Moving in together: the money conversation almost no couple has

According to the Office for National Statistics, cohabiting couple families are the fastest-growing family type in the UK, rising from 1.5 million in 1996 to 3.6 million in 2022. Most couples move in together long before marriage, if they marry at all. Yet the financial conversation that should accompany that decision often does not happen, or happens once, briefly, and never again.

Why the conversation matters more than it used to

Two facts make the financial conversation more important for unmarried cohabitants than for married couples:

1. Cohabitants have no automatic financial protections in England and Wales (see the rules on intestacy, pension sharing, and the absence of common law marriage). 2. The shared expenses that build up during cohabitation, rent, mortgage payments, furniture, holidays, savings, are governed by ordinary contract and trust law, not family law.

The implication is straightforward. If you do not write down what you have agreed, the law will reconstruct it from what you did, and that reconstruction is often expensive, slow, and uncertain.

What to cover

A practical money conversation before or shortly after moving in should cover:

• Rent or mortgage: who pays what, in what proportion, and what that contribution buys (a share in the property, or just somewhere to live)
• Bills and groceries: split equally, by income, or a hybrid
• Joint account or separate: how shared expenses are paid, and what goes into the joint pot
• Savings goals: deposit for a house, emergency fund, holiday, retirement
• Debts: existing debts each partner brings in, and how new debts will be handled
• Income changes: parental leave, redundancy, illness, career change
• What happens if you separate: who keeps what, who moves out, how shared assets are divided
• What happens if one of you dies: wills, life insurance, pension nominations

This is not a romantic conversation. It is also not an optional one. The Money and Pensions Service, a government-backed body, publishes guidance on this for exactly this reason.

Two principles that make it easier

• Disclosure before agreement. Each partner shares a clear picture of income, assets, debts, and outgoings before any decision is made. Decisions made without disclosure are not really decisions; they are guesses.
• Write it down and revisit. Verbal agreements between cohabitants are difficult to evidence. A written record, even a short one, signed and dated, anchors any future conversation. Revisit it whenever circumstances change.

A private financial agreement gives you both of those by design. The structure of the document forces the disclosure, captures the agreement, and creates a record you can update each year. It is the conversation that protects the relationship, not the one that ends it.