Definition
Having performed its office.
Authority that has exhausted its powers and cannot revisit the decision.
Etymology & Origin
From Latin 'functus' (past participle of 'fungi', to perform or execute a function) and 'officio' (ablative of 'officium', office, duty, function). The phrase means 'having performed its office' or 'having discharged its function.' In law, it describes an official or authority that has exhausted its jurisdiction by finally deciding a matter — once the function has been performed, the authority has no further power to revisit or alter the decision.
Full Legal Analysis
Functus officio — 'having performed its function' — is the principle that once a court, tribunal, arbitrator, or quasi-judicial authority has finally decided a matter and made its order or award, its jurisdiction over that matter is exhausted. It cannot recall, revise, or modify its decision except to correct a clerical or typographical error. The authority has performed its office and is spent — its mandate is fulfilled. The principle is a corollary of the finality of judicial proceedings and is essential to legal certainty.
The doctrine applies across the full range of judicial and quasi-judicial authorities in Indian law. A civil court becomes functus officio in relation to a suit once it has passed the final decree — it cannot set aside or modify the decree on its own motion (except for clerical corrections or through review under Order XLVII CPC). An arbitral tribunal becomes functus officio once the final award is made — it cannot reopen the merits of its decision. An administrative tribunal or statutory authority becomes functus officio once it has issued its final order — it cannot recall and reconsider it without statutory power to do so.
In civil procedure, the scope of a court's power after passing a decree is carefully circumscribed. A civil court may, after passing a final decree: (1) correct clerical or arithmetical errors under Section 152 CPC; (2) grant review of the judgment under Order XLVII on specified grounds (discovery of new evidence, error apparent on the face of the record); (3) recall an ex parte decree on the defendant's application under Order IX Rule 13. These are exceptions, not the rule — the court is generally functus officio once the decree is signed.
The Supreme Court held that once a tribunal has given its final award or order, it becomes functus officio and has no jurisdiction to recall or modify the award. The only exceptions are where the statute itself confers a power of review or modification, or where the award contains a clerical error that does not change its substance. A tribunal cannot, under the guise of correcting an error, reopen the merits of its decision and substitute a different result — that would exceed its residual jurisdiction.
The functus officio doctrine has specific significance in constitutional writ proceedings. Once a High Court or the Supreme Court has dismissed a writ petition, it becomes functus officio in relation to that petition — a second writ petition on the same facts and raising the same grounds is barred by constructive res judicata. However, if new facts arise after the dismissal, a fresh petition may be filed — the earlier dismissal does not permanently foreclose the petitioner's rights if the factual or legal landscape has changed.
For advocates, the functus officio doctrine sets a clear boundary: once an authority has finally decided a matter, the remedy for an aggrieved party is appeal or revision, not a request to the same authority to reconsider. Attempting to persuade a court or tribunal to revisit a final order is not merely procedurally ineffective — it may result in a cost order for abuse of process. The appropriate forum for challenging a final order must be identified and the correct time limits for appeal or revision must be scrupulously observed.
This Term in Indian Statutes
Code of Civil Procedure, 1908, 1908
"Clerical or arithmetical mistakes in judgments, decrees or orders, or errors arising therein from any accidental slip or omission, may at any time be corrected by the Court either of its own motion or on the application of any of the parties."
Limited post-decree power of court — only clerical corrections permitted after passing decree; all other modifications render court functus officio
