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Protecting your future after marriage: Post-nuptial agreements

3 August 2026

Talking about the end of the relationship may not be the pillow talk partners imagined when they said, ‘I do’.

Regardless, a conversation around a post-nuptial agreement, also known as a post-nup, can be an important one to have.

It is a common misconception that a post-nup is only for the rich and famous. However, this is certainly not the case.

A post-nup doesn’t have a financial boundary. If you or your partner has an asset you want to protect, then a post-nup could be an option.

What is a post-nuptial agreement?

Much like a pre-nup, a post-nup is designed to protect your future should there be a breakdown of the marriage.

The contract will outline how assets, debts and property will be divided in the event of divorce according to the wishes of you and your partner.

In England and Wales, a post-nup is not a legally binding document.

They can hold significant weight in court, provided certain conditions are met. These include:

The agreement should be fair to both parties involved.
Neither party should be pressured into signing.
Each party must understand the agreement before signing.
Each party must make full financial disclosure of all assets.
Both parties must receive independent legal advice.

Post-nups are broadly the same as a pre-nup. However, they do differ in one sense: a post-nup is signed after the marriage has gone ahead.

Many couples choose to get a post-nup for a variety of reasons, such as if the pair have split and decided to reconcile, if one partner receives a large inheritance, or if one party gives up work to raise a child.

However, a post-nup can be instated for any reason. There is no ‘right’ reason to get a post-nup.

What is included in a post-nup?

The contract will include provisions on how assets will be split between parties should the marriage come to an end.

Post-nups often include details of:

Financial assets – How any money will be split between both parties. This can include details of how inheritances, family money or gifts will be split during the divorce.
Property – Details on who will keep the family home or any other properties that are dually owned. Property can also include personal property, things like cars, investments or even pets.
Debts – Many post-nups will include details of who will be responsible for specific debts that have been incurred during or before the marriage.
Spousal support – Couples are often advised to decide on spousal support before the marriage goes sour. Details should include if spousal support will be paid, who it will be paid to, how long it will be paid for and how much it will be.
Pensions – Specific considerations on how pensions will be split, if they will be split at all.

Some issues cannot be dealt with in a post-nup. There can be no mention of children, whether that is child custody or child maintenance payments.

The court will not recognise these inclusions, as it will decide what is best for any children involved in a divorce.

There also must be no mention of any lifestyle rules. This means no clauses about household chores or non-financial lifestyle matters. These are not legally enforceable and will not be recognised.

A post-nup also cannot assign blame for the breakdown of the marriage, including clauses on infidelity.

What are the benefits of a post-nup?

Although discussing the possibility of a marriage ending can be uncomfortable, a post-nuptial agreement can offer couples valuable peace of mind.

By setting out financial arrangements in advance, both parties can have a clearer understanding of what would happen should the relationship break down in the future.

One of the main advantages of a post-nup is the financial certainty it can provide.

Rather than leaving important decisions to be negotiated during what can be an emotionally challenging time, couples can agree in advance how assets, property and debts should be divided. This can help reduce disagreements and uncertainty if a divorce does occur.

A post-nup can also help protect assets that one party wishes to keep separate from the marital estate.

This may include an inheritance, family wealth, a business interest or assets acquired before the marriage.

For many couples, the agreement provides reassurance that these assets will be treated in accordance with their wishes.

Another benefit is that post-nups can help reduce conflict should the marriage come to an end.

With financial arrangements already documented, there is often less room for dispute, which can make divorce proceedings more straightforward and potentially reduce legal costs.

Many couples also choose to enter into a post-nup following a significant change in circumstances. A post-nup allows the agreement to reflect these changes and ensure both parties feel protected moving forward.