- Legal requirements are clear but widely ignored, leaving marriages vulnerable.
- Consent and court approval are essential yet often overlooked.
- Women face exclusion and financial loss at divorce or death.
Polygamous customary marriages are recognised by South African law. But widespread misunderstanding about how these marriages work legally is leaving many women financially exposed, emotionally devastated and without protection when marriages end, or husbands die.
These problems rarely surface early. They usually only come to light at divorce or death. By then, families are already in crisis, and the legal consequences can be irreversible.
Customary marriages are not informal arrangements outside the law. They are recognised by legislation and protected by the Constitution. But they come with strict legal requirements. Ignoring them can destroy families.
What the law requires
South African law allows polygamy only in customary marriages, and only where a man has more than one wife. These marriages are governed by the Recognition of Customary Marriages Act. But legality depends on more than tradition or intention.
For a polygamous customary marriage to be valid, all parties must be over the age of 18, everyone must consent freely, and the marriage must be properly negotiated and entered into according to custom.
Failing to meet these requirements can render a marriage legally invalid, regardless of how long the relationship lasted or whether children were born.
The Constitutional Court settled this issue in Mayelane v Ngwenyama in 2013. A husband cannot validly enter into a second customary marriage without the consent of his first wife, even though the Recognition of Customary Marriages Act does not explicitly spell this out.
Allowing a man to marry again without his wife’s consent undermines her dignity, equality and financial security, and is inconsistent with constitutional values. No consent from the first wife means no valid second marriage.
If the first wife did not consent to the husband taking another wife, the second marriage is invalid, and this cannot be emphasised enough.
It does not matter how committed the relationship was. Without consent, the law does not recognise that marriage.
Before taking an additional wife, a husband must apply to the High Court for approval of a written contract regulating how property in the existing and future marriages will be managed.
This process exists to protect all spouses, although in practice, it is ignored far too often. Some families are unaware of the requirement. Others assume it is unnecessary or unaffordable. But the law does not agree.
Failing to obtain High Court approval of a property contract does not automatically invalidate a subsequent customary marriage.
However, there is a serious financial consequence. The later marriage is treated as out of community of property by default.
This means the second wife does not share in the joint estate of the first marriage. It often only becomes apparent years later, usually after a death, when women discover that they have no automatic claim to property they believed was part of the marriage.
Where things go wrong
Most disputes involving polygamous customary marriages arise when a husband dies or a marriage ends. This is when issues of consent, registration and property regimes become critical.
While registering a customary marriage with the Department of Home Affairs is not legally required, failure to register can make it extremely difficult to prove the marriage later. After someone dies, everything depends on proof.
If the marriage cannot be proven or its validity cannot be established, a woman may be excluded from the estate entirely. Inheritance disputes are particularly common where there are multiple wives.
If a later marriage is found to be invalid because consent was never given, that woman may not be recognised as a spouse at all.
Despite legal protections, women remain the most vulnerable when things go wrong.
Many women do not realise that customary marriages are automatically in community of property. Others believe that leaving the marital home ends the marriage. It does not. Only a court can grant a divorce.
Women who lived as wives for many years frequently walk away with nothing because the legal steps were never taken. In most cases, it is not bad faith but rather a lack of information, with devastating consequences.
What can be done
Couples entering customary marriages, and especially polygamous ones, must seek legal advice early and register their marriages.
Registration creates certainty. It simplifies everything from divorce to death benefits. It is one of the most practical ways to protect yourself.
As South Africa continues discussions around reforming marriage laws, public education is critical.
Customary marriages are an important part of society and deserve respect, but respect also means understanding the law and complying with it.
When people get this right, the law protects families. When they do not, the consequences can be devastating.
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