Banking
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.
23 March 2026
·
4 min read
Moving in together is exciting but needs financial planning. Here’s your complete guide.
Before You Move In
The Money Conversation
Topic
Discuss
Income
What you each earn
Debts
Any loans, credit cards, student loans
Credit scores
Both check yours
Spending habits
Saver vs spender
Financial goals
Short and long-term
Attitudes to money
How you were raised
Why It Matters
Issue
Consequence
Hidden debts
Strain relationship
Different values
Arguments
No plan
Resentment
Open discussion
Prevents problems
Splitting Costs
Common Approaches
Method
How It Works
50/50 split
Everything divided equally
Proportional
Split by income ratio
One pays, one saves
E.g., rent vs bills
Pooled income
Everything shared
Proportional Split Example
Person
Income
% of Total
Monthly Bills £2,000
Partner A
£40,000
57%
£1,140
Partner B
£30,000
43%
£860
Total
£70,000
100%
£2,000
What to Include
Category
Items
Housing
Rent/mortgage
Bills
Energy, water, council tax
Insurance
Contents, buildings
Broadband/TV
Subscriptions
Groceries
Food shopping
Personal
Usually kept separate
Bank Account Options
Approaches
Approach
How It Works
Fully joint
All income paid in, all spending from joint
Joint for bills
Both keep personal, contribute to joint for bills
Completely separate
Transfer shares of bills
Yours, mine, ours
Three accounts
Opening a Joint Account
What to Know
Details
Both named
Full access each
Either can spend
Trust required
Credit linked
Both credit files affected
Closing
Both must agree
Best Banks for Joint Accounts
Feature
Options
Traditional
Most high street banks
Digital
Monzo, Starling joint accounts
App features
Pot/space for bills
Switching
Move for bonuses
Renting Together
Joint Tenancy
Feature
Implication
Both on lease
Both fully liable
One leaves
Other must pay full rent
Landlord can chase
Either of you
Deposits
Usually joint
Protecting Yourself
Action
Why
Both on tenancy
Otherwise no rights
Record contributions
Proof of payment
Deposit split
Agree and note shares
Exit strategy
Discuss break clause use
If You Split Up (Renting)
Situation
Options
Both want to leave
Give notice together
One stays
New tenancy or remove name
Fixed term
Both liable until end
Contact landlord
Early about changes
Buying Together (Unmarried)
Joint Ownership Types
Type
How It Works
Joint tenants
Equal shares, survivor inherits
Tenants in common
Can be unequal, goes to estate
Common for unmarried
Tenants in common
Declaration of Trust
What It Is
Protection
Legal document
States ownership shares
Records
Who paid what deposit
Specifies
What happens if you split
Essential
For unequal contributions
Example Situation
Contributions
Without Trust
With Trust
You: £50,000 deposit
50% each (as joint tenants)
70% you, 30% them (specified)
Partner: £10,000 deposit
You lose £20,000
Protected
Getting a Joint Mortgage
Consideration
Detail
Both responsible
For 100% of debt
Both creditworthy
Need good scores
Affordability
Based on joint income
If one defaults
Other must pay all
Cohabitation Agreements
What They Cover
Area
Specifies
Asset ownership
Who owns what
Property shares
Split if you separate
Debts
Who pays what
Bills
Contribution agreement
Pets
Who keeps them
Getting One
Method
Cost
Solicitor drafted
£500-1,500
Online template
Cheaper but less tailored
Each needs advice
Independent solicitor
Regular review
As circumstances change
Why Important
Legal Reality
UK Law
No common law marriage
Doesn’t exist
Unmarried rights
Very limited
Long-term cohabiting
Still no automatic rights
Protection needed
Agreement provides it
Bills and Admin
Whose Name?
Bill Type
Consider
Council Tax
Joint liability anyway
Energy
Either or joint
Water
Occupier liable
Broadband
Best deal seeker
TV Licence
Address-based
Practical Tip
Approach
Benefit
Split main accountholders
Not all in one name
Build credit
Both get credit history
If you split
Easier to divide
Credit Implications
Financial Association
What Happens
When
Joint account
Creates financial link
Joint credit
Links credit files
Their debt
Can affect your applications
Their poor credit
May impact you
Protecting Your Credit
Action
Why
Check their credit first
Before joint products
Consider separate credit
Cards, loans
Monitor your file
For issues
If you split
Disassociate through credit agencies
Emergency Fund
Joint vs Separate
Approach
Pros
Joint emergency fund
Both contribute, both benefit
Separate funds
Independence
Combination
Joint for shared, personal for individual
How Much
Guideline
Amount
3-6 months expenses
Standard advice
Shared monthly costs
~£2,000 × 3-6
Target
£6,000-12,000 joint
Children Together
Additional Considerations
If Having Children
Think About
Parental responsibility
Unmarried fathers must register
Wills
Who children go to
Life insurance
Cover each other
Increased costs
Childcare, etc.
Summary
Checklist Before Moving In
Action
Done?
Have money conversation
☐
Check credit scores
☐
Agree on split approach
☐
Open joint account (if wanted)
☐
Set joint budget
☐
Checklist If Buying
Action
Done?
Agree ownership shares
☐
Get declaration of trust
☐
Choose tenants in common
☐
Update wills
☐
Life insurance for mortgage
☐
Key Points
Area
Recommendation
Communication
Open and honest
Documentation
Protect unequal contributions
Credit
Understand link implications
Legal rights
Limited for cohabitees
Agreement
Consider cohabitation agreement