We explain, in plain English, what HMRC expects from trustees when reporting trust income and gains. Our aim is to keep things simple and practical so you can act with confidence.
We’ll use a real-life example — a family discretionary trust that helps pay grandchildren’s education costs — so the steps feel practical instead of abstract.
Over each tax year you will need to register the trust on the Trust Registration Service (TRS), track income and report gains. Missing a filing can bring penalties, even if no tax is actually due.
We outline the key moving parts: registering the trust, keeping records, meeting deadlines and spotting common slip-ups such as small interest payments or overseas income that trustees often overlook.
We also clarify what sits with trustees and what sits with beneficiaries, so you can protect the family and avoid unwelcome letters from HMRC.
For a step-by-step companion, see our short register a trust guide which walks through forms and services you will meet.
Key Takeaways
- Trustees must report trust income and gains under Self Assessment when HMRC issues a notice to file — or when reporting thresholds are met.
- Register on the TRS within 90 days of creating the trust and keep the register updated throughout the year.
- Watch for small or foreign income that is often missed but still reportable.
- Meet deadlines to avoid penalties, even if no tax is due.
- Understand trustee tax responsibilities versus beneficiaries’ own obligations — the trust type determines who pays what.
How UK trusts are taxed and why trustees must report
We start with a clear, everyday definition so you can see how reporting links to real family choices.
A trust is a legal arrangement — not a separate legal entity — where a settlor transfers assets to trustees who hold and manage them for the benefit of named beneficiaries. England invented trust law over 800 years ago, and this distinction matters: a trust has no legal personality of its own. The trustees are the legal owners of the trust assets and must manage, invest and report income and gains properly. This role includes legal obligations to keep records and to declare amounts to HMRC each tax year.
The type of trust determines who pays what tax. Bare trusts are the simplest: the beneficiary is treated as owning the assets directly, so income and gains are taxed in the beneficiary’s hands at their personal rates. Interest in possession trusts place income on the life tenant (the person entitled to receive income from the trust). Discretionary trusts are different — and by far the most common type used in family estate planning (roughly 98–99% of family trusts we see). Trustees pay tax at higher trust rates and must record distributions carefully. Beneficiaries who receive payments may need to report that income themselves and can claim a tax credit for tax already paid by the trustees.
Discretionary trusts often create more reporting work. That’s because the trustees decide who gets what and when — no beneficiary has an automatic right to income or capital. This flexibility is a key protection mechanism for the family, but it triggers more detailed reporting and potentially higher tax charges. Accurate reporting avoids disputes and unexpected tax bills later. For a practical outline of responsibilities, see the official guidance on trusts and trustees’ responsibilities.
Registering the trust with HMRC before you file
Getting the trust entered on the register early keeps paperwork simple and reduces later problems.
What the Trust Registration Service (TRS) is
The TRS is HMRC’s official register where most express trusts must be recorded. This requirement comes from the 5th Money Laundering Directive and is about transparency: HMRC needs to know who controls and benefits from a trust. Importantly, the TRS register is not publicly accessible — unlike Companies House — so your family’s details remain private.
Express trusts and who usually needs to register
An express trust is one created deliberately — typically through a written trust deed. Most family trusts fall into this category. Since 2022, virtually all UK express trusts must register on the TRS, even if no tax is due. This applies to bare trusts, discretionary trusts, interest in possession trusts and most other lifetime or will trusts. Only a small number of exemptions exist (for example, certain pension trusts, charitable trusts registered with the Charity Commission, and trusts imposed by court order).
Unique Taxpayer Reference (UTR) and filing
You must obtain a UTR for the trust before submitting any SA900 returns. The UTR is issued through the TRS registration process and links the trust to all future filings and correspondence with HMRC.
TRS updates and the 90‑day rule
- Trusts created on or after 1 September 2022 must generally register within 90 days of creation.
- Update the TRS within 90 days of any changes — for example, changes to trustees, beneficiaries, the settlor’s details or contact information.
- Keeping the TRS current is a legal obligation and lowers the risk of compliance issues and potential penalties.
For a practical walkthrough of registration steps, see our guide on registering a trust as an agent.
Do you need to file a Trust and Estate Tax Return (SA900)?
We’ll keep this practical. The SA900 is the main form trustees use to report a trust’s income, gains and any tax liability for the tax year. It gives HMRC a complete picture of the trust’s financial activity.
When a filing is expected and the £500 trigger point
You must complete an SA900 if HMRC issues a notice to file. Even without a notice, trustees should be aware of the informal £500 trigger — if the trust’s gross income before expenses and tax exceeds £500 in the tax year, or if there are chargeable gains, you should expect to file. Some trusts with income below this may still need to file if HMRC has issued a notice, so always check.
Who acts as the single contact
When several trustees act together, one should be nominated as the principal acting trustee. This person is the main point of contact for HMRC correspondence and takes responsibility for meeting filing deadlines. The other trustees remain jointly liable, but having a single contact helps avoid missed letters and duplicate filings. Remember, a trust must have a minimum of two trustees, so agreeing clear roles at the outset is important.
“Even if no tax appears due, failing to file when HMRC has asked you to can bring penalties. Treat every notice to file seriously.”
- A filing obligation can apply even to trusts with simple affairs — including those holding only a savings account.
- Typical triggers include bank interest, dividends, rental income, and capital disposals (for example, selling a property or shares held in trust).
- Keep a short checklist and clear records to reduce workload and limit personal liability as trustee.
Getting your records ready for the tax year
A clear, month-by-month record lets you spot income, rental receipts and capital events as they occur.
Income evidence to gather
Collect bank statements, savings interest certificates and dividend vouchers as you receive them throughout the year.
For rental income, keep schedules showing gross receipts and allowable expenses such as insurance, agent fees, repairs and maintenance. Save receipts for all work carried out and invoices from tradespeople.
Capital transactions and disposal paperwork
Save sale contracts, transfer deeds (such as a TR1 for property transfers), share sale confirmations and any professional valuation reports. These prove dates and values when gains arise and are essential if HMRC ever queries a return.
Practical record-keeping habits
Simple habits make a real difference. Use one folder per tax year — physical or digital. Download bank statements monthly rather than scrambling at year-end. Keep a running log of trustee decisions, distributions to beneficiaries, and any changes to trust assets. As Mike Pugh says, “Plan, don’t panic” — steady habits now make compliance straightforward later.
“Good records mean the right amounts reach beneficiaries on time — and that you can answer any HMRC query quickly and confidently.”
| Item | Keep | Why | Example |
|---|---|---|---|
| Interest | Bank certificates/statements | Shows income amount and date received | Annual savings interest certificate |
| Foreign income | Original statement + exchange rate | Convert to sterling at date of receipt | HMRC exchange rate or bank FX record |
| Capital disposals | Sales contracts and completion statements | Proves disposal date & value for gains | Property sale completion statement |
HMRC expects trustees to retain records for at least six years after the end of the relevant tax year. For a practical worksheet on valuations and dates see: records checklist and guidance.
Working out trust income tax and allowances
Before you calculate what’s owed, first separate income by type so you apply the correct rate. Getting the categorisation right makes the calculations straightforward and reduces errors when you check the final liability.
Interest in possession trust rates (2024/25)
Interest in possession trusts pay tax at the basic rate: 20% on non-dividend income (such as interest, rent and trading income) and 8.75% on dividend income for 2024/25. In practice, the income is treated as belonging to the life tenant — so trustees pay at these rates, and the life tenant reports the income on their own Self Assessment return, receiving credit for tax already paid by the trust. If the life tenant is a higher-rate taxpayer, they will have further tax to pay; if they are a non-taxpayer, they can reclaim some or all of the tax paid by the trustees.
Discretionary trust rates (2024/25)
Discretionary trusts pay at the trust rate: 45% on non-dividend income and 39.35% on dividend income. These are the highest rates, reflecting the fact that no specific beneficiary has an automatic right to the income. The first £1,000 of trust income (the “standard rate band”) is taxed at the basic rate of 20% (or 8.75% for dividends) before the higher trust rates apply. Trustees cannot claim a personal allowance — this is one of the key differences between trust and individual taxation.
The £1,000 standard rate band and multi-trust splitting
The £1,000 standard rate band allows the first slice of discretionary trust income to be taxed at basic rate rather than the trust rate. However, if the same settlor created more than one trust, this band is divided equally between them — with a minimum of £200 per trust. For example, if one settlor created three discretionary trusts, each trust would have a standard rate band of £333. Trustees should keep a clear record of the allocation and apply it consistently year on year.
Dividend allowance and practical checks
Important: trustees cannot claim the personal dividend allowance (currently £500 for individuals). Do not assume individual reliefs or allowances apply to trust income — they generally do not. Trustees also cannot claim a personal allowance. The tax pool — a running record of tax paid by the trustees — is essential for calculating the tax credit available to beneficiaries when distributions are made.
“Sort figures by income type, apply the correct trust rate, and sense-check the final liability before you file.”
For wider planning steps, see our guide to secure your family’s future.
Reporting capital gains and reliefs trustees may claim
Calculating gains on disposals needs clear records and a simple subtraction: proceeds minus allowable costs.
How to work out a chargeable gain
Start with the disposal proceeds. Deduct the original acquisition cost, any allowable improvement expenditure, and incidental costs of sale (such as solicitor’s fees and agent’s commission). Then apply the trust’s annual exempt amount to reduce the net gain.
Annual exempt amount and vulnerable beneficiary increase
The standard annual exempt amount for trusts is currently £1,500 (half the individual amount of £3,000). If the trust has made a valid vulnerable beneficiary election for a qualifying beneficiary (for example, a disabled person or a minor who has lost a parent), the annual exempt amount rises to the full individual level of £3,000. Trustees should keep supporting evidence of the election and the beneficiary’s qualifying status, as HMRC may request this.
CGT rates and the October 2024 change
Non-residential asset gains (such as shares or commercial property) were taxed at 20% for trusts until 29 October 2024. From 30 October 2024, the rate for these gains increased to 24%. This means trusts now pay 24% on both residential and non-residential gains.
Residential property gains held in trust are taxed at 24%. Check the date of disposal carefully to apply the correct rate, especially for disposals around the October 2024 changeover.
Common reliefs and why paperwork matters
Several reliefs can reduce or defer the taxable gain. Holdover relief is particularly relevant to trusts — it allows gains to be deferred when assets are transferred into or out of certain trusts, meaning no immediate CGT charge arises. This is commonly used when a settlor transfers property into a discretionary trust. Private Residence Relief may apply in limited circumstances where a beneficiary occupies a trust property as their main home. Business Asset Disposal Relief is available in restricted cases.
Good evidence matters: sale contracts, professional valuations and invoices for improvements all reduce the risk of errors and can lower the overall tax liability significantly. It’s worth noting that transferring your main residence into a trust normally does not trigger CGT at the point of transfer, because Private Residence Relief applies at that moment.
“Methodical records prevent costly mistakes when reporting capital gains — and make holdover relief claims straightforward.”
| Step | What to keep | Why it matters |
|---|---|---|
| Calculate proceeds | Sale contract, completion statement | Proves disposal value and date |
| Allowable costs | Solicitor’s fees, agent fees, improvement invoices | Reduce the chargeable gain |
| Apply exemptions | Evidence of vulnerable beneficiary election if relevant | Determines whether the £1,500 or £3,000 exempt amount applies |
| Apply reliefs | Occupation records, holdover relief claim forms, business documents | May reduce or defer CGT due |
For a practical explanation of a key relief, see our guide to hold-over relief on property.
Completing and submitting the SA900 to HMRC
Before you send anything, gather the forms and notes so you use the current SA900 for the right tax year. Download the SA900 form and guidance notes from GOV.UK to make sure you are not using an out-of-date version.
Supplementary pages and where they matter
Use supplementary pages SA901 to SA905 when specific types of income or gains apply. These capture trust income, dividends, rental property income, foreign income and capital disposals. Only complete the pages relevant to your trust’s activity in the tax year.
Filing online and by post
You cannot file the SA900 through HMRC’s standard online Self Assessment gateway (which is for individuals). Trust returns must be filed online using HMRC-approved commercial trust and estate tax return software. Always keep the submission receipt and any confirmation reference.
To file by post, print or complete the SA900 form by hand, sign it and send it with any supplementary pages to: HMRC, Trust and Estate Tax, BX9 1EL. Allow time for postal delivery and keep copies of everything sent.
Common pitfalls and a final checklist
- Don’t miss small interest amounts or overseas income — convert foreign income to sterling using HMRC’s published exchange rates for the date of receipt.
- Include all gains on disposals and attach the correct supplementary pages.
- Final check: reconcile totals to bank statements, dividend vouchers and sale contracts before submitting.
“A short checklist makes the SA900 manageable — tackle one section at a time and cross-check against your records.”
Deadlines, payments and penalties for late or incorrect filing
Knowing when forms and payments are due keeps the trust on track and beneficiaries protected.
Key dates to remember
The tax year runs from 6 April to 5 April. After the tax year ends, there are two firm filing deadlines. Paper SA900 returns must reach HMRC by 31 October following the end of the tax year. Online submissions are due by 31 January following the end of the tax year. For example, for the 2024/25 tax year, the paper deadline is 31 October 2025 and the online deadline is 31 January 2026.
When payment is due and how to pay
Any tax owed for the tax year must be paid by 31 January following the end of the tax year — the same date as the online filing deadline. Trustees can pay by bank transfer (Faster Payments or BACS), direct debit, or through HMRC’s online payment portal. Always use the trust’s UTR as the payment reference so funds are matched correctly to the trust’s account.
Penalties and what happens after three months
Missing the filing deadline triggers an automatic £100 penalty — even if no tax is due. If the return remains outstanding after three months, daily penalties of £10 per day can apply for up to 90 days (a further £900). After six months, HMRC may charge 5% of the tax due or £300 (whichever is greater), with the same again at 12 months. Late payment also attracts interest and surcharges.
Fixing an error
If you spot a mistake after filing, submit an amended SA900 as soon as possible. You generally have 12 months from the filing deadline to amend a return. Correcting errors quickly reduces the risk of further enquiries and additional penalties for inaccuracy.
| Issue | Deadline | Typical action |
|---|---|---|
| Paper filing | 31 October | Post completed SA900 to HMRC |
| Online filing | 31 January | Submit via HMRC-approved software |
| Tax payment | 31 January | Pay using the trust’s UTR as reference |
| Late filing penalty | From day 1 | £100 initial; then daily fines after 3 months |
Tip: Mark both filing dates and the payment date in your calendar at the start of every tax year. Paying the confirmed liability on time with the correct UTR reference avoids entirely avoidable penalties and interest.
Conclusion
Good compliance is mostly about routine: log income as it arises, note disposals when they happen and keep paperwork together throughout the year — not just at deadline time.
Follow the straightforward path: register the trust on the TRS within 90 days of creation, obtain a UTR, maintain tidy records separated by tax year, and complete SA900 filings accurately and on time.
Remember that different tax rules apply depending on whether the arrangement is a bare trust, an interest in possession trust or a discretionary trust. Check the relevant rates and allowances before you calculate any liability — and be especially careful about the distinction between income taxed on the trustees and income taxed on beneficiaries.
Keep a few headline numbers to hand: the £1,000 standard rate band for discretionary trusts, the trust income tax rates for 2024/25 (45% non-dividend, 39.35% dividend), the trust CGT annual exempt amount of £1,500, and the CGT rate of 24% for both residential and non-residential gains from 30 October 2024. Treat filing deadlines as non‑negotiable — penalties arise even when no tax is due, and daily fines accumulate faster than most people expect.
We aim to help you protect the family and preserve trust assets for the next generation. Trusts are not just for the rich — they’re for the smart. Steady habits now make compliance straightforward later — and keep you on the right side of HMRC. If you are unsure about any aspect of your trust’s tax obligations, seek advice from a specialist solicitor or trust tax adviser — the law, like medicine, is broad, and getting the right specialist matters.