Difference Between SLP, Writ Petition, and Appeal: A Guide for Litigants
By Advocate Mamta Sharma
In my practice before the Supreme Court and various High Courts, one question clients frequently ask is:
“Should we file an SLP, a writ petition, or an appeal?”
These three remedies are powerful—but each serves a distinct purpose, has different entry-routes, and is governed by different principles.
A misunderstanding often leads to filing the wrong petition, causing delays and weakening the case. This article breaks down the difference between an SLP, a Writ Petition, and an Appeal, in simple language—but with the precision expected by litigants, young lawyers, and students.
- What Is a Writ Petition?
(Filed Under Article 226 before High Court or Article 32 before Supreme Court)
A writ petition is a constitutional remedy. It is available when:
- your fundamental rights (Article 14, 19, 21 etc.) are violated,
- a government authority acts arbitrarily,
- natural justice is denied,
- a public authority exceeds its jurisdiction, or
- there is no effective alternative remedy.
Where is it filed?
- High Court under Article 226
- Supreme Court under Article 32 (only for fundamental rights violations)
Against whom can it be filed?
Primarily against:
- Government authorities
- Public institutions / bodies performing state functions
- Statutory authorities (GST, Income Tax, Police, Universities, PSUs etc.)
Purpose of a Writ Petition
- To prevent injustice before it becomes irreversible
- To strike down illegal orders
- To enforce legal or fundamental rights
- To stop authorities from acting without jurisdiction
Examples from practice
- Challenging wrongful GST assessment or attachment
- Challenging illegal cancellation of admission / counselling errors
- Quashing arbitrary government orders
- Challenging illegal recruitment or transfer
- Criminal writs: quashing FIR, seeking protection, habeas corpus
When writ is preferred over appeal
When:
- the order is void for lack of jurisdiction
- natural justice is violated
- delay causes irreversible loss (education, recruitment, business)
- alternate remedy is not effective
- What Is an Appeal?
(A statutory right provided by an Act)
An appeal is not a constitutional remedy—it is a statutory remedy available only when the law provides it.
Where is it filed?
Depends on the statute:
- GST Appeals → First Appellate Authority / Tribunal / High Court
- Civil Appeals → District Court / High Court
- Service Law → Central Administrative Tribunal (CAT)
- Consumer Appeals → State/National Commissions
- Criminal Appeals → Sessions Court / High Court etc.
Key features of an Appeal
✔ A right, not a discretion
✔ The appellate court re-evaluates facts and law
✔ Evidence can be reviewed (unlike writs)
✔ Delay can sometimes be condoned
When litigants should prefer an appeal
- When the law provides a full appellate mechanism
- When factual disputes need adjudication
- When revision of evidence or reconsideration of findings is needed
Important distinction
Writ acts as judicial review.
Appeal acts as complete re-examination.
- What Is an SLP (Special Leave Petition)?
(Filed Under Article 136 before the Supreme Court)
An SLP is the most misunderstood remedy.
What is an SLP?
It is NOT an appeal as a matter of right.
It is a request for permission (leave) to appeal before the Supreme Court.
The Supreme Court decides:
- whether the matter involves substantial questions of law,
- whether there is grave injustice,
- whether the High Court’s decision is perverse or illegal.
When is SLP filed?
Against:
- Any order/judgment of any High Court or Tribunal
- Orders rejecting writ petitions, appeals, revisions, or review petitions
Typically within 90 days, with exceptions.
Key characteristics
✔ Discretionary remedy
✔ Invoked in “exceptional circumstances”
✔ Not a continuation of regular appeals
✔ SC intervenes sparingly
When does the Supreme Court grant SLP?
- When there is a miscarriage of justice
- Contradictory High Court judgments
- Matters involving national importance
- Serious constitutional or legal issues
- Unjustified denial of fundamental rights
When SLP is not entertained
- Pure factual disputes
- Routine personal employment disputes
- Matters already settled by established law
- When alternate remedies not exhausted
- Core Differences at a Glance
Feature | Writ Petition | Appeal | SLP |
Nature | Constitutional Remedy | Statutory Right | Discretionary Remedy |
Filed Before | High Court / Supreme Court | Authority defined by statute | Supreme Court |
Focus | Violation of rights, jurisdictional error | Review of facts & law | Grave injustice / substantial question |
Against | Public authorities | As per statute | Any order of High Court/Tribunal |
Admissibility | Court discretion, but broad | A matter of right | Highly selective |
Factual Review | Limited | Extensive | Very limited |
Purpose | Prevent injustice early | Correct errors | Correct rare miscarriages of justice |
- Which One Should a Litigant Choose? — Practical Guidance from My Experience
Choose a Writ Petition when:
- Time-sensitive matters (admissions, jobs, tenders)
- Natural justice violated
- Authority lacked jurisdiction
- Order is arbitrary
- No effective remedy available
Choose an Appeal when:
- Detailed re-appraisal of facts is required
- Law provides a complete appeal structure
- You want reconsideration of evidence, records, findings
Choose an SLP when:
- The High Court’s order is glaringly unjust
- There is substantial law involved
- National / legal significance exists
- No other remedy is viable
- Conclusion: A Wrong Filing Can Cost Precious Time
Understanding the distinction between these three remedies is essential.
A writ petition provides speed and constitutional protection. An appeal provides comprehensive review. An SLP provides correction of extraordinary injustice.
A well-advised litigant chooses the right forum at the right time—and avoids unnecessary procedural delays.