Deed of Trust for Property: A Complete UK Guide for 2026
How a deed of trust protects unequal property ownership shares in the UK, what it covers, the tax angles, and how to set one up correctly in 2026.
Quick answer
A deed of trust is a legally binding document that records who really owns what share of a property and how the money is split when it is sold. It is used when co-owners put in unequal amounts - for example a larger deposit from one partner - and it sits alongside the legal title rather than replacing it. It protects each person's contribution and reduces the risk of disputes.
What a deed of trust actually is
A deed of trust, often called a declaration of trust, separates the two layers of property ownership in England and Wales. The first layer is legal ownership - whose names appear on the title register at HM Land Registry. The second layer is beneficial ownership - who is actually entitled to the value, the income, and the sale proceeds. A deed of trust documents that second layer in precise terms.
This matters because the legal title can show two names without saying anything about the split. Without a deed, the law may assume equal ownership, which is rarely what people intend when one person funded most of the deposit. The deed replaces assumption with a written record of intention.
It is most commonly used with a tenancy in common, where owners hold defined shares, rather than a joint tenancy, where they own the whole together. The two are usually set up at the same time during conveyancing.
When you need one
There are several situations where a deed of trust is the right tool:
- Unequal deposits. One partner pays a GBP 60,000 deposit, the other pays GBP 20,000, and they want this reflected if they ever sell.
- A parent or relative helping out. Family money goes into the purchase and the contributor wants it protected, recorded as either a loan or a share.
- Friends or siblings buying together. Co-buyers who are not in a relationship and want clear, enforceable rules.
- Buy-to-let with a partner. Owners who want income and gains split in a particular ratio for both fairness and tax planning.
- Unmarried couples. There is no automatic financial protection on separation, so the deed becomes the key evidence of who owns what.
What a deed of trust can set out
A good deed goes well beyond a single percentage. Depending on your circumstances it can record:
| Item | What it can specify |
|---|---|
| Initial shares | The exact percentage or fixed sum each owner is entitled to |
| Deposit contributions | Who paid what, and whether it is returned first on sale |
| Mortgage payments | How responsibility for the loan is divided |
| Ongoing costs | How repairs, improvements, and bills are shared |
| Sale proceeds | The order in which money is repaid and the final split |
| Buy-out terms | What happens if one owner wants to sell their share |
| Future contributions | How extra payments adjust the shares over time |
The more your contributions change over time, the more important it is to draft these rules carefully rather than relying on a fixed percentage.
How it affects tax
A deed of trust is not a tax avoidance scheme, but it does interact with three taxes. Treat each carefully, because this is a Your Money Your Life area where mistakes are expensive.
Income tax on rental property
For unmarried co-owners, rental profit is generally split according to beneficial ownership, so a deed fixing a 70/30 share means the income is reported in that ratio. The basic rate of Income Tax is 20% on income between GBP 12,571 and GBP 50,270, rising to 40% in the higher-rate band up to GBP 125,140 and 45% above that. Splitting income towards a lower earner can therefore reduce the overall bill.
For married couples and civil partners the default is different: jointly held property is taxed 50/50 regardless of the actual split, unless you both own it in unequal shares and submit Form 17 to HMRC within 60 days of signing it, with evidence such as the deed. Only then does income tax follow the real percentages.
Income Tax Calculator
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Open Income Tax calculatorCapital gains tax on a future sale
If the property is not your only or main home, Capital Gains Tax applies when you sell. Each owner is taxed on their share of the gain, can use their own annual exempt amount of GBP 3,000, and pays at 18% within the basic-rate band or 24% above it. A deed that splits ownership unequally changes how the gain - and those allowances - are divided between owners.
| Owner | Share | Annual exempt amount | Likely CGT rate |
|---|---|---|---|
| Higher earner | 30% | GBP 3,000 | 24% |
| Lower earner | 70% | GBP 3,000 | 18% or 24% depending on income |
Shifting more of the gain to a lower-income owner can use a lower CGT rate, but the result depends on each person's total income in the year of sale. Model it properly before you sell.
Capital Gains Tax Calculator
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Open Capital Gains Tax calculatorStamp duty on a transfer of equity
A deed of trust by itself does not trigger Stamp Duty Land Tax. The issue arises when you change the legal ownership and consideration passes - classically, when one person takes on a share of the mortgage in return for being added to the title. The amount of mortgage debt assumed counts as consideration and can fall within the SDLT bands.
The SDLT thresholds and bands change over time and are not covered by a single flat figure, so do not guess them. Check the current rules on gov.uk and run your numbers through a calculator before assuming there is nothing to pay. Scotland uses LBTT and Wales uses LTT, each with their own bands.
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Open Stamp Duty calculatorHow to set one up
The process is straightforward but should be done with care:
- Agree the terms. Sit down with your co-owners and decide the shares, how the deposit is treated, who pays the mortgage, and what happens on a sale or buy-out.
- Decide your ownership type. A deed of trust almost always goes with holding the property as tenants in common, so confirm this with your conveyancer.
- Instruct a professional. A solicitor or licensed conveyancer drafts the deed to match your agreement and ensures it is consistent with the mortgage and title.
- Execute it correctly. A deed must be in writing, signed, and witnessed. Incorrect execution can undermine it.
- Store it safely. Keep it with your title documents and tell your executors it exists. If you own as tenants in common, make sure your will reflects what happens to your share.
Joint tenants own the whole property together and the survivor inherits automatically, which suits many married couples who want simplicity. Tenants in common own distinct shares that pass under a will and can be recorded in a deed of trust, which suits unequal contributions, unmarried couples, and anyone who wants control over their share.
Common mistakes to avoid
- Relying on a verbal agreement. Without writing, you are back to legal assumptions and a potential court fight.
- Forgetting Form 17. Married couples lose the tax benefit of an unequal split if they do not file it within the deadline.
- Ignoring the mortgage lender. Lenders have a say in ownership changes and transfers of equity; involve them early.
- Letting the deed go stale. Update it when contributions, mortgages, or relationships change.
- Treating it as a will. A deed governs ownership in life; a will governs what happens on death. You usually need both, kept consistent.
The bottom line
A deed of trust is a low-cost, high-value document for anyone buying a property in unequal shares. It records the truth about ownership, protects each contribution, and sets clear rules for income, sale proceeds, and future changes. It interacts with income tax, capital gains tax, and potentially stamp duty, so model the numbers with the relevant calculators and take professional advice before you sign. Done properly, it turns a vague understanding into firm protection.
Frequently asked questions
What is a deed of trust for property?
A deed of trust (also called a declaration of trust) is a legal document that records how two or more people share the beneficial ownership of a property. It sets out who put in what, who owns what percentage, and how the proceeds are divided on a sale. It is separate from the legal title at the Land Registry and is especially useful where ownership is unequal, such as when one partner contributes a larger deposit.
Is a deed of trust legally binding in the UK?
Yes. A properly drafted and executed deed of trust is a legally binding document that the courts will generally uphold. To be valid it must be in writing, signed, and made as a deed (witnessed). Because it overrides assumptions about equal ownership, it provides strong evidence of the parties' true intentions if a dispute arises later, such as on a relationship breakdown or sale.
How much does a deed of trust cost?
Costs vary by solicitor and complexity. A straightforward deed recording fixed percentages typically costs a few hundred pounds, while one dealing with ongoing contributions, mortgage payments, or future events costs more. Always get a fixed-fee quote in writing. The cost is usually small compared with the value it protects if a relationship ends or a co-owner wants to sell.
Does a deed of trust avoid stamp duty?
No. A deed of trust records beneficial shares but does not by itself remove a Stamp Duty Land Tax charge. SDLT can arise where consideration is given - for example when one party takes on a share of the mortgage debt in exchange for a transfer of equity. The SDLT rules are complex and have several bands, so check the current thresholds on gov.uk or use the stamp duty calculator before assuming there is no charge.
Can a deed of trust change who pays tax on rental income?
For unmarried co-owners, rental income is generally split according to beneficial ownership, which a deed of trust can fix at unequal shares. For married couples and civil partners, income from jointly held property is taxed 50/50 by default unless you hold it in unequal shares and submit Form 17 to HMRC with evidence such as a deed of trust. Income tax then follows the declared split.
What is the difference between joint tenants and tenants in common?
Joint tenants own the whole property together with no distinct shares, and ownership passes automatically to the survivor on death. Tenants in common own defined shares that can be unequal and that pass under a will rather than automatically. A deed of trust is used with a tenancy in common to record exactly what those shares are, which is why the two usually go together.
Do I need a solicitor to make a deed of trust?
You are not legally required to use a solicitor, and template documents exist. However, because a deed must be executed correctly and because errors can be costly, most people use a solicitor or licensed conveyancer. Professional drafting is strongly advised where there is a mortgage, where contributions are ongoing, or where the parties want different rules for income, sale proceeds, and future top-ups.
Does a deed of trust affect capital gains tax?
It can. CGT on a property that is not your only or main home is charged on each owner's share of the gain. By fixing beneficial ownership at unequal percentages, a deed of trust changes how a future gain is divided between co-owners, and therefore how each person's annual exempt amount and CGT rate apply. Use the capital gains tax calculator to estimate the effect before you sell.
Can a deed of trust be changed later?
Yes, but all the parties to the original deed must agree to vary it, and the variation should itself be made as a properly executed deed. People often update a deed when contributions change, when a partner buys in or out, or when a mortgage is repaid. Keep the document with your other property papers and review it after any major change in circumstances.
Is a deed of trust the same as a will?
No. A deed of trust governs ownership shares during your lifetime and how proceeds are split on a sale. A will governs what happens to your assets when you die. If you own property as tenants in common, your share passes under your will, so the two documents work together. Holding both, and keeping them consistent, is sensible for anyone in a co-ownership arrangement.
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