where cancellation has already been ordered and you are into the revocation and appeal timelines. Those timelines are short and unforgiving, and the cost of losing a GSTIN for a trading business is almost always larger than the cost of professional help.