Litigation under India's GST system involves legal disputes between taxpayers and tax authorities concerning the interpretation, application, or enforcement of GST laws. Such disputes commonly arise from matters including tax liability, Input Tax Credit (ITC), classification of goods or services, valuation, refund claims, and imposition of penalties. Resolution follows a structured process, progressing through successive stages of adjudication, appeals before tribunals, and ultimately, the courts.

Common Triggers of GST Litigation
- Denial or Mismatch of Input Tax Credit (ITC): The most frequent cause of disputes stems from authorities disallowing ITC. This occurs due to discrepancies between buyer and supplier returns, delayed filings, or allegations of fraudulent invoicing. ITC is often blocked using Rule 86A, sometimes without proper procedural fairness.
- Incorrect Classification: Disputes regularly arise when taxpayers and authorities disagree on how to classify a good or service, which directly impacts the applicable GST rate or taxability.
- Discrepancies in GST Returns: Inconsistencies between different GST returns (like GSTR-1, GSTR-3B, and GSTR-2A) or mismatched e-way bill details frequently trigger scrutiny and legal action.
- Incorrect or Excessive Tax Demands: Taxpayers frequently appeal against demands for tax, interest, or penalties they deem to be unlawful, unjustified, or calculated in error.
- Procedural Lapses by Authorities: Litigation is often provoked by administrative actions such as the cancellation of GST registration without sufficient cause, or the passing of orders without granting the taxpayer a proper hearing.
- Rejection or Delay of Refunds: Legal disputes commonly result from the rejection, prolonged withholding, or improper processing of GST refund claims, especially for exporters and those involved in zero-rated supplies.
Regulatory and Procedural Issues
- Aggressive Tax Department Action: Increased issuance of show cause notices and audit objections, motivated by departmental revenue targets, has elevated the volume of litigation.
- Interpretational Differences Across States: Varying interpretations of GST law in different states have fuelled inconsistent adjudications and additional litigation.
Key Legal Provisions Involved
Section 16: Conditions for Claiming ITC
This section lists the mandatory requirements to be eligible for Input Tax Credit (ITC). A registered person must have a valid tax invoice, must have received the goods or services, and the supplier must have paid the corresponding tax to the government. The claimant must also have filed the requisite returns. Failure to meet these conditions or if the ITC falls under blocked categories results in its denial.
Rule 86A: Authority to Block ITC
Rule 86A grants the Commissioner or an authorized officer the power to temporarily block the ITC available in a taxpayer's electronic credit ledger. This action can be taken if there is a reasonable belief that the credit has been claimed fraudulently or is otherwise ineligible. The block is limited to the available credit balance and does not require a prior show-cause notice, though it must be supported by valid reasons.
Sections 73 & 74: Issuing Tax Demands
- Section 73 governs demands for tax that was not paid or was underpaid due to bona fide errors, without any element of fraud or intentional suppression of facts.
- Section 74 applies when there is evidence of fraud, willful misstatement, or suppression of facts with the intent to evade tax. Proceedings under this section carry a longer time limit for issuance of demands and attract higher penalties.
Section 132: Criminal Penalties for Serious Offenses
Section 132 defines criminal offenses and punishments for grave violations. These include issuing fake invoices, fraudulently availing or passing on ITC without any underlying supply, deliberate tax evasion, and falsifying records. Convictions can lead to imprisonment (from one to five years, based on the amount involved) along with fines.
Section 83: Provisional Attachment of Property
To safeguard government revenue during ongoing investigations or proceedings, Section 83 authorizes the Commissioner to provisionally attach a taxpayer's property, including bank accounts. This attachment is temporary, valid for an initial period of one year, and must follow due process, including a formal order and an opportunity for the taxpayer to object.
Refund rejections and delays
- Refusal or Partial Approval of Refunds: Refunds for exports, zero-rated supplies, or inverted duty structures are often denied or only partially sanctioned. Common grounds for this include discrepancies between supporting documents (such as shipping bills, GSTR-1, and the electronic credit ledger) or technical and procedural errors.
- Delayed Processing and Interest Disputes: Prolonged delays by authorities in processing and sanctioning legitimate refunds are a frequent source of conflict. This often leads to litigation over the subsequent non-payment or calculation of interest on these delayed refunds, compelling taxpayers to file appeals or writ petitions to secure their funds with due interest.
Compliance, e-way bills and registration
- Issues with E-Way Bills: The non-generation, incorrect documentation, or expiry of e-way bills frequently leads to the detention and seizure of goods and vehicles. This results in tax demands and penalties, which are commonly challenged through appeals and writ petitions.
- Compliance and Filing Errors: Non-compliance with basic GST obligations-such as late or non-filing of returns, tax shortfalls, failure to register when liable, and inconsistencies between GSTR-1, GSTR-3B, and e-way bill data-are pervasive triggers for show-cause notices issued under Sections 73 or 74.
- Cancellation of Registration: The arbitrary cancellation of GST registration without proper justification or a fair hearing has been heavily criticized by High Courts, which have likened such actions to the "economic death" of a business. This has prompted numerous writ petitions seeking restoration of the registration.
Emerging themes and systemic issues
- Tribunal Delays Driving Litigation: The prolonged non-establishment or delayed operationalization of GST Appellate Tribunals has left taxpayers without an effective statutory appeal forum. This has diverted a significant volume of appeals directly to the High Courts, substantially increasing writ based GST litigation.
- Evolving Grounds for Dispute: New areas of legal conflict are emerging, including non-compliance with mandatory e-invoicing, automated mismatch notices, assessment algorithms triggering risk flags, and the developing legal distinction between fraudulent intent and genuine errors. These issues are generating a growing body of fresh appeals and foundational test cases.
| Category | Primary Dispute | Status (Late 2025) |
| Gaming | 28% Tax on Face Value | Critical: Pending SC Final Hearing. |
| Real Estate | Tax on Development Rights | Stayed: SC stayed demands in Nov '25. |
| Input Credit | Supplier Retro Cancellation | Active: HC favoring compliant buyers. |
| Employment | Secondment/Expat Salaries | Favorable: Trend shifting to "No Tax." |
| Procedure | Arrest & Attachment | Regulated: SC set strict guidelines. |
