Case: Cheng Tze Tzuen (alias Zhong Zhixuan) v Dang Lan Anh [2026] SGCA 42
Court: Singapore Court of Appeal
Decision Date: 21 October 2026
Introduction
Can a marriage be declared void if it was entered into solely for immigration purposes? What happens if one spouse passes away and the surviving spouse claims a share of the deceased's estate, even though the couple never lived together?
These questions were considered by the Singapore Court of Appeal in Cheng Tze Tzuen v Dang Lan Anh [2026] SGCA 42.
In this significant decision, the Court of Appeal ruled by a majority that a marriage of convenience solemnised before 1 October 2016 cannot be declared void merely because it was a sham marriage.
The decision provides important clarification on the legal validity of marriages of convenience, the grounds for annulment under the Women's Charter 1961, and the potential inheritance consequences of such marriages.
Background of the Case
The case concerned a Singaporean man who married a Vietnamese woman on 26 January 2011.
The husband passed away on 8 January 2012 without leaving a will. His estate included a 14% share in an HDB flat, while he also left behind CPF monies.
Following his death, his son discovered that his father had been married to the Vietnamese woman.
The son believed that the marriage was not genuine and had been entered into for immigration purposes.
He relied on several circumstances to support his position:
The marriage was kept secret. The deceased had never informed his family members that he had remarried, and none of them attended the wedding.
The couple never lived together. Despite being married, the deceased continued residing with his sister.
There was no apparent marital relationship. There were no joint assets or evidence of regular communication between the spouses.
The wife was absent during the husband's illness. When the deceased was terminally ill with cancer, the wife did not visit or provide support.
The husband had financial difficulties. The son suspected that his father may have received payment for entering into the marriage, although this was not conclusively established.
The son also discovered that the wife had been deported from Singapore in 2011 for immigration offences.
As the deceased had died without a will, the wife stood to inherit half of his estate under Singapore's intestacy laws.
The son therefore commenced legal proceedings seeking a declaration that the marriage was void, which would exclude the wife from inheriting the deceased's estate.
What Did the High Court Decide?
The High Court accepted, on the available affidavit evidence, that the marriage was one of convenience.
However, the Court declined to declare the marriage void.
The reason was that the Women's Charter did not provide a legal basis to invalidate this particular marriage.
The marriage had taken place in 2011, before the statutory provisions specifically addressing marriages of convenience came into effect on 1 October 2016.
The son appealed against the High Court's decision.
What Did the Court of Appeal Decide?
On 21 October 2026, the Court of Appeal dismissed the son's appeal by a majority of two judges to one.
The majority held that a marriage solemnised before 1 October 2016 cannot be declared void merely because it was entered into for immigration purposes in exchange for payment.
The Court explained that section 105 of the Women's Charter sets out an exhaustive list of grounds on which a marriage may be declared void.
The courts cannot introduce additional grounds for invalidating a marriage simply because the marriage appears dishonest, improper or contrary to public policy.
The majority also rejected the argument that the alleged false declaration made when obtaining the marriage licence automatically rendered the licence invalid.
Accordingly, the marriage remained legally valid despite the circumstances surrounding it.
What Does Singapore Law Say About Sham Marriages?
Section 11A of the Women's Charter specifically addresses marriages of convenience.
For marriages solemnised on or after 1 October 2016, a marriage may be void where:
A party enters into the marriage knowing or having reason to believe that its purpose is to obtain an immigration advantage; and
Money or another form of gratification is offered, given or received as an inducement or reward for entering into the marriage.
However, the marriage is not void under this provision if both parties reasonably believed, when entering into the marriage, that it would result in a genuine marital relationship.
Importantly, section 11A does not apply retrospectively to marriages solemnised before 1 October 2016.
Therefore, the date of marriage is particularly important when determining whether a marriage of convenience can be declared void under this provision.
Does Living Separately Mean a Marriage Is Invalid?
No.
The Court of Appeal emphasised that the law generally does not examine the private motivations of parties entering into a marriage.
A marriage does not automatically become invalid simply because:
The spouses do not live together.
The marriage was kept secret from family members.
The parties have limited contact with each other.
The marriage was entered into for financial or practical reasons.
The parties do not behave like a conventional married couple.
Provided the statutory requirements for a valid marriage have been satisfied, these circumstances alone do not necessarily invalidate the marriage.
There is an important distinction between a marriage that is legally invalid and a marriage in which the parties fail to fulfil their marital obligations.
What Happens to the Deceased Spouse's Assets?
This case also demonstrates how the validity of a marriage can have significant consequences for inheritance.
Where a person dies without a will in Singapore, the surviving spouse may be entitled to inherit under the Intestate Succession Act 1967.
In this case, the deceased left behind a son and a surviving wife.
Because the marriage was not declared void, the wife retained her legal status as the deceased's spouse and stood to inherit half of his estate.
The Court of Appeal did not determine the separate probate and estate administration issues, which were not pursued on appeal.
The case illustrates why disputes over the validity of a marriage can have substantial financial consequences, particularly where property and inheritance rights are involved.
Key Takeaways
The Court of Appeal's decision establishes several important principles.
1. A sham marriage is not automatically void.
Whether a marriage is legally valid depends on the statutory requirements under the Women's Charter, rather than merely whether the relationship appears genuine.
2. The date of marriage matters.
Section 11A applies to marriages solemnised on or after 1 October 2016 and does not retrospectively invalidate earlier marriages of convenience.
3. The grounds for declaring a marriage void are limited.
The courts must apply the statutory grounds under the Women's Charter and cannot create new grounds based solely on public policy concerns.
4. Marriage validity can affect inheritance rights.
A surviving spouse may retain inheritance rights even where family members dispute whether the marriage was genuine.
5. Annulment and divorce are different legal processes.
An annulment concerns whether a marriage is void or voidable under the law. A divorce dissolves a legally valid marriage. The appropriate procedure depends on the facts and applicable statutory grounds.
Conclusion
The decision in Cheng Tze Tzuen v Dang Lan Anh [2026] SGCA 42 reinforces the importance of legal certainty in determining marital status.
Even where there is evidence suggesting that a marriage was entered into for immigration purposes rather than to establish a genuine relationship, that does not necessarily mean the marriage can be declared void.
The Court of Appeal clarified that the statutory grounds under the Women's Charter must be satisfied before a marriage can be invalidated.
For individuals considering an annulment in Singapore, it is important to understand that an unhappy, unconventional or allegedly sham marriage does not automatically qualify for annulment.
Need Advice on Annulment or Divorce in Singapore?
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Disclaimer: This article is provided for general information only and does not constitute legal advice. Every case depends on its particular facts and circumstances.