Adjudication Strategy Matters: Weak Grounds Cannot Be Repaired Later

Do you think tax litigation is often won or lost at the appellate stage? If yes, the recent CESTAT, New Delhi Miscellaneous Order No 50224-50225/2026 dated 07th April 2026 [M/s. EMM AAR EL Construction Pvt. Ltd. Versus Commissioner, CGST & CX (Audit-II), New Delhi - 2026 (4) TMI 520 - CESTAT NEW DELHI] decision may well be an eye opener. In fact, most cases are won or lost at stage of adjudication itself. Once the matter reaches the Tribunal, attempting to introduce new factual grounds may prove difficult.

A recent CESTAT order highlights why the foundation of a case must be laid carefully at the very beginning.

Tax litigation often evolves as it progresses. Fresh insights emerge, additional documents are discovered and new arguments become apparent. But can a taxpayer change the fundamental basis of its defense at the appellate stage?

A recent order of the CESTAT suggests that such attempts may not always succeed.

The Attempt to Change the Case

In a recent matter before the CESTAT, the appellant had originally defended the service tax demand on the basis that as a sub-contractor it was not liable because tax had already been paid by the main contractor.

However, when the matter reached the Tribunal, the appellant attempted to introduce a new argument altogether: that the activity performed by it actually constituted manufacture and therefore no service tax was payable at all.

Tribunal Refuses Permission

The Tribunal refused to permit the appellant to introduce this new ground.

It observed that the appellant had consistently taken one position during the entire adjudication process. At the Tribunal stage, it was now attempting to shift to an entirely different basis of defense.

Allowing such a change would amount to altering the nature of the dispute and filling gaps left during earlier proceedings.

The Key Legal Principle

The Tribunal reaffirmed an established principle of appellate law:

• Pure questions of law may be raised at any stage.
• Questions of fact requiring examination of evidence must first be raised before the lower authorities.

Since determining whether an activity amounts to manufacture involves factual examination, the Tribunal held that the ground could not be raised for the first time before it.

Relevance for GST Litigation

With the GST Appellate Tribunal expected to become operational, this ruling assumes practical importance.

Many taxpayers face demands where crucial evidence or arguments were not presented during adjudication. The temptation is often to strengthen the case at the appellate stage.

However, the Tribunal's order demonstrates that appellate proceedings are not meant to provide an opportunity to rebuild the case from scratch.

The Real Lesson

Tax litigation strategy must begin much earlier than the appellate stage.

The reply to the show cause notice and the submissions before the adjudicating authority must carefully:

• identify all possible legal grounds, and
• place all relevant evidence on record.

Once the case moves forward, the scope for altering the nature of the dispute becomes significantly limited.