Moving In Together for the First Time: Money, Ownership and What to Agree

The Conversations Worth Having Before You Move a Single Box

Moving in with a partner is exciting. It's also the point at which two sets of finances, two sets of habits, and two sets of expectations become daily realities. The couples who navigate this most successfully tend to be the ones who had clear, direct conversations before the move — not the ones who assumed they'd figure it out as they went.

This guide focuses on the practical and legal dimensions of moving in together: ownership, money, and what to agree in writing. It's not about whether to move in together — that's entirely your decision — but about how to do it in a way that protects both of you.

Renting Together vs. Buying Together

The financial and legal stakes are very different depending on whether you're renting or buying.

**Renting together** is relatively straightforward. If you're both named on the tenancy, you're both jointly and severally liable for the rent — meaning either of you can be pursued for the full amount if the other doesn't pay. Your rights are governed by the Landlord and Tenant Act and your tenancy agreement. If you separate, you'll need to either end the joint tenancy (by mutual agreement or by serving notice on the landlord, which typically ends the tenancy for both of you) or come to an arrangement where one person takes it on.

**Buying together** is significantly more complex. You need to decide how ownership is structured, what happens if one person contributes more, and what happens if you separate.

Joint Tenants vs. Tenants in Common

When buying property with another person, you have two choices for how ownership is legally structured. These are nothing to do with renting — they're the legal terms for types of shared property ownership.

**Joint tenants** own the property equally as an indivisible whole. If one person dies, ownership passes automatically to the other (the right of survivorship), regardless of what any Will says. You cannot leave your share to anyone other than the surviving joint tenant.

**Tenants in common** own defined shares in the property. These shares don't have to be equal — one person might own 60% and the other 40%, for example, reflecting a larger deposit contribution. Each person can leave their share in their Will to whoever they choose. If one person dies, their share does not automatically pass to the survivor.

For most couples purchasing together, particularly those making unequal deposit contributions, tenants in common is the more appropriate structure. It allows you to record exactly who contributed what, which protects both parties if the relationship ends or if one person dies.

Your conveyancer will ask you to choose. Don't treat it as a formality — think about it carefully and, if your contributions are unequal, document what was agreed in a Declaration of Trust.

Declaration of Trust

A Declaration of Trust (also called a Deed of Trust) is a legal document that records the agreed shares of ownership and the basis on which they were calculated. It can also specify what happens in various scenarios: what if one person wants to sell and the other doesn't? What if one person stops contributing to the mortgage?

A Declaration of Trust costs £200–£500 to prepare through a solicitor. It is particularly important when:

• Contributions to the deposit are unequal
• One person's parents are contributing money toward the purchase
• One person earns significantly more and is expected to cover a larger share of costs
• Either party has existing property assets they want to protect

Without a Declaration of Trust, a court dispute about the property can become expensive and unpredictable. The document is cheap insurance.

Cohabitation Agreement

A cohabitation agreement is a broader legal document that sets out the arrangements between two people living together — including finances, property, and what happens if the relationship ends. Unlike marriage or civil partnership, cohabiting couples have very limited legal rights relative to each other in the event of separation, regardless of how long they've been together.

A cohabitation agreement can cover:

• Who owns what (if buying)
• How household bills and costs will be split
• What happens to assets each person brought into the relationship
• What happens to savings accumulated during the relationship
• What happens to the property if you separate

Like a Declaration of Trust, a cohabitation agreement is legal insurance. It doesn't mean you expect the relationship to fail; it means you're being sensible about protecting each other. Costs vary, but £300–£700 is typical for a professionally drafted agreement.

Splitting the Bills

The simplest and least contentious arrangement for splitting household costs is a joint account for household expenses, into which both people pay a fixed amount each month by standing order.

The key decisions are:

**Equal split or proportional to income?** Equal splits work well when income levels are similar. When one person earns significantly more, a proportional split based on income often feels fairer.

**What counts as a shared expense?** Mortgage, council tax, utilities, and shared food are typically included. Personal spending — clothing, personal subscriptions, hobbies — typically isn't.

**What happens to savings?** Decide whether you'll have joint savings or keep savings separate. There's no right answer, but it's worth agreeing rather than assuming.

Have this conversation before you move in and revisit it periodically. Financial disagreements are the most common source of relationship tension, and they're almost always rooted in unexpressed expectations rather than fundamental incompatibility.

Property Documents and Records

Once you've bought together, both of you have an interest in the property records being well-organised and accessible. Property Passport UK lets you both access the property's documents — including the title register, completion statement, Declaration of Trust, and any warranties or guarantees — so that neither person is dependent on the other for access to important records.

Moving in together is a significant milestone. The paperwork might seem unromantic, but sorting it properly at the start protects both of you and makes everything — from the mortgage to the eventual sale — considerably simpler.