By S&S Co. Advocates & Solicitors · Published 28 October 2026 · Informational content, not legal advice: see our disclaimer
Couples who marry under the Special Marriage Act usually do it to avoid the formalities, or the restrictions, of a religious ceremony. What most of them never find out until much later, often at the worst possible time, is that the choice of ceremony can quietly change which law decides who inherits their property. A Hindu man who marries his Hindu partner at the local registrar's office instead of with a priest is not automatically opting out of Hindu succession law. But a Hindu who marries a Christian or a Muslim partner under the same Act may be opting into an entirely different regime without realising it.
This matters most when someone dies without a will. Families end up arguing not over the facts, which are usually clear, but over which statute even applies to those facts. Getting that threshold question wrong before approaching a court for a succession certificate or letters of administration can mean amending the petition midway, or worse, losing on a technical point after years of litigation.
The default rule: Section 21 sends you to the Indian Succession Act
Section 21 of the Special Marriage Act, 1954 lays down the starting position. Succession to the property of a person whose marriage is solemnised under the Act, and to the property of children born of that marriage, is governed by the Indian Succession Act, 1925. The provision makes this is so whatever the personal religion of the parties, overriding the rules that would otherwise apply to a Hindu, a Muslim, a Christian or anyone else marrying within their own community.
The drafting logic is straightforward enough. Parliament gave couples a secular, civil form of marriage precisely so that two people of different faiths, or no faith, could marry without either side having to convert. Having created that option, it then had to pick a succession law that did not privilege either spouse's religion, and the Indian Succession Act was the obvious neutral choice, since it already governs Christians, Parsis and anyone without a specific personal law of their own.
The practical effect for an inter-faith couple is real. A Hindu man who marries a Christian woman under the Special Marriage Act no longer has his property devolve under the Hindu Succession Act when he dies intestate. His widow and children instead inherit in the shares the Indian Succession Act prescribes, which differ in places from Hindu succession rules, particularly around the widow's share and the position of other relatives.
Section 21A: the carve-out for same-faith couples
Parliament revisited this in 1976 after the Law Commission pointed out an odd consequence of Section 21. Two Hindus who married each other under the Special Marriage Act, perhaps simply because they wanted a civil ceremony or belonged to the same prohibited degree under Hindu law, were being pushed out of Hindu succession law entirely, for no reason connected to their actual circumstances. The Marriage Laws (Amendment) Act, 1976 inserted Section 21A to fix this.
Section 21A provides that where a marriage under the Act is between two people who both profess the Hindu, Buddhist, Sikh or Jaina religion, Section 19 and Section 21 do not apply. Section 19 is the provision that would otherwise sever a Hindu coparcener's connection with his joint family on marrying under the Act; Section 21A disapplies that too, so a Hindu who marries another Hindu under the Act stays part of his Hindu undivided family in the way he would if he had married under Hindu rites.
The upshot is that two Hindus (using that word in the broad sense the Hindu Succession Act uses, covering Buddhists, Sikhs and Jains as well) who marry each other at the registrar's office are treated, for succession purposes, exactly as if they had married under the Hindu Marriage Act. The Hindu Succession Act, not the Indian Succession Act, decides who inherits. Mixed-faith couples get no such carve-out. If even one spouse professes a different religion, Section 21 continues to apply and the Indian Succession Act governs.
Why this is contested for Muslim spouses
The hardest cases involve a Muslim who marries under the Special Marriage Act. Section 21A does not cover Muslims, so Section 21 applies in the usual way and the Indian Succession Act governs succession to that person's property. That sounds like a clean answer, but it creates friction with Muslim personal law, which ordinarily caps what a testator can will away by bequest at one-third of the estate and otherwise distributes the rest by fixed Quranic shares.
Reported orders on this point have gone as far as holding, at least at an interim stage, that a Muslim married under the Special Marriage Act can bequeath his entire estate by will, since the one-third ceiling is a feature of Muslim personal law that the Indian Succession Act does not import. That is a significant departure from what the same person's family would ordinarily expect under Muslim inheritance rules, and it is not a settled, final position across every High Court. A related, separately litigated question is whether a will made by a Muslim who married under the Act must go through probate before an executor or legatee can act on it, since the Indian Succession Act's general probate requirements were historically understood to apply more broadly to wills than Muslim personal law's rules do.
Anyone in this situation, or advising a client in it, should treat this as an area to get a specific, current opinion on rather than assume either the Muslim personal law position or the plain Indian Succession Act position automatically wins. The exact wording of the marriage certificate, the domicile of the deceased and the particular High Court whose jurisdiction applies can all affect the answer.
What this means for intestate succession in practice
When a spouse married under the Special Marriage Act dies without a will, the first job for the family, or for the lawyer approached for a succession certificate, is to establish two things: whether both parties shared the same religion within the Section 21A list, and if not, which succession scheme under the Indian Succession Act applies.
If the deceased was Christian, or the marriage was interfaith and the Indian Succession Act applies, intestate succession typically follows the scheme in Part V of that Act. A widow or widower takes a defined share depending on whether there are surviving lineal descendants, and the rest passes to kindred in a specific order. These shares are not identical to what a Hindu widow would get under the Hindu Succession Act's Class I heirs scheme, so the choice of governing law can change not just procedure but the actual amount a surviving spouse or child receives.
Children of the marriage inherit under whichever law governs their parent's estate, following the same Section 21 and Section 21A logic. This occasionally surprises families where the parents' own religions differed from each other and also from how the children were raised, since the children's inheritance rights track the parent's succession regime, not the children's own professed faith.
Getting the paperwork right: succession certificates and petitions
A petition for a succession certificate, letters of administration or probate has to plead the correct governing law from the outset. Courts that process these petitions are not required to notice on their own that the deceased married under the Special Marriage Act and that this changes the applicable succession law; if the petition is drafted as though ordinary personal law applies, the error can surface only when an objection is filed, usually by a relative unhappy with their share under the law actually being invoked.
It helps to attach the marriage certificate issued under the Special Marriage Act to the petition papers and to state expressly which of Section 21 or Section 21A applies and why. Where the marriage was interfaith, naming the specific chapter of the Indian Succession Act being relied on, rather than simply citing the Act in general terms, heads off objections at the first hearing rather than at a later, more expensive stage.
Where there is any doubt about the religions of both spouses at the date of marriage, for instance where one spouse converted before or after the marriage, that fact needs to be pleaded and, ideally, supported by contemporaneous documents. Courts have had to decide these questions on the facts before them, and a bare assertion in the petition rarely survives a contest.
Planning around it: why a will still matters
None of this complexity disappears if the couple simply writes a will, but a will does remove most of the uncertainty. The Indian Succession Act's rules on testamentary capacity and execution apply to a will made by a person married under the Special Marriage Act regardless of which intestate succession scheme would otherwise govern them, so a validly executed will overrides the default scheme in almost every case.
Couples who marry under the Special Marriage Act specifically because they come from different religious backgrounds are often the ones who benefit most from writing wills promptly after the marriage, precisely because the interaction between Section 21 and their respective personal laws is the part of this area most likely to produce a dispute if left to intestate succession. A short, properly witnessed will naming an executor and setting out shares removes nearly all of the argument described above.
For same-faith couples protected by Section 21A, the stakes of getting this wrong are lower, since Hindu succession law will apply either way. Even so, a will remains useful wherever the couple wants to depart from the statutory shares, for instance to provide differently for a spouse, a minor child, or an ageing parent who would not otherwise qualify as an heir under the applicable scheme.
Frequently Asked Questions
I'm Hindu and married my Hindu partner under the Special Marriage Act. Does Hindu succession law still apply to us?
Yes. Section 21A of the Special Marriage Act specifically disapplies Section 21 where both spouses profess the Hindu, Buddhist, Sikh or Jaina religion. Succession to your property, and your spouse's, is governed by the Hindu Succession Act, exactly as if you had married under Hindu rites rather than at a registrar's office.
My spouse and I are from different religions and married under the Special Marriage Act. Which law decides who inherits if one of us dies without a will?
The Indian Succession Act, 1925 applies, under Section 21 of the Special Marriage Act. Neither spouse's personal succession law, whether Hindu, Muslim or another personal law, governs. The relevant scheme is the Indian Succession Act's rules for intestate succession, which differ in the shares given to a surviving spouse compared with Hindu or Muslim succession law.
Can a Muslim who married under the Special Marriage Act leave his entire estate by will, instead of the usual one-third limit?
Some reported orders have held, at least on an interim basis, that the one-third ceiling under Muslim personal law does not apply once the Indian Succession Act governs succession through Section 21. This is a contested, evolving area rather than a uniformly settled rule, so it needs a specific current opinion rather than a general assumption either way.
Does marrying under the Special Marriage Act affect my rights in my Hindu Undivided Family?
Only if your spouse is not Hindu, Buddhist, Sikh or Jain. Section 19 of the Act would otherwise treat you as having severed your connection with your joint family on marrying under the Act, but Section 21A removes that consequence for same-faith Hindu-law marriages. An interfaith marriage under the Act does trigger the severance under Section 19.
Should we still write a will if Section 21A means Hindu succession law applies to us anyway?
It is still worth doing, mainly to depart from the statutory shares where you want to, such as providing more for a spouse or a dependent parent who would not otherwise qualify as a Class I heir. A will removes any argument about which scheme applies and lets you decide the shares directly rather than leaving them to the default statute.
References & Further Reading
The provisions and rulings below were relied on for this guide. The position can change with amendments and later decisions, so check the current text and the latest case law before acting on any of it.
- Special Marriage Act, 1954, Section 19 (severance from joint family on marriage under the Act)
- Special Marriage Act, 1954, Section 21 (succession governed by the Indian Succession Act, 1925)
- Special Marriage Act, 1954, Section 21A (inserted by the Marriage Laws (Amendment) Act, 1976, disapplying Sections 19 and 21 where both parties profess the Hindu, Buddhist, Sikh or Jaina religion)
- Indian Succession Act, 1925, Part V (intestate succession for persons to whom the Act applies)
- Law Commission of India, 59th Report, recommendation underlying the 1976 insertion of Section 21A