GST Appeal Against NIL Demand: APL-01 Portal Update for 2026

The Demand Was Paid, but the Liability Is Still Disputed

A taxpayer pays an amount while a show cause notice is being handled. The adjudicating authority later issues an order that records the demand as NIL or zero because the payment is already reflected. The taxpayer still disputes the underlying liability, but the GST portal previously blocked an appeal because the order showed no outstanding demand.

That portal obstacle changed in September 2026. GSTN removed the validation that prevented certain appeals in Form GST APL-01 against NIL or zero demand orders. For CA teams, the update changes a filing step. It does not decide whether the order is legally wrong or whether an appeal will succeed.

What GSTN Changed

In its advisory dated 7 September 2026, GSTN said that taxpayers may file APL-01 against an order showing NIL or zero demand when both of these conditions apply:

A dispute regarding liability exists.
The taxpayer made payment before the demand order was issued.

The portal validation that previously restricted filing in these cases has been removed. GSTN also says taxpayers facing a filing difficulty may raise a ticket with the GST Helpdesk.

This is a specific portal change, not a general rule that every order showing zero can be appealed. The facts in the order, payment record, and grounds of dispute still matter.

Why a NIL Demand Could Block an Appeal

The issue can arise when payment is made at the show cause notice stage, in full or in part, without accepting the alleged liability. If the later adjudication order treats that payment as full discharge and records no outstanding demand, the portal may have had no positive demand value against which to validate the disputed amount in APL-01.

This created a gap between two records:

Record	What it may show
Adjudication order	Findings or liability that the taxpayer wants to challenge
Demand record on the portal	NIL or zero outstanding amount because payment was made earlier

The September advisory addresses the portal validation problem for the specified fact pattern. It does not change the order itself, establish that payment was made under protest, or determine whether the taxpayer has valid grounds to appeal.

First Confirm That the Case Fits the Update

Before starting an appeal, match the case to the advisory. Confirm that the taxpayer disputes liability recorded in the order and that payment occurred before the order date. Keep the payment date and order communication date distinct in the file.

Review these records together:

The show cause notice and its proposed liability.
The taxpayer’s response and supporting evidence.
The adjudication order, including its findings and demand summary.
Payment challans, DRC-03 details, and relevant electronic liability ledger entries.
The portal demand record and any Demand ID associated with the order.
The date the order was communicated to the taxpayer.

If the order simply records no liability and there is no adverse finding or live dispute to challenge, the NIL figure alone does not create grounds for an appeal. If payment was made after the order, or the order concerns a different issue, do not assume this advisory resolves the portal block.

CA Checklist Before Filing APL-01

1. Identify the appealable order

Match the order number, issuing authority, section, tax period, and date with the portal record. Check that the order is available for appeal in the GST portal workflow.

2. Write the dispute in concrete terms

List the findings being challenged and the evidence that supports each ground. Keep the grounds tied to the order. A payment receipt by itself does not explain why the liability determination should be changed.

3. Reconcile payment with the order

Prepare a short timeline showing when the notice was issued, when payment was made, when the reply was filed, and when the order was issued and communicated. Reconcile the paid amount with the order and portal ledger. Do not treat a payment entry as proof that the liability was admitted or that a statutory pre-deposit requirement is automatically met.

4. Check the filing period and payment requirements

GSTN’s APL-01 FAQ states that an appeal to the Appellate Authority is ordinarily filed within three months from communication of the order. It also describes a limited additional period that may be condoned for sufficient cause. The FAQ separately lists payment of the admitted amount and the applicable pre-deposit as filing requirements. Confirm the current law and the case-specific calculation before submission.

The September 2026 NIL demand update removes a portal validation in a defined situation. It does not extend the appeal deadline, waive pre-deposit obligations, or guarantee admission of the appeal.

5. Keep filing evidence

Save the filed APL-01, ARN, payment references, uploaded order and annexures, and any portal acknowledgement. The GSTN FAQ explains that a self-certified copy of the order may need to be submitted within seven days if the order was not uploaded with the application. Check the live portal instructions for the case before relying on a general checklist.

If the Portal Still Blocks the Application

First confirm that the case meets the advisory conditions and that the selected order, Demand ID, and payment dates are correct. Save a screenshot of the error and note the date and time. GSTN’s advisory directs affected taxpayers to raise a ticket with the GST Helpdesk if they continue to face difficulty.

Older guidance for the April 2026 portal issue advised taxpayers to seek rectification where the order itself did not correctly record the liability. The September update later removed the filing validation for the specified NIL or zero demand cases. If the order contains an error beyond the portal validation, or the present facts do not match the September advisory, the appropriate remedy should be assessed with the authorised tax professional.

What the Update Does Not Mean

It does not make every NIL or zero demand order appealable automatically.
It does not mean that an appeal succeeds because the portal accepts APL-01.
It does not change the grounds, limitation period, or statutory payment requirements for an appeal.
It does not replace careful review of the order and the evidence behind the payment.

Portal acceptance is a filing capability. The Appellate Authority still considers the appeal under the applicable law and procedure.

Where Invozen Fits

Invozen does not file GST appeals, calculate appeal pre-deposits, or provide legal representation. It helps CA teams organise invoice records and client workspaces for the routine compliance work connected to a GST account. Appeal documents, payment proofs, legal grounds, and filing decisions should be handled by the taxpayer and their authorised tax professional.

The Short Version

GSTN’s 7 September 2026 update allows APL-01 filing in a specific NIL or zero demand situation: a liability dispute exists and payment was made before the demand order. Verify those facts, reconcile the order with the payment trail, check limitation and applicable pre-deposit requirements, and preserve the filing acknowledgement. If the portal still rejects a matching case, record the error and raise a GST Helpdesk ticket.

Note: This article summarizes a GSTN portal update and general GSTN filing guidance. It is not legal or tax advice. Confirm current portal instructions and applicable law with an authorised tax professional before filing.