Even if you have dotted all the i’s and crossed all the t’s, sought independent legal advice well before the marriage, and factored in every eventuality, there are still certain matters that can override a prenup. This article looks at these scenarios.
Even if you have dotted all the i’s and crossed all the t’s, sought independent legal advice well before the marriage, and factored in every eventuality, there are still certain matters that can override a prenup. This article looks at these scenarios.
What mistakes can make the prenup unenforceable?
Sometimes, a prenuptial agreement may be overridden by the court during divorce proceedings. Although this is usually more common in agreements that have been drafted without a lawyer being involved. Some of the most commonly made mistakes that may cause a prenup to be overridden include:
- Including provisions for child support and custody of unborn children
- Less than full financial disclosure by one or both parties
- One or both parties lying about their financial circumstances
- Including provisions that are blatantly unfair or unjust to one party
- Including an infidelity clause where one party receives less because they have been unfaithful during the marriage
- Including “unusual” or “lifestyle” prenuptial clauses, such as if one party watches more than one football match per week they must pay their partner a fine, whether any future child will be raised as a vegetarian and what school they should attend, or setting out how household chores will be divided during the marriage.
Although the desire to include more unusual terms into a prenuptial agreement has become popular for couples, the law states that they are rarely enforceable in court. Since judges have overriding discretion, incorporating such clauses into an agreement opens the possibility that the whole prenup may be void and unenforceable. This is because many judges deem lifestyle clauses to be frivolous. The purpose of a prenuptial agreement is to determine the division of the financial aspects of the relationship, so any lifestyle clause or other unusual terms should be entered into an alternative agreement where the court does not have authority to interfere.
Does nullity automatically override a prenuptial agreement?
The concept of “nullity” refers to the legal voiding of a marriage, treating it as though it never existed due to reasons such as bigamy, lack of consent, or underage marriage.
Nullity does not inherently override a prenuptial agreement, but it can complicate its application. When a marriage is declared null, the legal framework shifts, potentially impacting the validity and enforcement of the prenup. Courts may scrutinise the circumstances under which the prenup was created, especially if issues like fraud or duress contributed to the nullity. For instance, if a marriage is annulled because of one party’s deceit, the prenup might be deemed invalid if it was signed under false pretences.
Ultimately, while a prenup remains significant, its enforceability in cases of nullity depends on the specific circumstances and judicial discretion. The court aims to ensure fairness, considering the intent and integrity of the agreement within the broader context of the nullified marriage.
What happens if my ex lied about their finances when the prenup was drawn up?
If your ex-partner lied about their finances when the prenup was drawn up, it can have significant implications for its validity. The court can consider such dishonesty as a ground to overrule or set aside the prenup.
A fundamental requirement for a valid prenup is full and honest financial disclosure from both parties. Each party must provide a complete and accurate picture of their financial situation, including assets, liabilities, income, and other relevant financial interests. This transparency ensures both parties enter the agreement with a clear understanding of what they are agreeing to and the potential implications.
If it is discovered that your ex-partner lied about their finances when the prenup was created, this misrepresentation can significantly undermine the agreement’s validity. The court may decide to overrule the prenup because it was not formed on the basis of accurate and truthful information.
The court assesses the fairness and reasonableness of the prenup at the time it is being enforced. If the financial deceit leads to an agreement that is significantly biased or unfair to one party, the judge is likely to invalidate it.
If the prenup is set aside due to financial misrepresentation, the court will proceed to reassess the financial settlement between you and your ex-partner. This reassessment will consider the accurate financial positions of both parties, ensuring a fair distribution of assets and liabilities.

Who can overrule a prenuptial agreement?
Prenuptial agreements are not automatically legally binding but can carry significant weight if certain conditions are met. The primary authority who can overrule a prenup is a judge. An arbitrator might be involved in the process of resolving disputes related to the prenup, but the final authority to enforce or overrule it rests with the court.
A judge can overrule a prenuptial agreement even if it was properly drawn up at the time for several reasons:
- The court will consider whether the agreement is fair to both parties at the time of enforcement. If the judge deems that the terms of the prenup leave one party at a significant disadvantage, the agreement may be overruled. This consideration is particularly pertinent if circumstances have significantly changed since the prenup was signed, rendering its terms unjust.
- For a prenup to be upheld, both parties must have made full financial disclosures and fully understood the implications of the agreement. If it is found that one party did not have a clear understanding or was not adequately informed, the judge may overrule the prenup.
- If there is evidence that one party was coerced or pressured into signing the agreement, or if there was any form of undue influence, the court can invalidate the prenup. The agreement must be entered into freely and voluntarily by both parties.
- The presence of children or a significant change in circumstances, such as illness or loss of income, can prompt the court to review the fairness of the prenup. The court prioritises the welfare of any children involved and will ensure that their needs are adequately met, which might require deviating from the prenup’s terms.
Ultimately, while a prenup can be a strong indicator of the parties’ intentions, the court has the overriding discretion to ensure that the agreement is fair and reasonable at the time of enforcement, whilst taking into account the prevailing circumstances and any changes that have occurred since the prenup was made.
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