Trusts and estates have their own tax rules in the UK, and the people responsible for managing them carry real legal duties to get it right. According to HMRC, there are over 180,000 trust tax returns filed each year in the UK. Missing a deadline or reporting income incorrectly can lead to penalties and unwanted attention from HMRC.
Trustees, executors, and personal representatives all have different roles, but they share one thing in common: they must report income and gains on time. The rules around what to report, when to report it, and how much tax is owed can catch people off guard. Getting the right support early makes the whole process much easier.
In the UK, trustees must register a trust with HMRC and file a Self Assessment tax return if the trust receives income or makes a capital gain during the tax year. This is not optional. The responsibility falls on the trustees as a group, and the trust is treated as one entity for tax purposes. It does not matter how many trustees are involved. They all share the duty to make sure the return is done correctly and on time.
HMRC requires trustees to complete the SA900 trust and estate tax return, which covers all income and gains from the trust during the tax year. One trustee is usually named as the main point of contact with HMRC, but all trustees remain responsible for what is reported.
Getting this wrong can lead to penalties, so it is always best to seek advice early. Our private client tax team supports trustees through every stage of the process.
Executors and personal representatives carry similar reporting duties when managing a deceased person’s estate. During the administration period, the estate is treated as its own taxpayer.
Any income that comes in, whether from savings, investments, or rental property, must be reported to HMRC. This applies even if the estate is being wound up quickly. Once the estate is fully distributed to the beneficiaries, the administration period ends, and the tax obligations change. If the estate holds property, it is worth speaking to a property tax specialist about what needs to be reported and when.
Trustees are responsible for reporting all income that comes into the trust, regardless of where it comes from. The type of income affects the tax rate that applies and how it must be declared on the trustee tax return in the UK. Keeping clear, accurate records throughout the year makes this process much easier when it comes to filing time.
Common sources of trust income include:
Trustees must also think about whether any income needs to be passed on to beneficiaries. When income is paid out, it carries a tax credit that the beneficiary can use against their own tax bill. This means both the trust and the beneficiary may need to report the same income from different angles.
Trustees must give each beneficiary a form R185, which shows their share of the income and the tax already paid. According to GOV.UK, missing the deadline for issuing R185 certificates to beneficiaries is one of the most common errors trustees make.
Trusts that hold property face an extra layer of complexity. Rental income, capital gains on disposals, and any interaction with Stamp Duty all need to be considered. If the trust owns UK property, a separate supplementary form must be completed alongside the SA900. Our property tax advisers can help trustees understand exactly what needs to be reported, so nothing gets missed.
When someone dies, their estate goes through a period of administration. During this time, the executor or personal representative collects the assets, pays any outstanding debts, and distributes what is left to the beneficiaries. The estate is treated as its own taxpayer during this period, which means any income it receives must be reported to HMRC through Self Assessment.
From 6 April 2024, new rules changed how estates report income. As confirmed by Low Incomes Tax Reform Group, estates with any type of income below £500 per tax year now have no reporting requirement at all. This is a helpful simplification for smaller estates. However, once income goes above that threshold, the full amount becomes taxable and must be reported.
For larger or more complex estates, a formal Self Assessment return is usually required. An estate is classed as complex if the total tax due over the whole administration period is more than £10,000, the estate had a value of more than £2.5 million at the date of death, or asset sale proceeds exceeded £500,000 in any single tax year. In those cases, the estate must be registered with HMRC and formal returns submitted.
Key steps for executors managing estate income:
Our private client tax team works with executors at every stage of estate administration to make sure reporting is handled correctly.
The tax rates for trusts are higher than those for individual taxpayers. The rate that applies depends on the type of trust and the kind of income it receives. Trustees need to understand this before filing a trustee tax return, because paying the wrong amount can trigger interest charges from HMRC.
For discretionary trusts, which are the most common type used for inheritance planning, the income tax rate is 45% on most income. Dividend income is taxed at 39.35%. These rates apply to all trust income above £500 per tax year. As confirmed by Wedlake Bell’s trust tax guidance, from April 2024, the previous £1,000 standard rate band for discretionary trusts was abolished, meaning the full amount of income above £500 is now taxed at the higher trust rate.
For interest in possession trusts, where a named beneficiary has a right to receive income as it arises, the trust pays basic rate tax. The beneficiary then reports the income on their own tax return and pays any extra tax owed above the basic rate.
Capital gains within trusts are also subject to Capital Gains Tax. Key points include:
If your trust holds investments or property with significant gains, speaking to an adviser before making any disposals is a sensible step. Our private client tax advisers can help trustees plan and avoid unnecessary tax liabilities.
Not every executor needs to file a formal Self Assessment return. But all executors are responsible for making sure the tax affairs of the estate are properly dealt with from the date of death. This includes checking that the deceased person’s own tax position was up to date and that any final tax owed has been paid. HMRC may issue a tax return for the deceased’s final tax year, and the executor is responsible for completing it.
Once the estate starts receiving income during the administration period, the executor acts as a personal representative for tax purposes. At that point, a formal tax return for the estate may be needed, depending on the size and complexity of the estate.
Executors dealing with overseas assets or cross-border tax issues face extra complexity. International elements can affect which country has the right to tax certain income or gains, and the UK rules may interact with foreign tax obligations. These situations require careful handling and specialist knowledge.
When things go wrong or HMRC raises a query, having the right support in place makes a real difference. Our team handles tax disputes and HMRC investigations and can step in to manage correspondence with HMRC on your behalf.
Trustees follow the same Self Assessment deadlines as individual taxpayers. The UK tax year runs from 6 April to 5 April the following year. The deadline for a paper return is 31 October after the end of the tax year, and for an online return it is 31 January the following year. Any tax owed must also be paid by 31 January to avoid interest and late payment penalties.
Trustees must also register their trust with HMRC’s Trust Registration Service (TRS). As outlined on GOV.UK’s TRS expansion guidance, the rules were significantly widened in September 2022 to include most UK express trusts, even those with no tax liability. Trusts created after September 2022 must register within 90 days of being set up.
Key deadlines to keep in mind:
Missing any of these dates can lead to penalties. Trustees who are unsure about their obligations should seek professional support rather than wait and risk a late filing. Our private client tax team helps trustees stay on top of their deadlines and keep their records in order.
HMRC treats late filings from trustees the same way it treats late filings from individuals. The penalties build up quickly, so it is important to act as soon as you realise a deadline has been missed. Burying the problem does not make it go away, and interest continues to build on any unpaid tax from the date it was due.
If a trustee’s tax return in the UK is submitted after the deadline, the following charges apply:
In cases where HMRC believes the late filing was intentional or that information was hidden, higher penalties can be charged. HMRC may also open a formal investigation into the trust’s affairs, which can be stressful and time-consuming.
If you have missed a deadline or received a penalty notice, it is important to get advice quickly. In some cases, it is possible to appeal against a penalty if there was a genuine reason for the delay. Our team specialises in tax disputes and HMRC investigations and can help trustees respond to HMRC, appeal penalties where appropriate, and get the trust’s affairs back on track.
Managing the tax side of a trust or estate is not always easy. There are deadlines to hit, forms to complete, and rules that can change. Getting it wrong can lead to penalties from HMRC, and that is the last thing any trustee or executor needs.
That is where ETC Tax comes in. The team works with trustees, executors, and personal representatives across the UK, helping them stay on top of their Self Assessment obligations without the stress. From completing the SA900 to registering with the Trust Registration Service, everything is handled properly and on time.
Complex tax matters often require specialist advice. Whether you’re acting as a trustee, executor, or personal representative, our Complex Tax Return service can provide the guidance and support you need.
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