What is IPC Section 377?
IPC Section 377 is titled "Unnatural offences" and, as originally enacted, punished voluntary carnal intercourse against the order of nature with any man, woman, or animal — interpreted by courts to cover penetrative acts other than penile-vaginal intercourse. Section 377 sits within Chapter XVI of the IPC ("Of Offences Affecting the Human Body").
The legal position of this section changed fundamentally through two Supreme Court decisions. In Suresh Kumar Koushal v. Naz Foundation (2013), the Supreme Court had upheld the constitutional validity of Section 377. This was reversed in the landmark 2018 judgment of Navtej Singh Johar v. Union of India, where a five-judge Constitution Bench unanimously held that Section 377, insofar as it criminalised consensual sexual conduct between adults in private, was unconstitutional and violated Articles 14, 15, 19 and 21 of the Constitution. Consent — and the age and capacity to give it — is now the decisive factor in whether conduct under this section is criminal at all.
Important Update: IPC to BNS Transition
With effect from 1 July 2024, the Indian Penal Code has been replaced by the Bharatiya Nyaya Sanhita (BNS), 2023 for offences committed on or after that date. Unlike most IPC provisions, Section 377 has no corresponding provision in the BNS — it has been omitted altogether. This has been flagged by legal commentators as a significant gap, since Section 377 was often the only available provision to prosecute non-consensual sexual acts against adult men, transgender persons, and cases of bestiality, none of which are separately covered elsewhere in the BNS. FIRs registered before 1 July 2024 continue to be tried under IPC 377; for incidents after that date, the availability of a comparable remedy needs to be confirmed with a lawyer on the specific facts.
Legal Provision — Text of Section 377 IPC
Following Navtej Johar, courts read this provision as applying to (i) non-consensual carnal intercourse with an adult, (ii) all acts of carnal intercourse with a minor (regardless of any purported consent), and (iii) acts of bestiality. It no longer applies to private, consensual acts between adults, irrespective of gender or sexual orientation.
Punishment Under Section 377
| Imprisonment | Imprisonment for life, or imprisonment of either description (simple or rigorous) for a term which may extend to 10 years |
|---|---|
| Fine | No fixed limit — decided by the court based on the facts of the case |
| Nature of Offence | Cognizable — police can register an FIR and investigate/arrest without prior court order |
| Bailable / Non-Bailable | Non-bailable — bail is not a matter of right and must be applied for before the court |
| Compoundable | Not compoundable under any circumstances |
| Triable By | Magistrate of the First Class |
| Limitation Period | None — being punishable with more than 3 years' imprisonment, there is no limitation period under Section 468 CrPC |
Where the victim is a minor, offences of this nature are more commonly prosecuted today under the Protection of Children from Sexual Offences (POCSO) Act, 2012, which carries its own, generally more stringent, sentencing framework and specialised courts. Section 377 may still be invoked alongside POCSO or other provisions depending on the facts and the date of the offence.
Key Ingredients / Essential Elements
For a conviction under Section 377 as it now applies, the prosecution must prove each of the following elements beyond reasonable doubt:
Voluntary carnal intercourse
The act must be one of carnal (sexual) intercourse, done voluntarily by the accused — courts have held that some degree of penetration is sufficient to constitute the act.
"Against the order of nature"
Interpreted by courts to mean penetrative acts other than penile-vaginal intercourse, including penile-anal and penile-oral intercourse, and intercourse with an animal.
With any man, woman or animal
The provision is gender-neutral as to the victim — it applies irrespective of whether the other party is a man, a woman, or an animal.
Absence of valid consent (for offences against adults)
Since Navtej Johar, the presence of free, informed consent between adults takes the conduct outside the scope of this section entirely. Absence of consent, use of force, fraud, or incapacity to consent is essential where the victim is an adult.
Minority of the victim removes the relevance of consent
Where the victim is below the age of 18, purported consent is legally irrelevant, and the act attracts liability under Section 377 and/or the POCSO Act regardless of any claim of consent.
What Should You Do — For Victims and For the Accused
Section 377 cases today typically arise in one of a few situations: a non-consensual sexual assault against an adult man or transgender person, an offence against a minor, an act of bestiality, or historical allegations from before 2018 that may now need re-examination in light of Navtej Johar. What you should do next depends entirely on which side you're on.
If You Are a Victim of a Non-Consensual Act
- Reach a place of safety and, where there is any physical injury, seek medical attention promptly and request a Medico-Legal Certificate (MLC).
- Preserve any physical or digital evidence — clothing, messages, call records, or CCTV footage from the location of the incident.
- File a written complaint at the local police station describing what happened; since the offence is cognizable, police are required to register an FIR.
- If the victim is a minor, ensure the complaint is filed with reference to the POCSO Act as well, so the case is handled by the appropriate specialised authorities and courts.
- If police are reluctant to register the complaint, approach the Superintendent of Police in writing or move the jurisdictional Magistrate under Section 156(3)/200 CrPC (now BNSS).
- Engage a criminal lawyer early to help navigate the FIR, evidence collection, and any parallel remedies that may apply on the facts of your case.
If an FIR / Complaint Is Filed Against You
- Do not ignore a police notice or summons — non-appearance can lead to a non-bailable warrant.
- Do not make statements to the police without a lawyer present; anything you say can be used as evidence.
- If the allegation concerns a private, consensual act between adults, ensure your lawyer raises the binding position laid down in Navtej Singh Johar v. Union of India (2018) at the earliest possible stage.
- Apply for anticipatory bail under Section 438 CrPC (now Section 482 BNSS) before arrest if you anticipate one.
- Gather any evidence relevant to consent, age, and the actual sequence of events, since these are typically the central contested issues in such cases.
- Explore quashing of the FIR under Section 482 CrPC (now Section 528 BNSS) before the High Court where the allegations, even if true, do not disclose an offence in view of the current legal position.
Consensual Conduct vs a Punishable Offence — The Most Important Distinction
The single most important legal distinction under Section 377 today is consent. Private, consensual sexual activity between adults, regardless of gender or orientation, is not a criminal offence and has not been since 2018. Complaints filed with the intent to harass, blackmail, or pressure a person over a consensual relationship between adults do not disclose an offence under this section, and are frequently a ground for quashing. Genuine non-consensual acts, acts against minors, and bestiality remain fully punishable.
FIR Filing & Bail Process Under Section 377
Filing the Complaint / FIR
Since Section 377 is cognizable, the police are legally bound to register an FIR on a complaint disclosing a non-consensual act, an act against a minor, or bestiality. If they refuse, the complainant can approach the Superintendent of Police in writing, or move the Magistrate under Section 156(3) CrPC/BNSS.
Investigation
The Investigating Officer records statements, arranges medical examination where relevant, collects documentary/digital evidence, and may arrest the accused, seeking police or judicial custody remand from the Magistrate as needed.
Bail Application
Being non-bailable, bail is not automatic. The accused may apply for anticipatory bail before arrest, or regular bail after arrest, before the Sessions Court or High Court, depending on the stage and the facts alleged.
Chargesheet & Trial
On completion of investigation, a chargesheet is filed before the Magistrate. If the court finds sufficient material, charges are framed and the trial proceeds with evidence and cross-examination.
Quashing (Where Applicable)
Where the allegations concern consensual conduct between adults, or otherwise do not disclose an offence, the accused may approach the High Court under its inherent powers to have the FIR or proceedings quashed at an early stage.
Important / Landmark Cases on Section 377
The following judgments are frequently relied upon by both prosecution and defence lawyers in Section 377 matters. This is general legal information for awareness — always have a lawyer verify how a precedent applies to your specific facts.
Naz Foundation v. Government of NCT of Delhi (2009)
The Delhi High Court held that Section 377, insofar as it criminalised consensual sexual acts between adults in private, violated Articles 21, 14 and 15 of the Constitution.
Suresh Kumar Koushal v. Naz Foundation, (2014) 1 SCC 1
The Supreme Court set aside the Delhi High Court's ruling in Naz Foundation and restored the full force of Section 377, holding that only Parliament could amend or repeal the provision.
Navtej Singh Johar v. Union of India, (2018) 10 SCC 1
A five-judge Constitution Bench unanimously held that Section 377, to the extent it criminalised consensual sexual conduct between adults in private, was unconstitutional, overruling Suresh Kumar Koushal.
National Legal Services Authority (NALSA) v. Union of India, (2014) 5 SCC 438
The Supreme Court recognised the right of transgender persons to self-identify their gender, laying important groundwork for later jurisprudence on sexual orientation and gender identity, including Navtej Johar.
Chhattisgarh High Court — Marital Exception Extended to Section 377
The Chhattisgarh High Court held that the marital exception recognised under Section 375 (rape) also extends to acts falling under Section 377 between spouses, in the course of an appeal against a conviction.