The first useful question about any communication from the GST department is not what it says. It is what it is. The forms look similar, they arrive the same way, and they carry very different consequences.
The sequence
Most matters travel the same path.
A system-generated intimation. DRC-01B for a GSTR-1 against GSTR-3B liability difference under Rule 88C, or DRC-01C for a GSTR-3B against GSTR-2B credit difference under Rule 88D. These are automated, they are not allegations of anything, and they are answered in Part B of the relevant form. Ignore one and Rule 59(6) blocks your next GSTR-1.
ASMT-10, scrutiny of returns. An officer has examined your returns under Section 61 and identified discrepancies. You reply in ASMT-11. If he is satisfied, he issues ASMT-12 and the matter closes.
DRC-01A, an intimation before a show cause notice. This is a pre-notice communication setting out the officer’s view of the liability and giving you an opportunity to pay or explain before formal proceedings begin. It is frequently under-used by taxpayers, and it is the cheapest point in the whole process to resolve a matter.
DRC-01, the show cause notice, under Section 73 or Section 74. This is the formal beginning of adjudication.
DRC-07, the order, quantifying the demand.
The most valuable thing you can do is resolve matters early in that sequence. An ASMT-10 answered properly costs a day. The same issue at appeal costs a pre-deposit, professional fees, and two years.
Section 73 against Section 74
This is the distinction that matters most, and it is worth checking on the face of the notice which one you are dealing with, because the notice will say.
Section 73 covers tax not paid, short paid, erroneously refunded, or credit wrongly availed or utilised, other than by reason of fraud, wilful misstatement or suppression of facts. Ordinary error, in other words.
Section 74 covers the same failures by reason of fraud, wilful misstatement or suppression of facts to evade tax.
The differences that follow are large. Section 74 carries a longer limitation period and a substantially higher penalty, and the penalty reduces on early payment on a different and less generous scale than under Section 73. Under Section 73, paying the tax with interest before the notice is issued can close the matter without penalty, and paying within thirty days of the notice attracts no penalty in the ordinary case.
Because the consequences diverge so sharply, the invocation of Section 74 is itself something to examine. The section requires fraud, wilful misstatement or suppression, and those are not made out merely because tax was short paid. The department must have a basis for alleging them, and where a notice invokes Section 74 on facts that show nothing more than an error, that is a point to take squarely in the reply rather than to argue only on the merits of the underlying tax. A successful challenge to the invocation changes the limitation period and the penalty at once.
Replying well
Most poor outcomes at the notice stage come from the reply, not from the law.
Answer every point, in the order the notice raises them. An officer working through a reply that follows his own numbering can see what has been addressed. A narrative reply that covers everything in a different order reads as evasive even when it is complete.
Attach the reconciliation, not just the conclusion. If the answer is that the difference is reverse charge credit, imports and Rule 37A reclaims, then attach the schedule showing each with amounts that sum exactly to the difference alleged. A reply that names categories without figures invites a second notice.
Reconcile to the rupee. An explanation that accounts for most of a difference leaves the balance standing as an admitted demand.
Do not concede the characterisation. Where a notice under Section 74 alleges suppression, a reply that answers only the tax computation and says nothing about the allegation has effectively let it stand.
Ask for a personal hearing. It is a right, and matters that appear intractable on paper are often resolved in twenty minutes across a desk.
Watch the dates. Reply periods are short and extensions are discretionary. A reply filed late is worth much less than the same reply filed on time.
The relief for the early years
Section 128A, with the procedure in Rule 164, waives interest and penalty on demands under Section 73 for the financial years 2017-18, 2018-19 and 2019-20, where the tax itself is paid. The application is made in FORM GST SPL-01 where no order has been issued, or SPL-02 where one has.
For anyone carrying old demands from the first three years of GST, this is worth a systematic review rather than a case-by-case one. The waiver applies to Section 73 demands only, which is a further reason the Section 73 against Section 74 characterisation matters.
It sits alongside Section 16(5), which retrospectively allows credit for FY 2017-18 to 2020-21 where the return was filed by 30 November 2021. A demand raised under Section 16(4) for one of those years may now be unsustainable in whole or part on the credit itself, with Section 128A dealing with interest and penalty on whatever remains. Reviewing those two together is more productive than either alone, and the relief is available even where no appeal was filed.
Appeals
First appeal, to the Appellate Authority under Section 107, within three months of the order, with a further month condonable on sufficient cause. It requires a pre-deposit of a percentage of the disputed tax, and the balance of the demand is stayed once it is paid.
Second appeal, to the Appellate Tribunal under Section 112, with a further pre-deposit.
The Tribunal is the significant recent development. GSTAT was made operational during 2025, with the Principal Bench also serving as the National Appellate Authority for Advance Ruling. The 56th GST Council set out the operational timeline: appeals accepted from 30 September 2025, hearings commencing by 31 December 2025, and a limitation date of 30 June 2026 for filing backlog appeals.
That backlog date mattered enormously, because for years there was no Tribunal to appeal to and matters accumulated at the first appellate stage with no forward path. Anyone holding an old first appellate order should confirm where it stands against that timeline.
Notification 13/2025-Central Tax also amended the appeal rules, introducing FORM GST APL-02A, a new Rule 110A allowing transfer to a single-member bench where no question of law arises, tied to the Section 109(8) threshold of ₹50 lakh, and a summary order in FORM GST APL-04A.
What actually prevents notices
Almost every notice we see traces back to a difference the taxpayer could have found first.
Run the two automated comparisons yourself, monthly: GSTR-1 liability against GSTR-3B liability, and GSTR-3B credit against GSTR-2B credit. Keep a standing explanation for any structural gap, such as reverse charge credit or imports, so that the reply is a matter of printing a schedule rather than building one.
Keep the working papers. Almost everything asked for in a notice is something you prepared at the time and can produce in five minutes, or something you did not prepare and must now reconstruct from memory across three financial years. The difference between those two positions is entirely a filing decision made years earlier.
The summary
Identify the form before you draft anything. Automated intimations are answered in Part B and block your GSTR-1 if ignored. ASMT-10 is answered in ASMT-11 and is the cheapest place to close a matter. DRC-01 under Section 73 is ordinary error with modest penalty and early payment relief, while Section 74 alleges fraud and should be tested on that allegation rather than only on the tax. Section 128A can clear interest and penalty on Section 73 demands for the first three years, and Section 16(5) may remove the underlying credit demand entirely. Reply to every point with figures that reconcile exactly, ask for the hearing, and keep the working papers that make all of it a short job.