Every week, businesses discover GST demand orders they never knew existed — confirmed ex parte, months earlier, on the strength of notices they never saw. The notices were not posted, not e-mailed, not handed over: they were uploaded to the GST portal, often under a tab many taxpayers did not know existed. Whether that business can now get the order set aside frequently turns on a single, little-read provision: Section 160(2) of the CGST Act. This case study — a composite drawn from matters handled by our GST litigation team, with identifying details changed — shows how the provision operates, and why the first reply you file decides the fate of every service objection you will ever want to raise.
The situation: a ₹2.8 crore order discovered through a bank attachment
A mid-sized Haryana trading company learnt of its GST demand the hard way: its bank informed it that the account had been attached for recovery of over ₹2.8 crore. On checking the portal, the company found a complete adjudication trail it had never participated in — a show cause notice under Section 73 for an ITC mismatch, two reminders, and a final order — all uploaded only under the ‘Additional Notices and Orders’ tab of the portal. No e-mail had been sent to the registered e-mail ID; nothing came by post; no hearing was ever fixed. The company's compliance team had been checking the ‘Notices and Orders’ tab regularly — the other tab had simply never been on anyone's radar. By the time the order surfaced, the normal appeal window had expired.
The legal framework: Section 169, and the two traps in Section 160(2)
Section 169 of the CGST Act lists the permissible modes of serving notices and orders — including hand delivery, registered post, e-mail to the registered address and upload on the common portal. The department's position in these cases is simple: portal upload is a listed mode, so service is complete. But a substantial body of High Court authority — led by a sustained line of Madras High Court decisions and followed elsewhere — holds that the test is effective service, not mechanical upload: where a notice is lodged only under an obscure tab, with no e-mail or postal follow-up, and the taxpayer demonstrably remained unaware and was proceeded against ex parte, courts have treated the service as ineffective and set aside or remanded the orders, usually on terms of a partial deposit.
Section 160(2) is where the battle is actually won or lost. It provides that the service of any notice, order or communication shall not be called in question in two situations: first, where the notice has already been acted upon by the person to whom it was issued; and second, where the service was not called in question at or in the earliest opportunity in the course of the proceedings. Read carefully, the provision cuts both ways. A taxpayer who replied to the notice, sought adjournments or attended hearings — and only after an adverse order complains that service was defective — has statutorily waived the objection: he acted upon the notice, and he stayed silent at the earliest opportunity. But a taxpayer who never knew of the notice at all satisfies neither limb: he never acted upon it, and he had no ‘opportunity’ —



