The constitutional challenges to ITC conditions: what has been decided, and what is still open

Credit is a statutory entitlement, not a vested right. That single proposition has decided almost every challenge — and it has limits worth knowing.

The proposition that decides most challenges

In the pre GST regime the Supreme Court in Jayam and Company v. Assistant Commissioner and in ALD Automotive v. Commercial Tax Officer held that input tax credit is a benefit conferred by statute and that the legislature may impose conditions, including time limits, on its availment.

The GST courts have applied the same reasoning. Section 16(4), which imposed a time limit for availing credit, has been upheld by several High Courts on the footing that a condition attached to a statutory entitlement is not a deprivation of property.

Safari Retreats confirmed the position for Section 17(5). VKC Footsteps confirmed it for the refund formula in Rule 89(5). The pattern is consistent: the challenge to the existence of a restriction fails.

It follows that a petition drafted as a complaint about the harshness of a provision will fail. The successful petitions are drafted differently.

The four arguments that still work

Impossibility. Where compliance was rendered impossible by the machinery of the Act itself — a portal that would not accept the return, a form that did not exist, a facility that was unavailable — the courts have given relief. This is the reasoning behind the transitional credit line and the Filco direction.

Excess of delegation. A rule cannot travel beyond the section that authorises it, and a circular cannot supply a condition the statute does not contain. This is the most productive ground in GST, and it requires no constitutional argument at all.

Retrospectivity. A validating amendment is permissible in principle, but it cannot simply declare a concluded judicial determination to be wrong, and it must survive Article 14. This is the live question after the 2025 substitution in Section 17(5)(d).

Vicarious recovery. The condition in Section 16(2)(c) has been upheld, but its enforcement against a buyer who has done everything the law requires, without first proceeding against the supplier who collected the tax, has repeatedly been set aside. That is a challenge to the exercise of the power, not to its existence — and it succeeds far more often.

How to plead a credit challenge that survives the first hearing

Do not lead with Article 14 or Article 300A. Lead with the statute. Identify the exact provision, the exact condition, and the exact act or omission said to attract it.

Then plead compliance, with the record. A petition that asserts entitlement without annexing the invoice, the movement evidence and the payment trail will be sent to the adjudicating authority.

Then plead the specific defect: the rule exceeds the section, the circular exceeds the rule, the order exceeds the notice, or the condition was impossible to satisfy on facts pleaded with dates.

Keep the constitutional ground as the last ground, fully pleaded so that it is preserved, but not as the case.

Authorities relied on

What to do on Monday

1. Frame every credit challenge on the statute first, the delegation second, and the Constitution last.

2. Annex the compliance record to the petition; an assertion of entitlement without documents will be remitted to the adjudicating authority.

3. Where a retrospective amendment affects a concluded proceeding in your favour, preserve the point immediately rather than waiting for a demand.

4. Track the batch matters affecting your year and ensure your own ground of challenge is separately pleaded so you are not bound by another petitioner's record.

Questions we are asked on this

Is Section 16(4) still open to challenge?

The general challenge has failed in most High Courts, and the amnesty and the relaxations for specific years have taken much of the sting out of it. What survives is the impossibility argument on documented facts.

Can a retrospective amendment take away credit we won in court?

That is the live question. A validating law may change the basis of a decision, but it cannot simply set aside the decision, and the distinction is where the argument lies.

Is Article 300A of any use in a credit case?

Rarely as a primary ground, because credit is held not to be property in the required sense until it vests. It has more traction where the credit was in the ledger and was taken away.

What is the strongest ITC argument in practice?

That the rule or circular exceeds the section, and that the department has proceeded against the wrong person. Both are statutory arguments and neither requires a constitutional finding.

Should we join a batch petition or file our own?

Join for the common constitutional question and file your own on facts. A batch petition rarely carries your evidentiary record, and the relief you need is usually fact specific.

In this cluster

• Writ jurisdiction in GST: when the High Court will hear you
• Alternative remedy and the exceptions the courts have carved
• Challenging a notification, rule or circular as ultra vires
• Violation of natural justice as a ground for writ relief
• Jurisdictional error versus error within jurisdiction
• Interim protection: stay, no coercive steps and conditional orders
• Retrospective amendments and Article 14 challenges in GST
• Are GST Council recommendations binding? What Mohit Minerals settled, and how to use it
• Recovery during the pendency of proceedings: the limits of Sections 78 and 79

GST Insights is published by AMLEGALS for general information. Law stated as on 3 September 2026. Not advice on any particular set of facts; not an advertisement or a solicitation under Rule 36 of the Bar Council of India Rules. Readers with a question on their own facts may write to the GST practice of their own accord.