Weddings and Relationships Money Guide UK 2026 — Planning, Costs and Finance

Moving In Together Finances UK — Money Checklist for Couples

Complete guide to finances when moving in with partner UK. Joint accounts, bills, rent/mortgage, protecting your money, and what to discuss before cohabiting.

Start here: Weddings and Relationships Hub.

Moving in together is exciting but needs financial planning. Here’s your complete guide.

Before You Move In

The Money Conversation

TopicDiscuss
IncomeWhat you each earn
DebtsAny loans, credit cards, student loans
Credit scoresBoth check yours
Spending habitsSaver vs spender
Financial goalsShort and long-term
Attitudes to moneyHow you were raised

Why It Matters

IssueConsequence
Hidden debtsStrain relationship
Different valuesArguments
No planResentment
Open discussionPrevents problems

Splitting Costs

Common Approaches

MethodHow It Works
50/50 splitEverything divided equally
ProportionalSplit by income ratio
One pays, one savesE.g., rent vs bills
Pooled incomeEverything shared

Proportional Split Example

PersonIncome% of TotalMonthly Bills £2,000
Partner A£40,00057%£1,140
Partner B£30,00043%£860
Total£70,000100%£2,000

What to Include

CategoryItems
HousingRent/mortgage
BillsEnergy, water, council tax
InsuranceContents, buildings
Broadband/TVSubscriptions
GroceriesFood shopping
PersonalUsually kept separate

Bank Account Options

Approaches

ApproachHow It Works
Fully jointAll income paid in, all spending from joint
Joint for billsBoth keep personal, contribute to joint for bills
Completely separateTransfer shares of bills
Yours, mine, oursThree accounts

Opening a Joint Account

What to KnowDetails
Both namedFull access each
Either can spendTrust required
Credit linkedBoth credit files affected
ClosingBoth must agree

Best Banks for Joint Accounts

FeatureOptions
TraditionalMost high street banks
DigitalMonzo, Starling joint accounts
App featuresPot/space for bills
SwitchingMove for bonuses

Renting Together

Joint Tenancy

FeatureImplication
Both on leaseBoth fully liable
One leavesOther must pay full rent
Landlord can chaseEither of you
DepositsUsually joint

Protecting Yourself

ActionWhy
Both on tenancyOtherwise no rights
Record contributionsProof of payment
Deposit splitAgree and note shares
Exit strategyDiscuss break clause use

If You Split Up (Renting)

SituationOptions
Both want to leaveGive notice together
One staysNew tenancy or remove name
Fixed termBoth liable until end
Contact landlordEarly about changes

Buying Together (Unmarried)

Joint Ownership Types

TypeHow It Works
Joint tenantsEqual shares, survivor inherits
Tenants in commonCan be unequal, goes to estate
Common for unmarriedTenants in common

Declaration of Trust

What It IsProtection
Legal documentStates ownership shares
RecordsWho paid what deposit
SpecifiesWhat happens if you split
EssentialFor unequal contributions

Example Situation

ContributionsWithout TrustWith Trust
You: £50,000 deposit50% each (as joint tenants)70% you, 30% them (specified)
Partner: £10,000 depositYou lose £20,000Protected

Getting a Joint Mortgage

ConsiderationDetail
Both responsibleFor 100% of debt
Both creditworthyNeed good scores
AffordabilityBased on joint income
If one defaultsOther must pay all

Cohabitation Agreements

What They Cover

AreaSpecifies
Asset ownershipWho owns what
Property sharesSplit if you separate
DebtsWho pays what
BillsContribution agreement
PetsWho keeps them

Getting One

MethodCost
Solicitor drafted£500-1,500
Online templateCheaper but less tailored
Each needs adviceIndependent solicitor
Regular reviewAs circumstances change

Why Important

Legal RealityUK Law
No common law marriageDoesn’t exist
Unmarried rightsVery limited
Long-term cohabitingStill no automatic rights
Protection neededAgreement provides it

Bills and Admin

Whose Name?

Bill TypeConsider
Council TaxJoint liability anyway
EnergyEither or joint
WaterOccupier liable
BroadbandBest deal seeker
TV LicenceAddress-based

Practical Tip

ApproachBenefit
Split main accountholdersNot all in one name
Build creditBoth get credit history
If you splitEasier to divide

Credit Implications

Financial Association

What HappensWhen
Joint accountCreates financial link
Joint creditLinks credit files
Their debtCan affect your applications
Their poor creditMay impact you

Protecting Your Credit

ActionWhy
Check their credit firstBefore joint products
Consider separate creditCards, loans
Monitor your fileFor issues
If you splitDisassociate through credit agencies

Emergency Fund

Joint vs Separate

ApproachPros
Joint emergency fundBoth contribute, both benefit
Separate fundsIndependence
CombinationJoint for shared, personal for individual

How Much

GuidelineAmount
3-6 months expensesStandard advice
Shared monthly costs~£2,000 × 3-6
Target£6,000-12,000 joint

Children Together

Additional Considerations

If Having ChildrenThink About
Parental responsibilityUnmarried fathers must register
WillsWho children go to
Life insuranceCover each other
Increased costsChildcare, etc.

Summary

Checklist Before Moving In

ActionDone?
Have money conversation
Check credit scores
Agree on split approach
Open joint account (if wanted)
Set joint budget

Checklist If Buying

ActionDone?
Agree ownership shares
Get declaration of trust
Choose tenants in common
Update wills
Life insurance for mortgage

Key Points

AreaRecommendation
CommunicationOpen and honest
DocumentationProtect unequal contributions
CreditUnderstand link implications
Legal rightsLimited for cohabitees
AgreementConsider cohabitation agreement

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Sources

  1. MoneyHelper — Everyday money