An antenuptial contract with accrual allows spouses to keep separate estates during the marriage, while sharing the growth of their estates when the marriage ends. In South African law, this accrual system is often misunderstood — and when drafted incorrectly, it can cost millions in divorce or death claims.
Quick answer: An antenuptial contract with accrual means you and your spouse keep separate estates during the marriage, but you share the growth (the “accrual”) at the end of the marriage – unless your ANC excludes accrual or excludes specific assets.
If you’re signing an ANC because you “never want to share anything,” accrual may not be the right fit. And if you’re signing an ANC to protect the partner who may earn less (children, caregiving, career breaks), accrual can be a smart fairness mechanism – but only if it’s drafted properly.
This guide gives you seven practical examples (simple numbers) so you can understand what you’re signing before you sign it.
Quick source check before you choose accrual
The accrual system comes from the Matrimonial Property Act. In simple terms, spouses keep separate estates during the marriage, but share the growth of their estates at divorce or death unless accrual is excluded or specific assets are excluded properly.
- Use the examples below to understand the numbers, not as a substitute for drafting advice.
- Record commencement values carefully and keep proof.
- Decide whether inheritances, businesses, trusts, loan accounts or specific assets need special wording.
- If you want no sharing of growth at all, read the without-accrual route before signing.
Source text: Matrimonial Property Act 88 of 1984. Related routes: antenuptial contract in South Africa, accrual system guide, accrual in divorce and Prenups.co.za.
TL;DR — Antenuptial Contract With Accrual
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An ANC with accrual means each spouse keeps a separate estate during marriage, but shares the growth of their estates when the marriage ends.
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Accrual is calculated by comparing commencement values with end values at divorce or death.
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The most expensive mistake is failing to record realistic commencement values with proof.
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Inheritances, businesses, and specific assets can be excluded — but only if the ANC is drafted clearly.
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Accrual often works well where one spouse earns more or steps back for childcare, but it must be planned carefully.
Watch: I explain how the accrual system works in plain English, including the mistake that causes most disputes.
What is the accrual in an antenuptial contract with accrual?
Accrual is the increase in the net value of each spouse’s estate from the start of the marriage to the end of the marriage.
In practice:
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You record a commencement value (what your estate is worth when you marry).
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At divorce (or death), you calculate each spouse’s net estate.
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You compare the growth in each estate. The spouse whose estate shows no accrual or the smaller accrual may have a claim against the other for half the difference (as a starting point under the accrual framework).
Important: The law has technical rules (including inflation adjustment and exclusions). If the numbers matter, get the structure right up front.
The single mistake people make in an antenuptial contract with accrual
People sign an ANC with accrual but don’t record realistic commencement values – or they don’t keep proof.
That’s how a clean financial plan becomes a messy divorce:
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Arguments about what you “really had” at the start
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Disputes about what should be included/excluded
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Valuation fights, forensic work, and avoidable legal spend
If you want accrual to work, you want:
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Clear commencement values (with proof)
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Clear asset exclusions (if any)
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Clear treatment of business interests, inheritances, trusts, and offshore assets
Example 1: Both spouses start with “nothing”
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Spouse A starts at R0, ends at R3,000,000 → accrual R3,000,000
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Spouse B starts at R0, ends at R1,000,000 → accrual R1,000,000
Difference in accrual = R2,000,000
Indicative claim = R1,000,000 (half the difference)
Practical takeaway: If one spouse is likely to build significantly more wealth, accrual creates fairness — but only if you plan for it properly.
Example 2: One spouse enters with a property (commencement value matters)
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Spouse A start: R2,000,000 (property), end: R4,000,000 → accrual R2,000,000
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Spouse B start: R0, end: R1,000,000 → accrual R1,000,000
Difference = R1,000,000 → indicative claim R500,000
Practical takeaway: Accrual is about growth, not “who owns what” during the marriage.
Example 3: Inheritances — what most couples misunderstand
Many people assume an inheritance automatically gets shared. In the accrual framework, inheritances and donations are often excluded from accrual unless the ANC (or the donor/testator) provides otherwise.
Example (simplified):
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Spouse A ends at R3,000,000, including R2,000,000 inheritance (excluded)
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Adjusted end value for accrual calculation may treat the inheritance differently depending on how the ANC is drafted.
Practical takeaway: Don’t guess. If inheritances matter in your family, your ANC must deal with it clearly.
Example 4: Business growth — the silent killer of bad drafting
If Spouse A owns shares in a business that grows dramatically, but the ANC is vague about valuation:
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you can end up in a valuation war,
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you may argue about goodwill, shareholder loans, retained earnings, and “what the business is worth” at divorce.
Practical takeaway: If either spouse owns (or plans to build) a business, your ANC must anticipate valuation and exclusions. For more: divorce process in South Africa.
In practice, disputes around valuation usually arise because the antenuptial contract with accrual did not clearly regulate business interests, goodwill, or exclusions at the outset.
Example 5: Excluding a specific asset (e.g., a family farm)
If you exclude a specific asset from accrual, you must define it precisely — and ideally define what happens to:
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growth,
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income,
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improvements,
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proceeds if it’s sold.
Practical takeaway: Asset exclusions must be specific, not vague — otherwise you build future litigation into the contract.
Example 6: “Without accrual” vs “with accrual” in one sentence
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Without accrual: “What’s mine stays mine; what’s yours stays yours.”
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With accrual: “We stay separate during marriage — but we share the growth at the end.”
Example 7: Why an antenuptial contract with accrual is often the fair choice
Accrual is often a strong option where:
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one spouse steps back for childcare,
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one spouse earns significantly more,
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you want separation during marriage but fairness at the end.
Practical takeaway: Accrual isn’t “weak.” It’s a deliberate choice — but it must match the reality of your relationship and financial plan.
So which ANC should you choose?
Ask these five questions:
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Do either of you own (or plan to build) a business?
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Do either of you expect inheritances or family assets?
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Will either spouse live abroad or earn offshore income?
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Are you planning children (and reduced earning for one spouse)?
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Do you want fairness at the end — or total separation?
If you can answer those honestly, your ANC becomes a plan — not a gamble.
With accrual vs without accrual: practical decision table
| Question | Accrual may suit you where… | Without accrual may need consideration where… |
|---|---|---|
| Fairness | You want each spouse protected during the marriage but want fair sharing of growth at the end. | You both deliberately want full separation, even if one spouse later earns less or steps back for family reasons. |
| Business and debt risk | The business risk can be managed by commencement values and precise exclusions. | There is serious creditor, professional-liability, trust or family-wealth exposure that must be insulated carefully. |
| Evidence | You can record starting values properly and keep records. | You want to avoid future valuation disputes as far as possible, accepting the fairness trade-off. |
| Marriage plan | You see the marriage as a partnership that should share what is built together. | You are entering a second marriage, protecting children from a prior relationship, or ring-fencing separate estates. |
For the process, cost and registration timeline before you sign, use the main Antenuptial Contract 2026 Guide. For a practical online prenup route, see Prenups South Africa.
Book an ANC consult (fixed fee)
If you want an ANC that actually does what you think it does, book a consult and we’ll advise on:
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with accrual vs without accrual
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what to exclude (and how to exclude it properly)
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how to record commencement values safely
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what your notary needs and what you should keep on file
CTA: Book an antenuptial contract consult with antenuptial contract lawyer.
FAQ
An ANC with accrual keeps spouses’ estates separate during the marriage, but allows a claim to share the growth in the estates at the end of the marriage (subject to legal rules and exclusions).
Generally, you compare the growth in each spouse’s net estate from the commencement value to the end value, then the spouse with the smaller or no accrual may claim an amount linked to half the difference (depending on how the ANC is drafted and what is excluded).
Often inheritances are excluded from accrual unless the ANC (or the donor/testator) states otherwise. Your ANC should deal with inheritances clearly to avoid disputes later.
Business interests can affect accrual calculations, especially where value is disputed. If either spouse owns a business, the ANC should anticipate valuation and exclusions.
With accrual means you share the growth at the end; without accrual means each spouse remains financially separate with no sharing of growth (subject to applicable legal principles and court powers in certain scenarios).
Poor commencement values (or no proof) can create disputes and litigation. Accurate commencement values and documentation reduce risk and improve enforceability.
Usually changes after marriage require a formal legal process (often involving a court application) and are not as simple as “amending” a document. Get advice early.
It depends on complexity, but many straightforward ANCs can be prepared quickly once both parties provide the required information. Registration timing depends on Deeds Office processes.
Recent court developments affecting accrual:
Related reading:
- Married out of community of property with accrual?
- Divorce Property Division in South Africa (2026): Estates, Assets & Accrual
- Uncontested Divorce South Africa
Suggested reading: