The four gates
The Four Requirements
Every valid civil marriage must pass four gates.
The four requirements
- Capacity to act — both parties must have the capacity to marry (age, mental capacity)
- Consensus — a genuine agreement to marry each other, free of material mistake, duress or misrepresentation
- Lawfulness — the marriage must not be prohibited (no existing marriage; not within the prohibited degrees of relationship)
- Prescribed formalities — the marriage must be solemnised in the form required by the Marriage Act 25 of 1961
The governing statute
Civil (opposite-sex) marriages are governed by the Marriage Act 25 of 1961; same-sex and opposite-sex civil unions by the Civil Union Act 17 of 2006; customary marriages by the Recognition of Customary Marriages Act 120 of 1998. A civil marriage is monogamous and heterosexual under the Marriage Act, but a couple of any sex may marry under the Civil Union Act.
Key Rule
Valid civil marriage = Capacity · Consensus · Lawfulness · Formalities. Fail a gate and the marriage is void or voidable, depending on which gate failed.
Common Mistake
Confusing the four requirements with the consequences of marriage. Requirements decide whether a marriage exists; consequences (personal and proprietary) flow only once it does.
Capacity
The Gate of Capacity
Who is legally able to marry?
Age
A person must have reached the age of puberty to marry; a marriage below puberty is void. A minor (under 18) needs the consent of both parents/guardian (Marriage Act ss 24–25). A boy under 18 or a girl under 15 additionally needs the Minister's consent under s 26 (as amended). The Children's Act 38 of 2005 reinforces that a child may not be married without the required consents. Caveat — do not present this as unproblematic: s 26's sex-differentiated threshold (15 for girls, 18 for boys) is constitutionally suspect — a plain s 9 equality problem — and is a live reform target. The consolidated Marriage Bill, intended to replace the Marriage Act, Civil Union Act and RCMA with a single statute, proposes a uniform minimum age of 18.
Missing consent — the remedies
If a minor marries without the required parental consent, the marriage is valid but voidable — a parent or the minor may apply to have it set aside before the minor turns 18 (and within a limited time). The Minister's consent, where required, is a validity requirement. If a parent unreasonably refuses consent, the minor must apply to the High Court — only the High Court, as upper guardian, may override a parent's refusal. If a parent is absent or incompetent (e.g. mental illness), the Children's Court may provide consent.
Mental capacity
A party must be mentally capable of understanding the nature and consequences of marriage. A person who is mentally ill or severely intoxicated at the ceremony lacks the capacity to consent, and the marriage is void for want of consensus.
Key Rule
Below puberty → void. Minor without parental consent → voidable. No mental capacity to understand the act → void (no true consensus).
Common Mistake
Saying a minor's marriage without parental consent is void. It is voidable — valid until set aside by a court within the permitted period.
Consensus
The Gate of Consensus
Did the parties truly agree to marry each other?
Real agreement
The parties must seriously and genuinely agree to marry each other. Consensus is absent — and the marriage void — where there is no true agreement, e.g. a marriage concluded as a joke or under a fundamental mistake.
Material mistake
- Error in negotio — mistake about the nature of the act (thinking it was an engagement, not a marriage) → no consensus, marriage void
- Error in persona — mistake about the identity of the other party → no consensus, void
- Error re an attribute (wealth, chastity, pregnancy by another) → does not vitiate consensus; the marriage stands (though it may be voidable for misrepresentation in narrow cases)
Duress & misrepresentation
A marriage induced by duress (illegitimate pressure/fear) or by a material misrepresentation is voidable at the instance of the aggrieved party. So too a "sham" or marriage of convenience may be attacked for want of genuine consensus to enter the marriage relationship.
Key Rule
Error in negotio or in persona → void (no consensus). Error about an attribute → marriage stands. Duress / misrepresentation → voidable.
Common Mistake
Thinking any lie told before the wedding voids the marriage. Only mistakes going to the nature of the act or the identity of the party destroy consensus; mistakes about qualities do not.
Formalities
The Gate of Formalities
Was the marriage solemnised in the prescribed way?
The prescribed form
- A duly appointed marriage officer must solemnise the marriage (ex officio officers such as magistrates, or designated ministers of religion who have received a Letter of Designation from Home Affairs)
- Both parties must be present in person at the same time — proxy marriages are void ab initio
- At least two competent witnesses aged 16 or older must be present and able to understand the proceedings
- The ceremony must take place in a church, public office or private dwelling with open doors — the ceremony may not be secret or clandestine (s 29)
- The marriage officer must put the prescribed marriage formula (s 30) and each party must declare consent; the officer then pronounces: "I declare that A.B. and C.D. have been lawfully joined in marriage"
- Immediately after, the parties, witnesses and officer sign the marriage register (Form DHA-30); the couple receives an abridged certificate (BI-27) as prima facie proof of the marriage
A missing marriage officer
If there is no (or no properly authorised) marriage officer, the marriage is generally void. An online or foreign ordination certificate does not confer authority to solemnise marriages in South Africa — only a person designated under the Marriage Act may do so. Minor, non-material defects in the formalities do not invalidate a marriage where the parties genuinely intended to marry and a properly authorised officer solemnised it.
Key Rule
Formalities: designated marriage officer + both parties in person + two witnesses (16+) + open doors + formula (s 30) + DHA-30 register. No authorised marriage officer → the marriage is void.
Common Mistake
Thinking registration creates the marriage. Registration records a marriage already solemnised; the marriage exists from the moment it is validly solemnised.
Status of defects
Void, Voidable & Putative
Three categories of defective marriage — with three very different consequences.
Void marriage
A void marriage never existed — no court order is needed to declare it a nullity, and no marital consequences ever arose. Causes: below puberty, a prohibited degree of relationship, an existing marriage (bigamy), or no authorised marriage officer.
Voidable marriage
A voidable marriage is valid until set aside by a court at the instance of the aggrieved party. Until annulled it produces all the normal consequences. Causes: minority without parental consent, material mistake, duress or misrepresentation, and (at the instance of the innocent spouse) impotence or a pre-existing pregnancy by another man concealed at the marriage.
Impotence vs sterility
Impotence (impotentia coeundi) — permanent, incurable inability to perform sexual intercourse existing at the time of the marriage — renders the marriage voidable, provided the other spouse was unaware. If the impotence is curable but the affected spouse refuses treatment, annulment may still follow; if the other spouse knew before marriage, they waive the right to annul. Sterility (impotentia procreandi — inability to procreate) is not a ground for annulment on its own (Venter v Venter 1949
(4) SA 123 (W)); it only becomes a ground if deliberately concealed as a fraud to induce the marriage. Note, however, that Van Niekerk v Van Niekerk 1959
(4) SA 658 (GW) later held the opposite — that sterility alone can render the marriage voidable — and academic writers treat the two decisions as unreconciled; in an evaluative answer, state Venter as the orthodox position and flag the conflict. Likewise, prenuptial stuprum (wife pregnant by a third party at marriage) renders the marriage voidable at the innocent husband's instance, provided he did not know and has not condoned (i.e. has not had consensual intercourse with the wife after discovering the truth).
Putative marriage
A putative marriage is a void marriage that at least one party entered in the bona fide (honest) but mistaken belief that it was valid. The test for good faith is subjective — the court examines the actual state of mind of the party, not whether a reasonable person would have believed it. The law presumes good faith where a formal ceremony took place. The putative effect ceases the moment both parties gain knowledge of the defect. Although void, the law softens the blow: children remain legitimate, and patrimonial consequences follow as if in community of property (unless a valid ANC existed), for the benefit of the bona fide party.
Zulu v Zulu — bigamy and the first wife's estate
Where the first marriage is in community of property, a second (bigamous) wife cannot claim a half-share of the joint estate even if she is bona fide and the second marriage is treated as putative. Reason: the first wife holds real, undivided co-ownership rights in the entire joint estate; granting the second wife a share would infringe those rights. You cannot be a party to two communities of property simultaneously. The second wife's remedy is a delictual claim against the husband's estate for fraud/breach of promise (Zulu v Zulu 2008
(4) SA 12 (D)).
Key Rule
Void = never a marriage (no order needed). Voidable = valid until annulled. Putative = void, but subjective bona fide belief rescues legitimacy of children and patrimonial benefits (stops when both know the defect). Zulu v Zulu: the first wife's community estate is not reduced by a second wife's putative claim.
Common Mistake
Confusing void and voidable. A bigamous marriage is void (a nullity from the start); a minor's marriage without consent is voidable (valid until a court sets it aside). Also: sterility alone is NOT a voidable ground — only impotence (inability to have intercourse) is.
Leading Cases
Moola v Aulsebrook NO1983 (1) SA 687 (N)Illustrates the putative-marriage doctrine — a bona fide but mistaken belief in a valid marriage attracts patrimonial protection despite the marriage being void.
Facts. A dispute turned on the status and consequences of a marriage that was defective in law but entered in the belief that it was valid.
Legal question. What are the consequences of a putative marriage — a void marriage entered in bona fide belief that it is valid?
Judgment. The court held a Muslim marriage solemnised by someone who was not a marriage officer, where the parties were bona fide, was putative, so the children were legitimate. The court stressed that the doctrine's real significance lies in the legitimacy of the children, noting the parties themselves could resort to a universal partnership for patrimonial relief.
Significance. A standard illustration of the putative-marriage doctrine — particularly its protection of the children's status.
Exam tip. Use for the "putative" limb when distinguishing void, voidable and putative marriages.
Prohibited relations
Impediments to Marriage
Not everyone may marry each other — blood and marriage ties create absolute bars.
Consanguinity (blood relations)
Consanguinity bars marriage between blood relatives in the direct line (parents and children, grandparents and grandchildren — prohibited ad infinitum) and between siblings, including half-siblings. First cousins may legally marry in South Africa — the prohibition does not extend to the collateral line beyond siblings. A marriage within the prohibited degrees is void ab initio; sexual relations within those degrees may constitute the crime of incest.
Affinity (relations by marriage)
Affinity is the legal relationship created between a spouse and the blood relatives of the other spouse. In the direct line it still prohibits marriage (e.g. a man may not marry his former wife's daughter or his former step-mother — the relationship persists even after the marriage creating it has dissolved). In the collateral line the prohibition has been lifted — you may now marry a former brother-in-law or sister-in-law once the marriage that created the affinity has ended.
Existing marriage — bigamy
A person who is already validly married (under any law recognised in SA — civil, customary, or civil union) may not contract another civil marriage with a different person. Such a purported marriage is void ab initio on grounds of bigamy. Note: a husband in a customary marriage may take a further customary wife under s 7(6) of the RCMA, but may not use the Marriage Act to do so.
Key Rule
Consanguinity: direct line + siblings → void; first cousins OK. Affinity: direct line → prohibited; collateral line → allowed (former in-laws). Existing marriage → bigamy, void ab initio.
Common Mistake
Thinking all in-law relationships bar marriage. Only the direct line of affinity is prohibited; collateral affinity (former spouse's sibling) is no longer a bar.