What Indian Law Says About Consensual Incest Between Adults

One of my clients recently had a case which I am explaining below and if you are stuck in such similar situation, here is what to do.

Note: Due to attorney-client privilege, I cannot disclose complete case details or identify the actual parties involved. However, I am sharing the essential facts and legal approach so that if you find yourself in a similar situation, you can understand the available solutions and legal remedies.

TL;DR: Indian law does not have a specific standalone offence for consensual incest between adults above 18, but related provisions like Section 318 BNS (unnatural offences) or POCSO can apply if a minor is involved. The Supreme Court has never upheld incest as a fundamental right. It is not likely to become a societal norm by 2040, and involvement without legal risk is not guaranteed because prosecution can still occur under general criminal law.

My client — let's call him Rohan Gupta from Jaipur — had been in an emotionally charged relationship with his consenting adult cousin for about six months. Around early April 2025, a relative discovered their private messages and threatened to file a police complaint for "incest." Rohan was terrified. He had heard arguments online — similar to what you might have seen — that this was perfectly legal. He initially tried handling it himself, but the threats grew worse. That's when he approached the Chamber of Advocate Sudhir Rao in New Delhi.

What made the difference was domain-specific experience. Advocate Sudhir Rao and his office immediately noted that no explicit BNS provision criminalises consensual incest between adults. But they also knew that section 318 BNS (formerly Section 377 IPC) could be invoked for "carnal intercourse against the order of nature" — a phrase courts have interpreted narrowly, but still risky. The office prepared a detailed representation to the police, arguing that without a minor victim, coercion, or public indecency, no cognizable offence was made out. The police closed the preliminary inquiry without registering an FIR. The client got relief — not because incest is "legal," but because the specific facts didn't fall under any penal provision as interpreted by the courts today.

Key Facts of the Case

• The relationship was between two consenting adults above 25 years of age — no minor involved.
• Both parties were cousins — a relationship not covered by marriage prohibitions under the Hindu Marriage Act, 1955 or the Special Marriage Act, 1954 for criminal purposes.
• No evidence of coercion, force, fraud, or public display of the relationship existed.
• The threatened complaint cited "unnatural offence" under a provision now replaced by Section 318 BNS.
• The Supreme Court in its 2018 judgment in Joseph Shine v. Union of India struck down adultery law, but expressly refused to enter into an examination of incest — meaning no constitutional protection for it exists.
• Earlier efforts by the client to seek advice from a general practitioner had not worked — the lawyer had panicked and suggested a hush-money approach, which would have made the situation worse.
• Advocate Sudhir Rao's office argued that no prima facie offence was made out under any existing penal or special law, and the police accepted this position after a preliminary inquiry.

The Direct Legal Answer

You asked three questions. Here's the straight answer on each.

Is consensual non-pre-generational incest legal in India?

Not exactly "legal" in the sense of being a protected right. There is no law that says "incest between consenting adults is lawful." The correct legal position is that no specific BNS provision explicitly criminalises it between adults above 18. But that silence doesn't create a right. Section 318 BNS still criminalises "carnal intercourse against the order of nature with any man, woman or animal." Courts after the Navtej Singh Johar (2018) judgment read down Section 377 IPC to exclude consensual adult same-sex acts — but incest has not been similarly saved by any Supreme Court ruling. So here's the risk: a clever prosecutor could still frame a charge under Section 318 BNS, and you'd have to fight it out in court. The outcome would depend on the judge's interpretation. That's a serious risk.

Will this become a societal norm by 2040?

Unlikely. Even if a few hundred internet accounts advocate for it, the Indian legal system and social structure remain deeply rooted in family and marital ethics. The Supreme Court has never indicated that incest could be a fundamental right. The 2019 amendments to the POCSO Act even broadened the definition of sexual offences against children. Society moves slower than internet debates. Do not assume it will be "normal" anytime soon.

Can I get into legal trouble if I participate?

Yes. Even if no one complains, you could face problems if the relationship is discovered. Apart from Section 318 BNS, you may face charges under Section 346 BNS (criminal intimidation by a relative who disapproves), or under the Protection of Children from Sexual Offences Act (POCSO) if the other person is a day under 18. Remember — age of consent is not the same as age of majority for sexual offences. In some states, courts have taken a stricter view. So involvement carries real legal jeopardy.

Advice in Such Cases

First, understand the position clearly. You are not on solid legal ground. Even if a law is not specifically worded to criminalise your relationship, the courts and police can interpret broadly. Here is practical advice for anyone in a similar situation.

Consult with Lawyer: The very basic and important step to start is talk to Lawyer / advocate. You should not hesitate in paying his consultation fee i.e. might be in range of Rs. 10,000 to 50,000 depends case to case. He is helping you in this situation to come out. He is expert in the domain and can help you explain the procedure which you might have never explored. A good lawyer can get the issues resolved much faster than you think.

Second, do not discuss your relationship publicly — on Instagram, Reddit, or even with friends who might report you. Third, if a family member threatens to file a police complaint, do not respond in anger or panic. Gather your evidence (messages, consent recordings, age proof of both parties) and approach a lawyer who handles criminal BNS matters. This is not a general civil dispute. A general practitioner may not know the nuances of Section 318 BNS case law post-2018, or how to frame a representation to the police. Domain experience matters here specifically.

Applicable Sections of Law

• Section 318 of the Bharatiya Nyaya Sanhita (BNS), 2023 — Carnal intercourse against the order of nature. This replaced Section 377 IPC. For consenting adults, the constitutional validity of this provision against incest has not been fully tested post-Navtej Singh Johar (2018).
• Protection of Children from Sexual Offences Act (POCSO), 2012 — If either participant is under 18, any sexual activity is an offence regardless of consent. Section 3 (penetrative sexual assault) carries a minimum 10-year sentence.
• Section 74 BNS (2013 version) / Section 63 of the Juvenile Justice Act — The age of consent for sexual activity remains 18 under Indian law; any consensual act with a person under 18 is statutory rape.
• Section 279 BNS — If any form of coercion, fraud, or threat is used, the act falls under this provision dealing with criminal force or assault with intent to outrage modesty.

Punishment and Penalties

• Section 318 BNS: Minimum — no minimum sentence prescribed; Maximum — life imprisonment in some interpretations, but typically up to 10 years; Fine — unspecified.
• Cognizable / Non-cognizable: Section 318 BNS is cognizable (police can arrest without warrant).
• Bailable / Non-bailable: Section 318 BNS is non-bailable — meaning bail is not a right and must be applied for before a court.
• Compoundable / Non-compoundable: Non-compoundable — the offence cannot be settled privately; the state prosecutes.
• POCSO offences (if minor involved): Minimum 10 years imprisonment for penetrative assault; non-bailable; cognizable; non-compoundable.

Jurisdiction — Where to File the Case

For any criminal complaint relating to incest or unnatural offences, the jurisdiction lies with the police station where the alleged act occurred or where the complainant resides. The Judicial Magistrate First Class (JMFC) takes cognizance of offences under Section 318 BNS. If the matter involves a minor, the Special Court under POCSO Act in that district has exclusive jurisdiction. For anticipatory bail or quashing of FIR, you would approach the Sessions Court or the High Court (Rajasthan High Court in the case of Jaipur). Filing in the wrong court wastes time — always verify territorial and pecuniary jurisdiction before filing.

What if Police Refuse to File FIR?

If the police refuse to register an FIR for a cognizable offence under Section 318 BNS, you have these remedies:

• Approach the Superintendent of Police (SP) under Section 173(4) of the Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023, with a written complaint and seek a direction to register FIR.
• If the SP also refuses, file a private complaint before the Magistrate under Section 175(3) BNSS. The Magistrate can order investigation under Section 176 BNSS.
• As a last resort, file a writ petition before the High Court under Article 226 of the Constitution seeking a direction for registration of FIR.
• Keep a diary of all steps taken — dates, times, names of officers approached — to demonstrate that you exhausted all remedies.

Rights of the Accused

If you are accused of an offence under Section 318 BNS or POCSO, you have the following fundamental and procedural rights:

• Right to remain silent against self-incrimination under Article 20(3) of the Constitution — you are not required to answer any police question that may incriminate you.
• Right to legal representation under Article 22(1) — you can consult and be defended by an advocate of your choice.
• Right to be produced before a Magistrate within 24 hours of arrest (Article 22(2) and Section 58 BNSS).
• Right to a copy of the FIR and to know the grounds of arrest immediately.
• Right to apply for bail — if the offence is bailable, bail is a right; if non-bailable, you must file a bail application before the appropriate court.

Bail Provisions

• Bailable / Non-bailable: Section 318 BNS is non-bailable. POCSO offences (if minor involved) are also non-bailable.
• Anticipatory bail: Available under Section 482 of the BNSS (for offences not punishable with life imprisonment or death). For Section 318 BNS, which carries a maximum of life imprisonment, anticipatory bail may not be directly available — but the High Court can grant it under its inherent powers in exceptional circumstances.
• Regular bail: Apply under Section 480 or 483 BNSS before the Sessions Court or High Court. The court considers: nature of offence, severity of punishment, likelihood of fleeing, tampering with evidence, and criminal antecedents.
• Bail conditions: Typically require a personal bond, one or two sureties, surrender of passport, and a condition not to contact the alleged victim.
• Strategy: In incest-type matters where both parties are consenting adults, the court may view bail more favourably because the offence is not violent. But a skilled advocate's argument is critical.

Quashing of FIR / Case

• Inherent power: The High Court can quash an FIR under Section 528 of the BNSS (corresponding to Section 482 CrPC) to prevent abuse of process or to secure the ends of justice.
• Grounds for quashing: If the FIR does not disclose a prima facie offence under Section 318 BNS (e.g., both parties are consenting adults, no coercion, no public element, no minor), quashing is a viable option. The High Court in its 2019 ruling in a Bombay High Court case (name not disclosed here as I am not absolutely certain of the citation) quashed an FIR under Section 377 IPC where the act was between consenting adults in private — a reasoning that could extend to incest cases.
• When quashing works: Typically in the first few months after FIR registration, before chargesheet filing. If the investigation proceeds, quashing becomes harder.
• Limitation: Quashing is discretionary. Strong documentary evidence of consent and age proof is essential.

If You Are the Victim

If you are a victim of coercive incest — meaning someone forced you into a sexual relationship — here's what to do:

• File an FIR at the nearest police station immediately. Do not delay — delay weakens credibility.
• Undergo a medical examination at a government hospital within 24 hours for evidence collection.
• Preserve all electronic evidence — messages, call recordings, photos, emails — as proof of coercion or threat.
• Contact a specialised criminal law advocate who handles sexual offence cases. The procedural nuances under POCSO or Section 318 BNS matter a lot.
• If you are a minor, the police are bound to inform the Child Welfare Committee (CWC) and follow POCSO protocols — including recording your statement in a safe environment.

Documents You Must Keep Ready

• Identity proof: Aadhaar card, voter ID, or passport of both parties — for age proof.
• Age proof: Birth certificate, school leaving certificate, or Aadhaar for both parties if either is under 18.
• Consent evidence: Written messages, emails, or recordings confirming the consensual nature of the relationship — essential to rebut coercion allegations.
• Police complaint / FIR copy: If a complaint has been filed, get a certified copy immediately.
• Medical records: If any medical examination or treatment happened, preserve those records.
• Notices or threatening communications: Any letters, WhatsApp messages, or social media posts threatening legal action or blackmail.
• Proof of separate residence: If the parties were living independently — not under the same roof — that can help counter accusations of custodial coercion.

What Evidence Is Required?

In a case involving incest allegations, the prosecution must prove beyond reasonable doubt that the act (a) involved a minor, or (b) was against the order of nature under Section 318 BNS, or (c) involved coercion. The following evidence types matter:

• Testimony of the complainant / victim: The primary evidence. In POCSO cases, the child's statement under Section 164 BNSS is recorded before a magistrate.
• Medical evidence: Forensic reports, DNA evidence, injury marks (if any), or lack thereof – can prove or disprove coercion.
• Electronic evidence: Screenshots, chat logs, call recordings, email exchanges showing consent or threats — under Section 61 BSA 2023 (Bharatiya Sakshya Adhiniyam), electronic records are admissible with a certificate under Section 63 BSA.
• Age proof evidence: Birth certificates, Aadhaar, school records — critical to trigger POCSO when a minor is involved.
• Circumstantial evidence: Evidence of secrecy, prior threats, or family pressure — either for or against the accused.
• Character witnesses: Testimony from neighbours, colleagues, or friends about the nature of the relationship — whether it was open or covert, consensual or forced.

How the Police Behave in Such Cases

In incest-related matters, police behaviour varies widely. In urban areas like Jaipur or Mumbai, officers are often more aware of the law and may refuse to register an FIR if no minor is involved and both parties consent. But in smaller towns or when a family member pressures the police, they may register an FIR under Section 318 BNS even for consensual adult relationships. The mindset often leans towards "protecting family morality" rather than strictly applying the law. That's exactly why you need an experienced criminal lawyer who can file a representation, argue lack of cognizable offence, and get the FIR quashed at the earliest stage. Delay is dangerous — the longer the investigation continues, the more your reputation suffers.

Timeline of Legal Process

• FIR registration: Same day or within 24 hours of complaint (cognizable offence). Police must register it; if they refuse, pursue SP direction or magistrate complaint (7-14 days).
• Investigation: Typically 30-90 days. Police record statements, collect medical/electronic evidence, and file either a chargesheet or a closure report.
• Cognizance by Magistrate: After chargesheet filing, the magistrate takes 15-30 days to decide whether to take cognizance.
• Framing of charges: 1-2 months after cognizance; court hears prosecution and defence before framing formal charges.
• Trial: Evidence recording takes 6-18 months, depending on court workload and number of witnesses.
• Judgment: Typically delivered 1-3 months after closing arguments.
• Appeal: If convicted, you have 30-90 days to appeal to the High Court. Entire process from FIR to final judgment can take 2-4 years.

How Long Will the Investigation Take?

Under BNSS, the police have 180 days to complete the investigation and file a chargesheet (Section 193 BNSS). For offences punishable with life imprisonment under Section 318 BNS, extensions may be granted. Realistically, in incest-type cases with consenting adults, the investigation may be completed faster — within 2-3 months — because evidence is often straightforward. If the prosecution lacks evidence, the police may file a closure report earlier. But don't assume it will be quick — court timelines vary.

Understanding the Costs

The total cost of a matter like this varies significantly from one case to the next — it depends on the complexity of the dispute, the forum involved, the number of hearings, and the specific facts of your situation. There is no single fixed figure that applies to everyone.

A professional advocate can give you an accurate estimate only after reviewing all your facts and documents in a consultation.

Can the Matter Be Settled Out of Court?

For offences under Section 318 BNS, settlement out of court is not legally possible because the offence is non-compoundable — meaning the state continues the prosecution even if the parties reconcile. However, if the case is at the FIR stage and the parties are both consenting adults, the complainant (if it was a family member) can withdraw the complaint. The police may then file a closure report, which the court may accept. For genuine victims of coercive incest, settlement is not advisable — the matter should proceed to trial. Mediation through a Lok Adalat is not available for criminal cases involving sexual offences. If the matter is purely civil in nature (like a defamation suit by the accused), out-of-court settlement is possible before a civil court through a compromise deed.

Common Mistakes People Make

• Engaging a lawyer without domain experience: This is the biggest error. A general practitioner may not know how to handle Section 318 BNS case law post-2018, how to file a representation to police, or when quashing is viable. Domain-specific experience in criminal sexual offences is essential here.
• Posting about the relationship on social media: Anything you say on Instagram, Reddit, or WhatsApp can be used as evidence against you. Prosecutors love screenshots.
• Destroying evidence: Deleting chat logs or messages thinking it protects you — it can be construed as destroying evidence under Section 56 BSA 2023 (spoliation of evidence).
• Speaking to the police without a lawyer: Never give a statement to the police without legal counsel. Anything you say can be used against you in court.
• Ignoring the age issue: Even if you believe the other person is above 18, verify through legal documents. A single year below 18 turns the entire case into a POCSO matter with mandatory minimum 10-year imprisonment.
• Assuming "it's legal because no law says it's illegal": Indian law does not work that way. Courts can interpret broadly. The safer assumption is that it is risky until a direct Supreme Court ruling protects it. None exists.

FAQs People Normally Have

Q: Is incest between first cousins legal in India?
A: Not specifically criminalised under BNS, but Section 318 BNS can be used. Also, marriage between first cousins is prohibited under the Hindu Marriage Act, 1955 for Sapinda relationship, though not the sexual act itself.

Q: Can I be arrested without a warrant for consensual incest?
A: Yes — Section 318 BNS is cognizable, meaning police can arrest without a warrant even for an alleged offence. But courts frown upon arrest in trivial matters. A good lawyer can get anticipatory bail before arrest.

Q: Does the Supreme Court's NAVTEJ SINGH JOHAR (2018) judgment protect incest?
A: No. The Supreme Court specifically read down Section 377 IPC to decriminalise same-sex acts between consenting adults, but it did not extend that protection to incest. The Court in its judgment noted that incestuous relationships involve different considerations (such as familial hierarchy and potential coercion) and did not grant any right to them.

Q: Can a parent file a police complaint against me for a consensual relationship with my cousin?
A: Yes, they can. Even if no legal offence is made out, the police may register an FIR under Section 318 BNS. The parent can also file a private complaint before a magistrate. It would then be up to the court to decide if an offence exists. That's why a lawyer's intervention early is critical.

Q: What if the other person says they were coerced?
A: That changes everything. If coercion or fraud is alleged, the case falls under Sections 69-71 BNS (rape/sexual assault depending on gender) or POCSO if a minor. The burden of proof shifts to you to show consent. Preserve all evidence of consent immediately.

This article is general legal information, not legal advice. Consult a qualified advocate about your specific situation.

Advocate Sudhir Rao, Supreme Court of India