This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
A prenuptial agreement in England and Wales is a formal financial arrangement made before marriage setting out how assets may be shared if the relationship ends. This guide explains what prenups are, how courts treat them, the criteria for enforceability, practical steps to prepare one, what they can include, their limitations, and how they work in practice.
A prenuptial agreement (often called a prenup) is a formal agreement made by a couple before marriage or a civil partnership setting out how their property, finances and other assets would be dealt with if their relationship ends. While prenups are widely used internationally, in England and Wales they occupy a specific and evolving position in family law. This article explains what prenuptial agreements are, how they work under current UK law, when they may be considered by the courts, and what practical steps couples can take before creating one.
What Is a Prenuptial Agreement?
A prenuptial agreement is a written record of financial arrangements entered into by two people before they marry or form a civil partnership. It typically sets out:
- How assets, property and savings will be divided if the relationship ends
- Treatment of income, pensions, business interests and debts
- Whether either party will provide spousal maintenance after separation
The core purpose of a prenup is to provide clarity and reduce uncertainty about financial outcomes in the event of divorce or dissolution. It is not designed to cover child-related matters such as child maintenance or custody, as these remain firmly under the jurisdiction of the family courts in England and Wales.
Legal Status in England and Wales
Under current law in England and Wales, prenuptial agreements are not automatically legally binding in the way that some other legal contracts are. Historically, prenups were regarded as contrary to public policy because they attempted to limit courts' discretionary jurisdiction to make fair financial orders on divorce.
However, the legal position changed significantly following the Supreme Court's landmark decision in Radmacher v Granatino (2010). In that case, the Supreme Court held that the court should give effect to a prenuptial agreement that has been freely entered into with full understanding by both parties, unless it would be unfair in the circumstances to do so. As a result:
- Prenups are now highly persuasive and often upheld by family courts.
- The court still has the final discretion and can depart from the agreement if fairness requires it.
- Prenups cannot completely oust the court's power to make financial orders under the Matrimonial Causes Act 1973 or under the Civil Partnership Act 2004 in dissolution cases.
When Will a Court Uphold a Prenup?
For a prenuptial agreement to carry significant weight in divorce proceedings, certain key criteria are generally expected:
1. Voluntary Agreement
Both parties must enter the agreement freely and without pressure or duress. An agreement signed under pressure is less likely to be upheld.
2. Independent Legal Advice
Each person should receive separate legal advice from qualified solicitors. Independent advice helps ensure each party understands the legal and financial implications.
3. Full Financial Disclosure
Both parties must disclose all relevant financial information, including assets, income and liabilities. Lack of disclosure can make a prenup vulnerable to challenge.
4. Timing and Fairness
The agreement should be signed well in advance of the wedding or civil partnership ceremony - typically at least 28 days before - to show there was time to consider the terms carefully. Terms must be fair in light of each person's needs and not leave either party in hardship, especially if there are children.
5. Reasonable Terms
While prenups can cover financial arrangements, they cannot dictate arrangements for children such as child maintenance or custody, which remain subject to court rules and the child's welfare.
What Can and Cannot Be Included
Prenuptial agreements can cover a wide range of financial topics, for example:
- Ownership and division of properties and investments
- Treatment of business interests and pension pots
- Allocation of savings, debts and liabilities
- Arrangements for spousal maintenance
Areas that cannot be definitively agreed in a prenup include:
- Child custody and child maintenance arrangements (courts decide this in the child's best interests)
- Terms that would leave a spouse in financial hardship, unless careful provision for needs is included
Postnuptial Agreements and Reviews
Couples who did not prepare a prenup before marriage can consider a postnuptial agreement (agreements made after marriage). These work in much the same way as prenups and can be reviewed if circumstances change, such as the birth of children or significant shifts in financial circumstances. Solicitors often recommend periodic reviews to ensure relevance and fairness over time.
Practical Steps to Prepare a Prenup
To create an effective prenuptial agreement under current UK law:
- Start early: Begin discussions well ahead of the intended wedding date.
- List assets thoroughly: Include both parties' current and expected future assets, pensions and liabilities.
- Seek independent legal advice: Each party should instruct a solicitor specialising in family law.
- Ensure disclosure: Provide full and honest financial disclosure.
- Agree fair terms: Consider the needs of both partners and any children to reduce the risk of unfairness challenges.
Risks, Challenges and Limitations
Despite their usefulness, prenuptial agreements have limitations in England and Wales:
- There is no statutory framework making them automatically binding, meaning the court retains discretion.
- An agreement could be challenged if one party claims they were pressured, did not understand its implications, or did not receive legal advice.
- Changes in life circumstances - such as serious illness, long marriages, or new children - may affect whether a court considers a prenup fair at the time of divorce.
There are ongoing calls for reform to create statutory nuptial agreements that are legally binding under specific conditions, but this has not yet become law.
Common Questions About Prenuptial Agreements
Do prenups guarantee a financial outcome on divorce?
No. Even with a properly drafted prenuptial agreement, a court can exercise its discretion and decide a different settlement if fairness requires it.
Can foreign prenups be recognised?
Yes, but they are not automatically enforceable. The court will assess them using the same fairness and transparency standards applied to UK agreements.
Will a prenup cover inheritance?
Prenuptial agreements generally can protect assets such as inheritances if clearly included, but how they are treated ultimately depends on the terms and whether the agreement is upheld in court.
Key Takeaways
A prenuptial agreement is a formal financial agreement made before marriage or a civil partnership. In England and Wales, such agreements are not automatically legally binding, but family courts now give them substantial weight if they are entered into voluntarily, with full financial disclosure, and with independent legal advice. Prenups can provide clarity about financial arrangements and may reduce disputes in the event of divorce, but they do not override the court's power to make fair financial orders. Careful drafting, planning well in advance of a wedding, and ensuring fairness will improve the likelihood that a prenup is given effect by the courts.
