Buying Out a Partner on a Mortgage: How It Works in the UK
To buy out a partner, you agree what their share of the home is worth, then arrange a mortgage in your sole name that covers it. Your lender must agree to the change, and it will check that you can afford the whole mortgage on your own income. Speak to a mortgage broker before you instruct a solicitor, because affordability is where most buy-outs succeed or stall.
We are a local mortgage broker in Hastings and St. Leonards-on-Sea, helping people across East Sussex, including Eastbourne, Hailsham and Bexhill-on-Sea, and clients elsewhere in the UK.
TL;DR
- Your lender decides whether the other person comes off the mortgage. A private agreement between you does not bind it.
- Lenders will assess your income and outgoings alone, so check your sole-name affordability before paying for legal work.
- Buying out usually means a remortgage plus a transfer of equity, and Stamp Duty Land Tax can apply, especially if you were not married or in a civil partnership.
- Self-employed and CIS income can be assessed differently by different lenders, so the choice of lender matters.
Table of Contents
- What buying out a partner actually involves
- A worked example
- Why the lender has the final say
- Check affordability before you pay for legal work
- If you are self-employed or a CIS subcontractor
- Stamp Duty Land Tax on a transfer of equity
- What if you cannot borrow enough alone?
- Our view
- Talk to a local broker before you commit
- FAQ
- Sources
What buying out a partner actually involves
When a couple own a home together, the title and the mortgage are both in joint names. Buying someone out means moving both into your sole name. As HM Land Registry explains, ownership has to be transferred from joint names to a sole name, and separating does not change the register by itself.
In practice there are three moving parts:
- A figure for your partner’s share. This is usually their share of the equity: the value of the home minus the mortgage, divided as you agree.
- A mortgage that covers the payment. This is normally a remortgage, sometimes with the same lender and sometimes with a new one, borrowing enough to pay your partner and clear the existing loan.
- A transfer of equity. A solicitor completes the legal paperwork that changes the ownership on the land register.
MoneyHelper lists buying the other person out as one of several options alongside selling the home or keeping joint ownership for a time. It is not always the right one, and it is worth knowing what the alternatives are before you commit.
A worked example
Suppose a home is valued at £300,000 with £180,000 left on the mortgage. That leaves £120,000 of equity. If you own it equally, your partner’s share is £60,000.
To keep the home you would need a new mortgage of around £240,000 (the £180,000 balance plus the £60,000 payment), before any fees. That is a bigger loan than before, on one income instead of two. The figures are illustrative only, and real numbers depend on the valuation, any early repayment charge on the current deal, and what you both agree.
If you are the one leaving, the same maths applies in reverse. You will want to be sure the payment is made and that your name comes off the mortgage.
Why the lender has the final say
This surprises many people. Even with a signed agreement or a court order, the lender is not obliged to release the person leaving. Citizens Advice makes clear that lenders will assess the person staying, using current evidence such as payslips or accounts.
Lenders in the UK are bound by the FCA’s responsible lending rules, which require them to assess affordability before agreeing a regulated mortgage. You can read the wording in MCOB 11.6 of the FCA Handbook. In short, a high level of equity does not replace an affordability check.
Until your partner is released, both of you remain liable. Citizens Advice describes this as joint and several liability: the lender can pursue either of you for the full debt, whatever you have agreed privately. That is why a clean break matters for both people’s credit files and future borrowing.
Check affordability before you pay for legal work
A common and costly mistake is to agree a figure and instruct a solicitor first. Citizens Advice warns against exactly this order: you can spend on conveyancing and then be declined for the sole-name mortgage.
A better order looks like this:
- Get a realistic valuation, ideally from a local estate agent or a surveyor.
- Find out your current mortgage balance and whether an early repayment charge applies.
- Speak to a broker about what you could borrow alone, and on which lenders’ criteria.
- Agree the buy-out figure with your partner, with legal advice where needed.
- Instruct a solicitor and complete the remortgage and transfer together.
The length varies. A remortgage alone can take weeks, and the transfer paperwork adds to that, so allow extra time if there is a fixed deal ending or a court timetable.
If you are self-employed or a CIS subcontractor
Many of the people we speak to in East Sussex work in construction, and their income does not look like a single monthly payslip. That does not rule out a buy-out, but the way the income is assessed matters a great deal.
- Self-employed and company directors: lenders typically look at accounts, tax calculations or both, and may average more than one year. Our page on self-employed and company director mortgages explains how we approach this.
- CIS subcontractors: some lenders may consider gross CIS earnings, evidenced by CIS vouchers or statements, when assessing affordability, subject to their own criteria. This does not increase your real income, and it does not guarantee a higher loan. Other lenders will work from net profit after expenses. See our CIS subcontractor mortgage page for more.
If your partner’s income made the old mortgage work, sole-name affordability is likely to be the main hurdle. Matching your income evidence to the right lender before you apply is often the biggest single factor.
Stamp Duty Land Tax on a transfer of equity
Tax catches people out. Under GOV.UK guidance on transferring ownership of property, Stamp Duty Land Tax may be due when you take on a share of a property and give something of monetary value in exchange. That includes taking over part of the mortgage, even when no cash changes hands.
Transfers under a formal divorce or dissolution agreement often fall outside the charge, but unmarried couples can find the mortgage share counts as chargeable consideration. Whether anything is due depends on the amount and the threshold in force at the time. Ask your solicitor to confirm the position for your transfer before you agree a figure.
There are also Land Registry fees and solicitor costs. The current scales are set out in the HM Land Registry fees guidance.
What if you cannot borrow enough alone?
It happens, and it is not the end of the road. The options below depend on your circumstances and each carries trade-offs. MoneyHelper covers several of them.
- A different lender. Criteria on income, self-employment and affordability vary, so a lender that declines one application may accept another.
- A longer term. This lowers the monthly payment but usually raises the total interest paid over the life of the loan.
- A guarantor or joint borrower sole proprietor arrangement. A relative backs the loan, which puts their finances at stake too.
- Interest-only for part of the loan. This reduces payments but needs a credible plan to repay the capital.
- Selling, or a staged arrangement. Sometimes a sale is the more sensible outcome for both people.
If you are thinking of raising the buy-out money through a second charge loan or by consolidating debts into the new mortgage, weigh it carefully. Securing more debt against your home means it is at risk if you cannot keep up repayments, and spreading debts over a longer term can cost more in total. We cover this balance in our guidance on second charge mortgages and secured loans.
Our view
We see buy-outs go well when people do things in the right order and keep the conversation practical. The first question is never “what is the house worth?” It is “what can you afford to hold alone?” The numbers can feel painful during a separation, so we explain each step, the costs and the risks plainly, and we say so when a buy-out may not be the best route.
We also encourage people to think beyond the mortgage. If a partner’s income is leaving the household, life insurance and income protection are worth reviewing, because the loan will now rest on one person. Advice is individual, and what suits one household can be wrong for another.
— Paul McMath CeMAP CeRER
Talk to a local broker before you commit
We are an independent firm based in St. Leonards-on-Sea, and we are available to meet or speak by phone or online. We can look at your income, whether employed, self-employed or paid through CIS, and explain which lenders may suit before you spend money on legal work. We can also arrange a mortgage affordability assessment and capacity report for a one-off fee of £199.00. If your current deal is ending, our remortgage service is a good starting point. We cannot promise approval or any particular rate, but we can help you understand your options.
FAQ
Can I buy my partner out if I am not married?
Yes. The process is the same: agree a figure, obtain a sole-name mortgage and complete a transfer of equity. The main difference is tax, as unmarried couples are less likely to benefit from the exemptions that can apply on divorce. Ask your solicitor to check the Stamp Duty Land Tax position.
Can the lender refuse to take my partner off the mortgage?
Yes. The lender must be satisfied you can afford the mortgage alone, and it can decline even where you have a private agreement or court order. If one lender says no, a broker can check whether another lender’s criteria fit your income better.
Do I need a solicitor?
In practice, yes. The land register only changes through a formal transfer, which a solicitor handles alongside the lender’s requirements. Speak to a broker first so you know the mortgage is achievable before you incur legal costs.
What happens if my partner stays on the mortgage but moves out?
They remain fully liable for the debt, and the mortgage stays on their credit file and affects their own borrowing. Missed payments by either of you can damage both credit records. This is why many people aim for a clean break once affordability allows.
Sources
- HM Land Registry: What happens to the family home in the event of a divorce
- MoneyHelper: Dividing the family home and mortgage during divorce or dissolution
- Citizens Advice: Dividing up money and belongings when you separate
- FCA Handbook: MCOB 11.6 Responsible lending
- Citizens Advice: What happens to your home when you separate
- GOV.UK: Stamp Duty Land Tax, transferring ownership of property
- GOV.UK: HM Land Registry registration services fees
- MoneyHelper
Recommended
- Spouse Visa Mortgages UK: What Lenders Need and When to Call an Adviser
- New Build Mortgages When Couples Put Down Different Deposits
- UK JBSP Mortgages: Who Owns the Home, Who Owes the Debt?
- Shared Ownership Mortgage Rules And Eligibility Guide
This article provides general information and is not a personal mortgage recommendation. Mortgage availability and eligibility depend on your circumstances and lender criteria. Rates and criteria can change. We will explain any applicable fees before you commit. Think carefully before securing other debts against your home. Consolidating debts over a longer term may reduce your monthly payments but increase the total amount you repay. Your home may be repossessed if you do not keep up repayments
