Unmarried and Living Together: Why Does a Cohabitation Agreement Matter?

Because Love Isn’t a Legal Contract

Recent proposals to reform the rights of unmarried couples have brought cohabitation firmly into the spotlight. With millions of couples now choosing to live together without marrying, there is growing recognition that the law has not kept pace with modern family life. Proposals to strengthen the financial rights of cohabiting couples following separation and provide greater protection on death have highlighted an important issue: despite widespread assumptions to the contrary, unmarried couples currently have very limited legal rights. Until any future reforms are introduced, cohabiting couples remain largely responsible for protecting their own interests, making a cohabitation agreement one of the most sensible steps they can take.

A cohabitation agreement is one of the most practical and protective steps an unmarried couple can take. It is not a sign of mistrust. It is a recognition that the law does not automatically protect people who live together, even after many years or when they have children. In England and Wales, cohabiting partners have no automatic rights over each other’s property, assets or finances. This gap in legal protection is exactly why a cohabitation agreement matters.

What Is a Cohabitation Agreement?

A cohabitation agreement is a written document that sets out how you and your partner intend to manage your financial and practical arrangements while living together. It can cover:

• Ownership of property
• Contributions to the mortgage or rent
• Responsibility for bills and household expenses
• Savings, debts and personal assets
• What happens if the relationship ends
• Arrangements relating to children

It is a document that assists with forward planning and, whilst not 100% legally binding, it can be relied upon in court if any dispute arises so that the court is aware of the parties’ intentions.

Who Should Consider a Cohabitation Agreement?

Those who are unmarried should consider a cohabitation agreement. It can cover a wide range of circumstances, including:

• Couples moving in together for the first time
• Couples buying a home together where contributions are unequal
• Couples where one partner owns the property
• Couples with children
• Couples where one partner has significant assets
• Couples receiving financial help from family
• Friends or relatives buying a property together
• Anyone who wants legal certainty

If you are living with someone and sharing financial responsibilities, a cohabitation agreement is worth considering. It is not only for people with high value assets. It is for anyone who wants fairness, clarity and protection.

What Happens If You Separate Without a Cohabitation Agreement?

Separating without a cohabitation agreement can create uncertainty, financial risk and emotional strain. The law does not provide unmarried couples with the same protections that married couples have, which can lead to outcomes that feel unfair or unexpected.

1. You May Have No Right to the Home You Live In

If the property is in your partner’s sole name, you may have no automatic right to stay there or receive any share of its value. You would need to prove a financial interest, which can be difficult, expensive and uncertain.

2. You May Lose Your Financial Contributions

Payments towards bills, food, furniture or day to day living costs usually do not create any legal rights. Even contributions to mortgage payments or renovations may not be recoverable unless you can show clear evidence of an agreement or shared intention.

3. You May Face a Costly Legal Dispute

Without a written agreement, disagreements about property, money or belongings can escalate quickly. Court proceedings under the Trusts of Land and Appointment of Trustees Act (TOLATA) can be lengthy, stressful and expensive.

4. You May Be Financially Vulnerable If You Have Children

Unmarried parents do not have the same financial claims as divorcing spouses. Child maintenance may be payable, but there is no automatic right to spousal maintenance, pension sharing or a share of assets.

5. You May Lose Gifts or Contributions from Family

If your parents helped with a deposit or renovation costs, that money may be at risk if there is no agreement recording the intention behind it.

6. You May Have No Protection If Your Partner Dies

Without a Will or agreement, you may not inherit anything. You may also have no right to stay in the home, even if you have lived there for years.

A cohabitation agreement helps prevent these situations by setting out clear expectations and protecting both partners from uncertainty.

When Is a Cohabitation Agreement Used?

People choose to put a cohabitation agreement in place in a range of situations, including:

• Moving in together
• Buying a property jointly
• One partner moving into the other’s home
• Having children together
• Receiving a gift or inheritance from a parent or relative
• Buying property with friends or relatives

Cohabiting families are now the fastest growing family type in the UK. Many people assume they are protected. The reality is that they are not.

To Summarise: What Is the “Why”?

1. There Is No Such Thing as Common Law Marriage
2. It Protects Your Financial Contributions
3. It Reduces Conflict if You Separate
4. It Provides Security if One Partner Dies
5. It Encourages Honest Conversations

And Finally…

A cohabitation agreement is not unromantic. It is responsible. It recognises that relationships are built on trust, but the law is built on clarity. For unmarried couples, this document provides fairness, certainty and peace of mind. It protects what you have built together and helps ensure that both partners are treated fairly if life takes an unexpected turn.

There have been many occasions where couples have lived together for years, sometimes for 10, 20 or even 30 years, believing they were in a “common law marriage” and therefore had automatic rights to property and finances. Unfortunately, this is a common misconception. Some individuals have found themselves without a home and without a financial interest in a property they had contributed towards for many years. Following separation, they have been left without the resources needed to secure alternative accommodation or rebuild their financial position. A properly prepared cohabitation agreement can help avoid uncertainty and provide much-needed protection long before problems arise.

If this is something you resonate with, and you would like to seek confidential legal advice, please do not hesitate to contact our Family law team for support.