If you’re buying with a partner, friend or family member, a joint mortgage means you’re all named on the loan and every one of you is on the hook for the whole monthly payment, not just your “share”. That single fact, known as joint and several liability, shapes almost everything else in this guide: how much you can borrow, what happens if a relationship ends, and how your credit files get linked together. Below we’ll cover the rules, the ownership choice that matters far more than most buyers realise, and the exact process for removing someone’s name later on.
What a joint mortgage actually is
A joint mortgage is a single home loan taken out by two or more people together. Most UK lenders cap this at four borrowers, though not every lender goes that high, and Royal Bank of Scotland, for example, only offers joint mortgages to two people. <cite index=”2-1″>Co-borrowers can be family members, partners or friends, and everyone named on the mortgage is jointly liable for the full monthly payment.</cite>
You don’t need to be a couple. Friends buying together, siblings, a parent helping a child onto the ladder, or business partners investing in a property can all take out a joint mortgage. From the lender’s point of view, <cite index=”4-1″>the relationship between applicants is largely irrelevant. What matters is whether the repayments can be met, which is checked through affordability calculations and stress tests</cite>, and all applicants must be over 18.
Joint mortgage interest rates aren’t different from single-applicant rates. Pricing depends on loan-to-value, income and credit history, not on how many names are on the application.
Joint mortgage rules UK buyers need to know
A few standard rules apply across lenders:
- Everyone named must meet the lender’s criteria. Age, income, credit history and affordability checks apply to each applicant, and a poor credit history for one person can affect the whole application.
- Borrowing is usually based on combined income. Most lenders will let you borrow around 4 to 4.5 times your joint annual income, though this varies by lender and by how much you’re putting down as a deposit.
- Ownership doesn’t have to be 50/50. How much of the property each person owns is a separate legal question from how the mortgage debt is split, and it’s decided by your ownership structure (see below), not by the mortgage lender.
- You can pay from one account. <cite index=”55-1″>The lender doesn’t care who actually makes the payment, only that the full amount arrives on time each month.</cite> Splitting who pays what is a private arrangement between you.
- Joint borrower sole proprietor (JBSP) mortgages exist. <cite index=”6-1″>This is a mortgage taken out with another person who has no ownership of the property. They’re jointly responsible for the payments but not named on the deeds, and must still meet all lending criteria.</cite> Not every lender offers this; it’s typically used by parents helping a child buy without taking a share of the home.
Joint and several liability: the part people misunderstand
This is the single most important rule in this guide. When you sign a joint mortgage, you become “jointly and severally liable” for the debt. In practice that means:
- The lender can chase any one of you for the entire outstanding balance, not just an equal share.
- If your co-borrower stops paying, you are legally required to cover the full payment yourself, even if you’ve moved out or never lived there.
- Missed payments show up on both credit files, regardless of who was supposed to be paying.
- Your liability continues until the mortgage is repaid in full or a name is formally removed from the loan (via transfer of equity, covered further down).
This wording comes straight from standard mortgage deed terms, which is why solicitors describe it in near-identical language: <cite index=”52-1″>if your ex-partner stops paying, you become liable for the full monthly payment, not just your half, and missed payments affect both parties’ credit scores equally regardless of who missed the payment.</cite> <cite index=”51-1″>The lender can also take both owners to court to obtain a repossession and sale order, with interest and legal charges continuing to accrue on the debt in the meantime.</cite>
If you’re worried a joint borrower might stop contributing, don’t rely on a verbal agreement. A solicitor-drawn Deed of Trust, setting out who pays what and what happens on default, won’t stop the lender chasing you both, but it gives you a clear legal basis to recover money from your co-borrower afterwards.
Joint tenants vs tenants in common: why the choice matters
This is a separate decision from the mortgage itself, and it’s the one that catches people out most often. When you buy a property with someone else, you choose how you hold the legal title: as joint tenants or as tenants in common. This choice determines what happens to the property on death, on sale, and often on separation.
Joint tenants
- Each person owns 100% of the property together, rather than a fixed percentage each.
- You must hold equal shares. You can’t be joint tenants with a 70/30 split.
- Right of survivorship applies. If one owner dies, their share passes automatically to the surviving owner(s), regardless of what their will says.
- This is the default most lenders assume for married couples and civil partners, though it isn’t automatic and you should still confirm it with your conveyancer.
Tenants in common
- You each own a defined, separate share of the property, which can be equal or unequal (say, 70/30 if one person put in a bigger deposit).
- There’s no automatic right of survivorship. Your share forms part of your estate and passes according to your will, or under intestacy rules if you don’t have one.
- This is the more common choice for friends, siblings, unmarried couples putting in different amounts, or anyone who wants their share to go somewhere specific rather than automatically to the co-owner.
Why this trips people up on death
If you’re joint tenants and one of you dies without changing this, the survivor automatically owns the whole property, even if a will says otherwise. A solicitor’s guide gives a stark real-world example: a divorcing couple who’d agreed a financial settlement but never got round to the paperwork. <cite index=”36-1″>One party died before the joint tenancy was formally severed, and because of that, the other party inherited the entire share despite the financial settlement stating otherwise, leaving the deceased’s own children with nothing.</cite>
The fix, if your circumstances change (separation, remarriage, wanting to leave your share to children from a previous relationship), is to sever the joint tenancy and convert to tenants in common. Crucially, divorce does not do this automatically.
Why it matters on separation
If you’re tenants in common, dividing the property on separation is usually more straightforward because your respective shares are already defined (or can be, via a Deed of Trust). If you’re joint tenants, you own the whole thing equally and jointly, which can make negotiating who gets what, or forcing a sale, more contentious without clearer documentation.
How to sever a joint tenancy
- Serve a Notice of Severance on the other joint tenant(s) in writing. This can be a solicitor-drafted letter citing Section 36(2) of the Law of Property Act 1925.
- Send it by recorded delivery to their home address and keep proof of postage. The severance takes legal effect when the notice is delivered, even if the other person doesn’t open it or doesn’t agree.
- Register the change with HM Land Registry using Form A restriction, application form SEV. This is free to submit and confirms the property is now held as tenants in common on the register.
- Consider a Deed of Trust to record what percentage share each of you now owns, particularly if contributions were unequal
How many people can be on a mortgage
Most residential mortgage lenders allow up to four people to be named on a single mortgage, though not all lenders offer this. Some, like RBS, only do joint mortgages for two. If you’re buying with three or four friends or family members, it’s worth checking directly with a broker early on, because product availability narrows considerably above two applicants, and every named person still has to pass affordability and credit checks individually.
Only up to four names can go on the legal title at HM Land Registry too, even if more than four people have a financial stake in the property (via a separate Deed of Trust arrangement, for example).
Joint mortgage credit file linking
Taking out a joint mortgage creates a financial association between you and your co-borrower(s) on your credit file, held by Experian, Equifax and TransUnion. <cite index=”44-1″>This is a formal link visible to any lender who searches your credit report, and it means that when you apply for credit in future, a lender may also consider the credit record of anyone you’re financially linked to.</cite> If your co-borrower has a poor credit history, it genuinely can affect your own ability to get approved for other borrowing.
This link doesn’t disappear just because you separate or stop living together. <cite index=”44-1″>Even if you separate your finances entirely, the association stays on your file unless you actively file a notice of disassociation with each credit reference agency.</cite>
To break the link:
- Close every joint financial product first. This includes the mortgage itself (via transfer of equity, remortgage, or sale), joint bank accounts, joint credit cards, and joint utility accounts. <cite index=”41-1″>All joint accounts must be closed before disassociation can be issued, and if anything is still active, the request won’t succeed.</cite>
- Apply to each credit reference agency separately. A disassociation with one agency doesn’t carry over to the others. <cite index=”40-1″>You can request a notice of disassociation from Experian using its online form, and from TransUnion by email.</cite> Equifax requires its own downloadable form.
- Expect it to take around a month. <cite index=”39-1″>The process usually takes a month or two before all records held by the credit reference agencies are updated.</cite> Afterwards, <cite index=”39-1″>the other person’s credit history can no longer be taken into account by lenders assessing your report.</cite>
One nuance: <cite index=”42-1″>an “associate search” (where a lender checks your linked party’s file when you apply for credit) still isn’t the same as a joint application, and these entries remain on file for 12 months before dropping off automatically.</cite>
Coming off a joint mortgage: transfer of equity
If you want to remove a name from a joint mortgage, either because you’re buying your ex-partner out or they’re buying you out, this is done through a process called a transfer of equity, not a full house sale.
What a transfer of equity involves
<cite index=”14-1″>A transfer of equity changes the legal ownership of a property without a full sale taking place, and at least one of the original owners must remain on the title for it to count as a transfer of equity rather than a straightforward sale.</cite> The process:
- Get lender consent first. The remaining owner(s) usually need reassessing for affordability on their own, since they’re taking on the mortgage debt solo or with a smaller group.
- Agree the transfer value. <cite index=”14-1″>This figure determines any Stamp Duty liability and any Capital Gains Tax exposure if the property isn’t your main residence.</cite>
- Sign the TR1 deed. <cite index=”14-1″>All current and incoming owners sign the TR1 transfer deed in front of a witness, and any agreed payment or mortgage debt transfer takes place at this point.</cite>
- Pay Stamp Duty if it’s due, via your conveyancer’s SDLT return (or LBTT in Scotland, LTT in Wales), within the statutory deadline.
- Register with HM Land Registry. <cite index=”14-1″>The new ownership is reflected on the register, usually within a few weeks.</cite>
What it costs
- Solicitor’s fees: typically £200 to £600, though more complex cases (leasehold flats, multiple parties, an existing declaration of trust to unwind) can push this to £1,000 or more.
- Land Registry fee: ranges from around £20 to over £900 depending on the property’s value, payable when you submit online, with postal applications costing roughly double.
- Search and ID check fees: usually a small additional sum, often under £50 in total, for identity verification and any lender-required searches.
Stamp Duty on a transfer of equity
This is the part people most often get wrong. You only pay Stamp Duty Land Tax if the “chargeable consideration” exceeds the current nil-rate threshold of £125,000 (standard rate, England and Northern Ireland, since 1 April 2025). Chargeable consideration includes any cash paid and any share of the outstanding mortgage debt the incoming or remaining owner takes on.
Example: a property is worth £400,000 with a £200,000 mortgage outstanding. One partner is being added to the title and takes on 50% of the mortgage, so £100,000 of debt. That £100,000 is treated as the consideration for SDLT purposes. If they’re a first-time buyer, they’d likely pay nothing, since <cite index=”17-1″>it falls below the nil-rate band threshold for first-time buyers.</cite> If they already own another property, though, the additional-property surcharge may apply on top.
Since April 2025, the standard SDLT bands in England and Northern Ireland are: 0% up to £125,000, 2% from £125,001 to £250,000, 5% from £250,001 to £925,000, 10% from £925,001 to £1.5 million, and 12% above that. First-time buyers pay 0% up to £300,000 and 5% on the portion between £300,001 and £500,000, with no relief available above £500,000. Scotland uses Land and Buildings Transaction Tax and Wales uses Land Transaction Tax, both with different thresholds, so check the relevant devolved calculator if the property isn’t in England or Northern Ireland.
A word of caution: Stamp Duty rules on transfers between separating or divorcing couples have specific reliefs and exemptions that don’t apply to unmarried co-owners in the same way. Rates and thresholds also change with Budgets, so confirm the current figures with HMRC’s SDLT calculator or your conveyancer before you proceed, rather than relying on any figure in this article by the time you read it.
When a relationship ends and one party stops paying
This is where joint and several liability really bites, and it’s worth being blunt about it.
Your ex cannot simply walk away from the mortgage by moving out. Whether they live in the property or not, whether the mortgage was based on their income or yours, and whatever you’ve privately agreed between yourselves, <cite index=”54-1″>the lender has the right to chase both parties, either jointly or individually, for the payments, plus any costs, legal fees or losses from a possible repossession.</cite> Any refusal to pay damages both credit files, not just the absent party’s.
If you find yourself covering the whole payment alone:
- Contact your lender immediately, even before you miss a payment. <cite index=”49-1″>If you can’t pay the full amount, pay as much as you can, since this shows the lender you’re willing to put things right and could delay or stop repossession action.</cite>
- Get free debt advice from Shelter, Citizens Advice or StepChange (0800 138 1111) before things escalate. They can help you understand options like a payment holiday, switching to interest-only temporarily, or extending the term.
- Consider your legal options for recovering the shortfall from your ex-partner, particularly if you have a Deed of Trust. Without one, recovering money paid on their behalf can be harder and may need a solicitor.
- Don’t assume separation, or even divorce, changes who’s liable. <cite index=”53-1″>Divorce does not automatically divide your debts. If you have a joint mortgage, both of you remain liable to the lender regardless of what you privately agree, and the only way to properly separate your finances is through a financial consent order approved by the court, or by removing a name via transfer of equity.</cite>
- If you’re the one being pushed out and can’t get your name removed quickly, take advice on your occupation rights. Both joint tenants and tenants in common generally have <cite index=”7-1″>a legal right to remain in the property unless a court order says otherwise.</cite>
If repossession genuinely becomes a risk, both credit files take the hit and the lender’s losses (including legal costs and any shortfall from a forced sale) can be pursued from either party for years afterwards. Acting early, and getting the ownership and liability paperwork straight before things break down, is far cheaper than sorting it out afterwards.
FAQs
Can I get a joint mortgage with someone who isn’t my partner?
Yes. UK lenders don’t require joint borrowers to be in a relationship. Friends, siblings, parents and children, and business partners can all apply together, provided everyone meets the lender’s affordability and credit criteria. The main practical difference is that ownership shares are usually set up as tenants in common with defined percentages, rather than the equal joint tenancy many couples default to.
Does a joint mortgage mean equal ownership?
Not necessarily. The mortgage debt is jointly and severally owed regardless of your ownership split, but who owns what percentage of the property is a separate decision made through your choice of joint tenants or tenants in common, or set out in a Deed of Trust.
What happens to a joint mortgage if one person dies?
It depends on your ownership type. If you’re joint tenants, the surviving owner automatically becomes sole owner and takes on the mortgage. If you’re tenants in common, the deceased’s share becomes part of their estate and is distributed under their will, or intestacy rules if there isn’t one, while the mortgage debt itself remains payable by the surviving borrower(s).
Can one person be removed from a joint mortgage without selling the house?
Yes, through a transfer of equity. The remaining owner needs to be reassessed by the lender for affordability on their own, sign a new transfer deed (TR1), and register the change with HM Land Registry. Stamp Duty may be due depending on the value of the debt or equity being taken on.
Do joint mortgage rates cost more than a sole mortgage?
No. Joint mortgage interest rates aren’t priced differently from single-applicant rates. What you pay depends on loan-to-value, income, and credit history, not on the number of names on the application.
Will a joint mortgage affect my credit score even if I always pay on time?
It creates a financial association with your co-borrower, meaning lenders assessing your future credit applications may also look at their credit history. Your own payment record isn’t damaged by their unrelated borrowing, but a poor credit history on their part can still influence a lender’s decision on you.
How do I remove a financial association from my credit file after a joint mortgage ends?
Close every joint financial product first, then apply separately to Experian, Equifax and TransUnion for a notice of disassociation. Each agency has its own process and it typically takes around a month to complete. The link won’t disappear on its own just because the mortgage itself has been transferred or repaid.
Can my ex stop paying and just leave me with the whole mortgage?
They can stop paying, but they remain legally liable for the debt even after moving out. You’d become responsible for covering the full payment to protect the property from arrears, but you can pursue your ex-partner separately for their share, ideally with a Deed of Trust or court order to back up the claim.
What’s the difference between joint tenants and tenants in common in practice?
Joint tenants own the whole property together with automatic survivorship on death and must hold equal shares. Tenants in common own defined, possibly unequal shares that pass through their will or intestacy rules rather than automatically to the co-owner. Most unmarried couples and friends buying together choose tenants in common for this reason.
How many people can be named on one mortgage?
Most lenders allow up to four, though some cap it at two, so check with a broker if you’re buying with more than two other people. All named borrowers must individually pass the lender’s age, income and credit checks.
