Last year, Sarah and Tom had been together for twelve years. They had a mortgage together, two children, and assumed they were protected by UK law. When Tom died suddenly, Sarah discovered she had almost no legal claim to his pension, his estate, or even the family home they’d built together.
Sarah and Tom are not alone. Research shows that 47% of UK couples mistakenly believe that “common-law marriage” is a real legal status that protects cohabiting partners. It isn’t. And in a country where 6.8 million people are cohabiting without marriage, this misconception represents one of the largest unspoken financial vulnerabilities in British households.
The gap between what we think we’re protected by and what the law actually offers is vast. This guide explores that gap, and more importantly, how to bridge it.
The Common-Law Marriage Myth: Why It Matters
The phrase “common-law marriage” appears in conversation all the time. At dinner parties. In legal advice columns. In conversations between friends. It sounds official. It sounds protective. And it’s almost entirely fictional in UK law.
Here’s what actually exists: common law is a system of law based on precedent and judicial interpretation rather than written statutes. But “common-law marriage” as a protected status does not exist in England, Wales, Scotland, or Northern Ireland.
This distinction matters enormously. Because if you believe you’re protected when you’re not, you won’t take the steps that actually keep you safe.
The Law Commission found in 2022 that cohabiting couples face significant legal vulnerabilities. Yet many couples are unaware of these vulnerabilities because they believe in protections that simply don’t exist.
The consequences are real. A cohabiting partner has no automatic rights to their partner’s pension (unlike a spouse), no inheritance rights to their partner’s estate (unless specified in a will), no automatic claim on property (even if they’ve lived there for decades), and no automatic claim on financial assets accumulated during the relationship.
If one partner dies without a will, the other receives nothing under intestacy law, regardless of how long they’ve been together.
What Cohabiting Couples Actually Lack Legally
Understanding what you don’t have is the first step toward actually protecting yourself.
(a) Pension Rights
When a married person dies, their surviving spouse can inherit their pension (depending on scheme rules). Cohabiting partners have no such automatic rights. The pension goes to the estate or is distributed according to the scheme’s rules, not to you.
This is particularly serious because pensions often represent the largest financial asset in a household.
(b) Inheritance and Succession
If you’re married and your spouse dies without a will, UK intestacy law provides a clear hierarchy. A spouse is prioritised. A cohabiting partner is not mentioned in the hierarchy at all. The estate goes to children, parents, siblings, and more distant relatives before there’s any consideration of a long-term cohabiting partner.
(c) Property Rights
Married couples have joint property ownership rights and legal protections if they divorce. Cohabiting couples must rely on property law principles that are far less straightforward. If both your names are on a mortgage, you’ll have clear rights. But if only one partner’s name is on the deed, the other partner’s legal position becomes murky, even if they’ve paid toward the property.
(d) Financial Entitlements in Separation
When a married couple divorces, family law provides mechanisms for dividing assets fairly, including spousal maintenance. When a cohabiting couple separates, there are far fewer protections. You may be entitled to a claim on property under trusts law or proprietary estoppel, but these are complex, expensive, and uncertain compared to divorce proceedings.
Practical Financial Steps to Protect Yourselves
If you’re cohabiting, the absence of legal protection means you need to be proactive.
(a) Create a Will
This is non-negotiable. If you die without a will, your cohabiting partner receives nothing. With a will, you can specify that your estate goes to them. This costs roughly £150-£300 with a solicitor. It’s the single most important document you can create.
(b) Put Both Names on Property
If you’re buying a home together, both names should be on the deed. This establishes your legal ownership stake. Without this, a dispute over the property could become complicated and expensive.
(c) Nominate Pension Beneficiaries
Most pension schemes allow you to nominate a beneficiary who will receive your death benefit. Contact your pension provider and ensure your cohabiting partner is nominated. This is usually free and can be done in writing.
(d) Create a Cohabitation Agreement
A cohabitation agreement is a legal document that sets out how you’ll handle finances, property, and other matters. It clarifies who owns what, how debts are handled, what happens if you separate, and how children will be supported. A basic agreement through a solicitor costs £200-£500.
(e) Establish Clear Financial Records
If you’ve contributed to property, renovations, or other assets, keep records. If you’ve made financial sacrifices (like taking time out of work to raise children), document this.
(f) Review Insurance
Life insurance is crucial. Each partner should have a policy that names the other as beneficiary, covering the mortgage and providing financial security if one partner dies.
How to Have the Money Conversation
The financial conversation with a partner is often the most difficult conversation couples avoid. We talk about love, dreams, and children. We’re less comfortable talking about mortgages, pensions, and what happens if one of us dies.
But this conversation is an act of love, not a sign of doubt.
Start from a place of shared interest. Frame the conversation not as “protecting yourself from me” but as “protecting us, together.” Pick the right time, when you’re both calm and unhurried. Be honest about why it matters. Create a simple action list together. Consider professional support from a financial adviser or solicitor if you’re struggling.
How Technology Can Help
Technology is increasingly filling the gaps that UK law hasn’t yet addressed. Platforms are being built to help cohabiting couples manage shared finances, plan together, and protect themselves.
The most useful tools combine legal knowledge with financial planning, making it simpler for couples to take the practical steps we’ve outlined above.
Conclusion
The UK law system was built on assumptions that no longer match modern life. You can’t wait for the law to catch up. You have to protect yourselves now.
The good news is that protection is accessible. A will, a cohabitation agreement, nominated beneficiaries, and clear financial records are well within reach for most couples.
You’ve built a life together. Make sure the law recognises it.
Join the plan/ria waitlist at planria.co.uk to be notified when we launch our platform designed specifically to help couples navigate these conversations and protect themselves together.
Thank you for reading 💜
About the Author
CEO & Founder