Mandamus vs Certiorari: The Affirmative and the Corrective Writ Compared

Mandamus and certiorari are the two writs most often sought together and most often confused. Both lie against public authorities, both are issued under Articles 32 and 226, and both are supervisory rather than appellate. But they do opposite things. Certiorari looks backwards at a decision and destroys it; mandamus looks forwards at a duty and commands its performance. The difference runs through everything else: what the petitioner must establish, whether a decision needs to exist at all, what the court can order, and what happens after the writ issues. This topic sets out the comparison, the situations in which each is appropriate, and the cases where both are needed in the same petition.

1. The Essential Difference

Certiorari presupposes that something has been decided. Its subject is a determination, its object is to quash it, and its grounds are defects in that determination: want of jurisdiction, breach of natural justice, or an error of law apparent on the record. Once the decision is quashed, the position is as it was before, and the authority may decide again according to law.

Mandamus presupposes that something has not been done. Its subject is a duty, its object is to compel performance, and its grounds are a legal right in the petitioner answered by a corresponding public duty in the respondent which has been demanded and refused. Once the writ issues, the authority must act.

The clearest way to hold them apart is by what the petitioner complains of. A complaint that the authority decided wrongly points to certiorari; a complaint that the authority did not decide, or will not act, points to mandamus.

2. The Comparison

Basis	Mandamus	Certiorari
Function	Affirmative; commands performance	Corrective; quashes a decision
Subject	A public duty not performed	A determination already made
Precondition	A legal right in the petitioner and a corresponding duty in the respondent	A decision by a body with legal authority affecting rights
Demand and refusal	Ordinarily required before the petition	Not required; the decision itself is the grievance
Against whom	Any person or body owing a public duty, including private bodies discharging public functions	Courts, tribunals and authorities determining rights; not private bodies without public functions
Judicial character of the body	Not required; the duty may be purely administrative	Required in the older law; relaxed after A.K. Kraipak v. Union of India, (1969) 2 SCC 262
Grounds	Refusal or failure to perform, wrongful refusal to exercise a discretion, acting on irrelevant grounds	Jurisdiction, natural justice, error of law apparent on the record
Effect	The authority is commanded to act	The decision is quashed and ordinarily remitted
Contractual matters	Does not lie to enforce a purely contractual obligation	Does not arise; there is no determination to quash
Legislation	Cannot compel the making of a law or a rule	Does not lie against legislative action, which is challenged as ultra vires

3. What Mandamus Requires and Certiorari Does Not

The practical differences concentrate on the mandamus side, because mandamus asks the petitioner to establish two things certiorari does not: a legal right in himself, and a corresponding legal duty in the respondent.

📖 Bihar Eastern Gangetic Fishermen Co-operative Society Ltd. v. Sipahi Singh, (1977) 4 SCC 145

Facts: Fishery rights in a jalkar were in dispute. The respondent claimed a settlement in his favour, although no contract complying with Article 299 of the Constitution had been concluded, and obtained a writ of mandamus from the High Court on the basis of promissory estoppel. The society to which the State proposed to settle the rights appealed.

Held: The Supreme Court set aside the mandamus. It held that there is abundant authority for the proposition that a writ of mandamus can be granted only where there is a statutory duty imposed upon the officer concerned and there is a failure on the part of that officer to discharge the statutory obligation; the chief function of the writ is to compel performance of public duties prescribed by statute and to keep subordinate tribunals and officers within the limits of their jurisdiction. It follows that in order that mandamus may issue, it must be shown that there is a statute which imposes a legal duty and that the aggrieved party has a legal right under the statute to enforce its performance. In the case before it, no statutory duty had been shown and what was sought to be enforced was an obligation flowing from a contract that was itself not binding, so mandamus could not issue.

Ratio: Mandamus requires a legal duty imposed by law and a corresponding legal right in the petitioner to enforce it. It does not lie to enforce an obligation arising from a contract or from a claim with no statutory foundation.

📖 Mani Subrat Jain v. State of Haryana, (1977) 1 SCC 486

Facts: The petitioners, advocates and judicial officers, sought a writ of mandamus in connection with appointments to the post of District Judge, claiming that they ought to have been considered or appointed.

Held: The Supreme Court declined the writ. It held that a writ of mandamus can be granted only where the applicant establishes that he has a legal right in himself to the performance of a legal duty by the party against whom the writ is sought, and that such right must be subsisting on the date of the petition. There is no right in any person to be appointed to a public office, and a mandamus will not issue on the strength of a hope or an expectation of consideration where the law confers no right; the writ is not issued in a vacuum but to enforce a right that exists.

Ratio: The petitioner must show a subsisting legal right in himself. An expectation, a claim to be considered for an appointment, or a general grievance without a corresponding right will not sustain mandamus.

Certiorari asks neither question in that form. The petitioner needs to show that a decision affecting him was made by a body with legal authority and that it suffers from one of the recognised defects; he need not establish a subsisting right to any particular outcome, nor a duty owed to him personally, nor any demand and refusal.

4. Which Writ Fits the Complaint

The complaint	Appropriate remedy
The authority passed an order against me without hearing me	Certiorari
The authority has refused to decide my application at all	Mandamus
The authority rejected my application on a ground the statute does not permit	Certiorari, with mandamus to decide afresh
The authority wrongly believes it has no power to grant my request	Mandamus to exercise the discretion according to law
The authority has decided but refuses to give effect to its own decision	Mandamus
The order discloses an error of law on its face	Certiorari
The authority is not following its own published policy	Mandamus, supported by Article 14 and legitimate expectation
The authority is proceeding without jurisdiction and has not yet decided	Prohibition, not certiorari or mandamus
The order is bad and I am entitled to the consequential benefit	Certiorari to quash and mandamus for the consequential direction

5. Where Both Are Sought Together

The two writs are complementary, and a large proportion of administrative law petitions seek both. The typical pattern is certiorari to quash and mandamus to command: the impugned order is set aside, and the authority is directed to reconsider the matter according to law, to restore a licence, to release payment or to give effect to the decision that follows.

Where the facts admit of only one lawful conclusion, the court may combine the two more forcefully, quashing the order and directing the specific action that ought to have been taken, the course sanctioned in Comptroller and Auditor General of India v. K.S. Jagannathan, (1986) 2 SCC 679. Where the matter is genuinely open, the court quashes and remits, leaving the decision to the authority, because mandamus commands the exercise of power and not the result.

The choice of label rarely matters in India. Articles 32 and 226 empower the courts to issue directions and orders as well as writs in the nature of the five, so a petition drafted for one is routinely dealt with as the other where the substance requires, and the court commonly grants a composite relief that does not correspond neatly to any of the classical writs.

⚠ The two writs fail for different reasons

Because their preconditions differ, the same facts can defeat one and not the other. A petitioner who cannot show a legal right in himself loses on mandamus, as in Mani Subrat Jain, but may still obtain certiorari if an order was made against him unfairly, since certiorari protects against a bad decision rather than enforcing a right. Conversely a petitioner with a clear statutory right loses on certiorari where no decision exists to quash, and must proceed by mandamus. Identifying which writ a complaint belongs to is therefore not a matter of form: it determines what must be proved.

6. The Position in Summary

Certiorari presupposes a decision and destroys it; mandamus presupposes an omission and compels performance.
Mandamus requires a legal duty imposed by law and a corresponding legal right in the petitioner, together with a demand and refusal (Bihar Eastern Gangetic Fishermen Co-operative Society).
The petitioner must show a subsisting legal right in himself; an expectation or a claim to be considered for appointment does not suffice (Mani Subrat Jain).
Certiorari requires only a determination by a body with legal authority suffering from want of jurisdiction, breach of natural justice or an error of law apparent on the record.
The two are frequently combined, certiorari to quash and mandamus to command, and the Indian courts are not confined by the label since Articles 32 and 226 authorise directions and orders generally.

7. Related Topics and Provisions

Writ of Mandamus (Topic 108) and Writ of Certiorari (Topic 109): each remedy in detail.
Certiorari vs Prohibition (Topic 111): the other comparison in the writ family.
Five Constitutional Writs: A Comparative Study (Topic 114): all five compared together.
Locus Standi in Writ Proceedings (Topic 115): the requirement of a legal right and its relaxation.
Failure to Exercise Discretion (Topic 50): the default that mandamus corrects.
Constitution of India: Articles 32, 226, 227 and 299.