How to File an Appeal Before the GST Appellate Tribunal (GSTAT): A Practical Guide

By S&S Co. Advocates & Solicitors · Published 20 September 2026 · Informational content, not legal advice — see our disclaimer

GSTAT Is Now Operational — What Changed

The GST Appellate Tribunal's e-filing portal has been operational since 24 September 2025, giving taxpayers a dedicated appellate forum for GST disputes for the first time since the GST regime began — before this, appeals against an adverse first-appellate order under Section 107 had no functioning tribunal to go to, leaving a large backlog of matters effectively stuck. Appeals to GSTAT are filed electronically only, using Form GST APL-05 on the Tribunal's own portal.

Two Different Limitation Tracks

GSTAT filing operates on two distinct timelines depending on when the underlying order was passed. For orders communicated on or after 1 April 2026, the standard Section 112 CGST Act limitation applies: three months from communication of the order, extendable by up to a further three months on a showing of sufficient cause under Section 112(6) — with no condonation possible beyond that outer ceiling. Courts have taken the firm position that neither GSTAT nor a court can extend limitation beyond this statutory condonable ceiling, so a delay of even a single day beyond it makes the appeal time-barred.

For legacy or backlog orders predating GSTAT's operationalisation, a special one-time filing window applied, with the government-notified deadline extended from 30 June 2026 to 31 July 2026 due to portal technical issues and the sheer volume of filings. Taxpayers with an older, pending GST appeal should confirm which track their matter falls under before assuming the standard three-month window applies.

The Mandatory Pre-Deposit

As with the first-appellate stage, a mandatory pre-deposit applies before a GSTAT appeal is entertained, with the applicable percentage varying depending on whether it is the first or second appellate stage of the dispute. Because pre-deposit rules have been amended in this cycle, the exact current percentage and any cap on the disputed tax amount should be confirmed against the current text of Section 112(8) at the time of filing rather than assumed from an earlier figure.

Filing Checklist

A GSTAT appeal filed via Form APL-05 should be accompanied by: a certified copy or reference number of the order under appeal, clearly framed grounds of appeal, the pre-deposit challan evidencing payment, and any supporting documents relevant to the grounds raised — all uploaded through the portal rather than filed physically. Since the portal experienced technical issues during the legacy filing window, taxpayers should not wait until the final days of any deadline to attempt filing, and should retain evidence of any genuine, timely attempt to file in case a technical failure needs to be raised before the Tribunal.

Frequently Asked Questions

References & Further Reading

This article references the following statutory provisions. Readers should always verify current rules, fees and timelines against the applicable statute and rules as amended, since these are revised from time to time.

1. Central Goods and Services Tax Act, 2017, Section 112, as amended.
2. GST Appellate Tribunal (Procedure) Rules and e-filing portal instructions, current as of the date of filing.
3. Government notifications extending the legacy appeal filing window, which should be checked for the current applicable deadline.