What is the Meaning of a Cohabitation Agreement in South Africa?

A cohabitation agreement in South Africa is a written contract between two people who live together in a committed relationship without being married, recording how property, finances, household contributions, and personal arrangements will be handled during the relationship and on separation or death. Unlike marriage or a civil union, unmarried cohabitation carries no automatic legal status in South African law — there is no recognised common-law marriage, and the Domestic Partnerships Act that Parliament enacted to fill the gap has been signed into law but never brought into force. Partners therefore rely on contract law, not matrimonial law, to set their own terms, and a properly drafted agreement that is signed, witnessed, and notarised carries the strongest evidentiary weight if it is later challenged in court.

What a Cohabitation Agreement Is

A cohabitation agreement is a written contract between two unmarried partners — opposite-sex or same-sex — who live together in a committed relationship. It sets out the practical and financial terms of that shared life: who owns what, who pays what, how joint decisions are made, and what happens if the relationship ends. The document is a private contract; it is not registered with any government office, and no law requires a couple to have one in place.

It is useful to keep it distinct from an antenuptial contract. An antenuptial contract only takes effect on or in contemplation of marriage, and it is registered against the title deeds of fixed property. The cohabitation agreement is its unmarried equivalent — a stand-alone contract between two people who have chosen, for whatever reason, not to marry or enter a civil union.

Why a Cohabitation Agreement Is Different from Marriage or a Civil Union

Marriage under the Marriage Act 25 of 1961 and civil unions under the Civil Union Act 17 of 2006 both create automatic legal consequences the moment the ceremony is concluded. A matrimonial property regime attaches to the spouses, maintenance duties arise between them, and the surviving spouse acquires defined intestate succession rights. Unmarried cohabitation creates none of these consequences — the parties are treated as separate legal persons unless they have a contract between them.

The Constitutional Court’s 2005 decision in Volks NO v Robinson and Others confirmed that the surviving partner of a permanent same-sex life partnership had no automatic inheritance rights from her deceased partner’s estate under the Intestate Succession Regulations. That judgment prompted Parliament to attempt to close the gap through the Domestic Partnerships Act, but the Act was signed into law and never commenced. To this day, an unmarried cohabiting partner has no automatic right to inherit, claim maintenance, or share in the deceased estate simply by virtue of the relationship.

This absence of automatic protection is precisely the gap a cohabitation agreement exists to address. The agreement does not change the parties’ legal status — it builds rights and obligations by contract that the law would otherwise not supply.

What a Cohabitation Agreement Typically Covers

A well-drafted agreement records the partners’ intentions across the categories that tend to cause dispute during the relationship or at its end. The list below is not exhaustive, but it reflects the matters most cohabitation agreements deal with in practice:

• Property and assets — who owns which assets brought into and acquired during the relationship, how jointly purchased property is held and divided, and how the parties deal with the bond and any future sale.
• Household contributions — how bond repayments, rent, rates, utilities, groceries, and other shared expenses are split, and what happens if one partner consistently contributes more than the agreed share.
• Debt allocation — which existing debts each party brought into the relationship, how debts incurred during the relationship are allocated between them, and which party remains liable to which creditor.
• Savings and investments — how joint savings, investments, and contributions to pension or provident funds are treated during the relationship and on separation.
• End-of-relationship outcomes — division of jointly acquired property on separation, timeframes for one party to vacate the shared home, treatment of any shared pet, and what happens to a jointly run business.
• Death of a partner — whether the surviving partner has a contractual claim against the deceased’s estate, whether life-insurance policies nominate the survivor, and how the agreement interacts with the Intestate Succession Act 81 of 1987 and any valid will.
• Children — acknowledgement of any children of the relationship, each party’s maintenance responsibilities, and (where applicable) school fees, medical costs, and tertiary-education contributions.
• Dispute resolution — whether disputes are first referred to mediation or arbitration before any court action is contemplated.

Legal Status and Enforceability

A cohabitation agreement is a contract and is enforceable to the extent it complies with the ordinary principles of South African contract law: contractual capacity, lawful subject matter, consensus, certainty, and the possibility of performance. The Constitution and the common law of contract together determine whether a particular term will hold.

A court can set aside individual terms that were signed under duress, that flow from material misrepresentation by the other party, or that are so one-sided as to be unconscionable on the facts of the case. A term that attempts to oust the jurisdiction of a competent court, or to contract out of a statutory obligation such as a parent’s duty to maintain a minor child, is unenforceable to that extent and may colour the court’s reading of the rest of the agreement.

An agreement that is properly signed, witnessed, and notarised carries materially stronger evidentiary weight — particularly if it is later challenged in the Master of the High Court after a death, or in the divorce or maintenance court after separation. Burger Huyser Attorneys’ family-law team is set up to handle the drafting, witnessing, and notarising of cohabitation agreements in a single appointment, because qualified notary and conveyancing staff are available in-house across its Gauteng branches.

What a Cohabitation Agreement Cannot Do

The agreement is a powerful private tool, but it has limits that no contract can overcome. Couples should understand these limits before signing:

• It cannot create a maintenance duty on separation. The statutory duty to pay maintenance arises on divorce, not on the ending of an unmarried relationship. The agreement cannot manufacture a spousal-style maintenance obligation that the law does not impose.
• It cannot override a parent’s duty to support a minor child. Both parents remain liable to maintain their children regardless of any contract between them, and the Maintenance Act may be enforced against either parent whether or not they ever lived with the other.
• It cannot bypass the Intestate Succession Act where a partner dies without a will. The surviving unmarried partner is not an intestate heir. The agreement itself may be a relevant factor when the Master considers a redistribution claim, but only a valid will, executed in addition to the agreement, gives the surviving partner an actual inheritance.
• It cannot grant inheritance rights reserved by law to a spouse or other intestate heir. Only a valid will can do that, and a will should be put in place alongside the cohabitation agreement.

Who Should Consider a Cohabitation Agreement

A cohabitation agreement is not for everyone — many couples live together contentedly without one — but it becomes genuinely useful in a number of recognisable situations. The following couples are the ones who typically benefit most from putting terms in writing:

1. Couples who have chosen not to marry or enter a civil union, whether by personal preference or for practical reasons (for example, where one partner is still legally married to someone else and cannot yet dissolve that marriage).
2. Couples who are pooling finances, taking out a joint bond, buying property together, or starting a business together.
3. Couples where one partner is bringing significant assets or debts into the relationship and wants the position recorded clearly.
4. Couples where one or both partners have children from a previous relationship whose inheritance needs to be ring-fenced from the new partner.
5. Same-sex couples who cannot or do not wish to enter a civil union, and who want contractual certainty around property and finances.

Burger Huyser Attorneys’ family-law practice deals with cohabitation agreements regularly, and the firm’s director responsible for general family-law work is Anna-Mi Nel, who heads the Family Law Department and co-directs the Sandton branch. Couples who want a properly drafted agreement can be booked in through any Gauteng branch.

Comparison: Cohabitation Agreement vs Antenuptial Contract vs Marriage in Community

The three arrangements are easy to confuse in conversation. The table below sets them out side by side so the distinctions are immediately clear:

Aspect	Cohabitation Agreement	Antenuptial Contract	Marriage in Community
Status	Private contract between unmarried partners	Notarial contract executed before marriage	Default matrimonial property regime if no ANC is signed
Legal effect	Binds parties by contract; does not change legal status	Sets the matrimonial property regime that applies once married	Creates a joint estate between spouses
Property regime	Whatever the parties agree and record	Community of property, community of property excluding accrual, or out of community, as chosen	All assets and liabilities pooled, jointly held
Succession rights	Only what the agreement and any will provide	Subject to matrimonial property regime and Intestate Succession Act	Surviving spouse inherits in terms of Intestate Succession Act
Ended by	Agreement terms, separation, or death of a party	Divorce or death of a spouse	Divorce or death of a spouse
Registered with	No government registration required	Deeds Office (endorsed against title deeds of fixed property)	Automatic by operation of law on marriage

Drafting and Signing: Practical Considerations

How the agreement is drafted and signed determines how much weight it will carry if it is ever challenged. A handful of practical points reliably improve the enforceability of the document:

• Independent legal advice for each party. A single attorney drafting for both sides creates a real risk of the agreement being challenged later on the ground of undue influence or imbalance. Each partner should be independently advised.
• Full financial disclosure at signing. Recording each party’s assets, liabilities, income, and contingent obligations at the time of signing strengthens the agreement’s evidentiary value if it is later challenged.
• Notarisation. Notarisation by a notary public is strongly advisable even though the law does not strictly require it. A notarial contract carries materially stronger evidential weight in any later dispute.
• Periodic review. The agreement should be reviewed every few years, or on any material change in circumstances such as the birth of a child, a joint property purchase, the start of a business, or relocation to another country.
• Witnessing. Witnessing by two competent adult witnesses is the bare minimum; the notary can act as one of the witnesses when the agreement is notarised.
• A short exit clause. Recording what happens if either party wants to end the agreement during the relationship, and how that interacts with the other terms, prevents a later argument that the agreement cannot be wound up.

Frequently Asked Questions

Is a cohabitation agreement legally binding in South Africa?

A cohabitation agreement is a contract and is binding on the parties to the extent that it complies with the general principles of South African contract law: lawful subject matter, certainty, capacity, and voluntary consensus. It does not have the automatic legal force of a matrimonial property regime, and a court can set aside individual terms that are against public policy or that try to contract out of a statutory duty such as a parent’s obligation to maintain a minor child.

Is there common-law marriage in South Africa?

No — South African law does not recognise common-law marriage. The Constitutional Court’s 2005 decision in Volks NO v Robinson confirmed that an unmarried partner does not acquire automatic legal rights on the death of the other, and the Domestic Partnerships Act that was intended to address the gap has been signed into law but never brought into force.

Does a cohabitation agreement need to be notarised?

Strictly speaking, no — an agreement that is signed and witnessed is enforceable as a contract. Notarisation is not a legal requirement but is strongly recommended, because a notarial contract carries stronger evidential weight if the agreement is later challenged in the Master of the High Court, in maintenance proceedings, or in any civil dispute between the parties.

Can a cohabitation agreement cover what happens on the death of one partner?

Yes — the agreement can record what the parties intend to happen to jointly owned property, household contents, life insurance nominations, and any contractual claim against the estate. It does not, however, override the Intestate Succession Act or replace a valid will, so a partner who wants to inherit from the other should ensure there is a current will in place alongside the agreement.

What happens if we split up and never signed an agreement?

Without an agreement, the parties must rely on the general principles of contract, unjustified enrichment, and any universal partnership that may have arisen, together with the contents of any jointly owned property register. There is no automatic equal split, and the position is materially less certain than it would be with a properly drafted, signed, and preferably notarised cohabitation agreement.

Can same-sex couples use a cohabitation agreement?

Yes — same-sex couples can enter into a civil union under the Civil Union Act 17 of 2006 if they want automatic legal status, and a cohabitation agreement is a contractual alternative for those who have not entered a civil union, or for those who want to record specific financial and property arrangements in addition to (or instead of) the civil-union regime.

If you and your partner are considering a cohabitation agreement — whether you have just moved in together, are buying property jointly, or want to formalise arrangements you have had informally for years — Burger Huyser Attorneys’ Family Law team can draft, witness, and notarise an agreement tailored to your circumstances. Initial consultations are booked through the head office in Linden/Randburg on 011 888 0246 or through any of the firm’s Gauteng branches — Sandton 011 253 3080, Roodepoort 011 668 0030, Bedfordview 011 201 7190, Centurion 012 644 4990, Pretoria 012 471 5700, Alberton 011 439 3990, and Midrand 010 022 4082. The firm carries a 4.8/5 average across 250+ Google reviews and handles family-law matters across all Gauteng branches.