Can a GST Appeal Increase Your Tax Liability? What Section 107(11) Says

Appealing a tax order is a statutory right. But what happens when challenging a demand leaves the taxpayer facing an even larger liability?

That question came into focus before the Supreme Court in M/s Saudi Arabian Airlines v. Union of India, decided on 1 September 2026. The airline had originally faced a penalty of ₹12,000. After the matter was remanded for fresh adjudication, the penalty was enhanced to ₹71,29,140.

The Supreme Court examined the principle of “no reformatio in peius” — a legal principle generally understood to mean that a person should not ordinarily be placed in a worse position merely because they exercised a legal remedy. The Court ultimately held that the enhanced penalty could not be sustained in the circumstances of that case.

But there is an important GST question behind this judgment: Does this mean a taxpayer's GST liability can never increase after filing an appeal?

The answer is more nuanced.

What Was the Saudi Arabian Airlines Case About?

The dispute did not arise under GST.

It concerned Foreign Travel Tax under the Finance Act, 1979. Saudi Arabian Airlines had deposited the tax after the prescribed timeline on several occasions. The question before the Supreme Court included whether delayed payment could automatically be treated as a “failure to pay” attracting the statutory penalty.

The Court examined the language of the relevant provisions and held that “failure to pay” could not simply be equated with delayed payment. The penalty therefore did not automatically follow merely because payment had been delayed.

The appellate issue then raised a broader legal principle.

The Court considered whether a person who approaches an appellate forum can be placed in a substantially worse position merely because that person exercised a remedy available under law.

This is where the principle of no reformatio in peius became important.

What Does “No Reformatio in Peius” Mean?

The Latin expression essentially refers to a situation where an appellant's position should not ordinarily become worse merely because the appellant challenged an order.

In simple terms:

You challenge an order → the appeal should not itself become the reason for imposing a more adverse consequence, unless the law permits it.

However, this principle is not an unlimited rule against enhancement.

The Supreme Court's decision does not mean that every statutory appellate authority is prohibited from increasing a liability. The real question is whether the relevant statute gives the authority that power and whether the authority follows the safeguards prescribed by that statute.

And this distinction becomes particularly important under GST.

What Does GST Say About Enhancement?

Under Section 107(11) of the CGST Act, the Appellate Authority has the power to confirm, modify or annul the decision appealed against.

The provision also specifically deals with circumstances in which an appellate authority proposes an enhancement.

For example, the first proviso to Section 107(11) provides safeguards where the authority proposes enhancement of a fee, penalty or fine in lieu of confiscation, or certain other adverse modifications.

Most importantly, the appellant must be given a reasonable opportunity of showing cause against the proposed adverse order.

The second proviso becomes particularly important where the appellate authority proposes an additional tax liability or finds that input tax credit has been wrongly availed or utilised.

In such circumstances, a show-cause opportunity is required, and the resulting order must remain within the applicable statutory framework and limitation provisions.

So, the GST position is not simply:

“An assessee filed an appeal, therefore the liability cannot increase.”

Instead, the more important question is:

“If the appellate authority wants to increase the liability, has it followed the specific procedure prescribed by Section 107(11)?”

What Happens If Section 107(11) Is Not Followed?

A useful example comes from the Calcutta High Court's decision in Hriday Kumar Das v. State of West Bengal, decided on 24 September 2024.

In that case, the tax liability determined by the adjudicating authority was approximately ₹2.58 lakh. The assesses challenged the order.

During the appeal, however, the appellate authority Suo motu enhanced the tax liability without following the procedure prescribed under Section 107(11).

The Calcutta High Court held that the enhancement was not sustainable in law and interfered with the appellate order.

The case demonstrates an important point: an appellate authority's power to modify an order does not mean that it can introduce an adverse enhancement without following the statutory safeguards.

Another 2026 Example: Lakshmi Narayan Shah

The issue came up again in Lakshmi Narayan Shah v. State of West Bengal, decided by the Calcutta High Court on 14 January 2026.

The appellate authority had considered an alleged excess zero-rated supply and increased the taxable turnover, resulting in additional GST liability.

The taxpayer argued that this issue had not formed part of the original adjudication and that the taxpayer had not been given an opportunity to meet the proposed enhancement.

The High Court referred to the requirements of Section 107(11) and held that the appellate order, to the extent it enhanced the tax liability without following the prescribed procedure, could not stand. The matter was remanded for reconsideration of that aspect.

This case is particularly useful because it shows how the procedural safeguard under Section 107(11) operates in an actual GST dispute.

So, Can a GST Appeal Increase Your Liability?

Yes, potentially but not without following the law.

Section 107(11) itself recognises situations in which an appellate authority can make an adverse enhancement.

Therefore, the Supreme Court's decision in Saudi Arabian Airlines should not be interpreted as creating an absolute rule that a taxpayer's position can never become worse after an appeal.

Instead, the broader lesson is about statutory authority and procedural fairness.

If an appellate authority proposes an enhancement, the taxpayer should be given the opportunity required under the GST law to understand the proposed increase and respond to it.

Why Section 107(11) Matters for Businesses

For businesses, GST appeals are not simply about challenging the amount demanded in an order.

An appeal can involve questions relating to:

1. Tax liability
2. Input Tax Credit
3. Penalties
4. Refunds
5. Classification
6. Taxable turnover
7. Valuation
8. Other findings arising from the original proceedings

Where an appellate authority proposes to take a position that increases the taxpayer's liability, the procedural requirements become critical.

A business should therefore carefully examine not only the final demand but also how the appellate authority arrived at the enhanced liability.

Was the issue part of the original proceedings?

Was the taxpayer given an opportunity to respond?

Was the required notice issued?

Was the enhancement made within the authority granted by Section 107(11)?

These questions can become important in determining whether an appellate order is legally sustainable.

The Bigger Lesson for GST Appeals

The Saudi Arabian Airlines judgment provides an interesting reminder that exercising a statutory remedy should not automatically become a reason for suffering a new adverse consequence.

But GST has its own statutory framework.

Section 107(11) specifically contemplates certain forms of enhancement while also requiring procedural safeguards. Therefore, the practical GST question is not simply whether an appeal can make a taxpayer's position worse.

It is whether the proposed enhancement has a valid statutory basis and whether the authority has followed the procedure prescribed by law.

For taxpayers and professionals handling GST litigation, this distinction matters.

An appeal is a legal remedy and when the liability changes during that process, the source of that change and the procedure followed can be just as important as the amount itself.