HMRC Registration of Trusts: A Trustee’s Guide

We know trustees feel pressure when handling trust matters after a death or during a property sale. We’ll explain what HMRC expects in plain language and show practical steps you can follow today.

This guide sets out the difference between a non-taxable trust that simply needs to appear on the register for transparency and a taxable trust that requires ongoing tax reporting to HMRC. We use clear examples so you can match the right forms to your trust deed.

We outline the key people — settlor, trustee and beneficiary — and how the Trust Registration Service (TRS) fits into the day-to-day administration of family trusts. We also flag common pitfalls, such as choosing the wrong Government Gateway account type, missed deadlines or incomplete identity details.

Practical next steps include gathering essential details and using the online service to register your trust correctly. If you need a straightforward walkthrough, see our practical guide to register a trust.

Key Takeaways

• We simplify the HMRC registration steps so trustees can act with confidence.
• Some trusts must report tax to HMRC; others simply need to appear on the register for transparency.
• Gather correct identity details and asset information before you start.
• Use the online TRS service and keep your trust’s details up to date.
• Avoid common delays by choosing the right Government Gateway account type early on.
• Work methodically when time is tight — especially after a loved one’s death.

What the Trust Registration Service is and why it matters

The Trust Registration Service is HMRC’s online register that records information about UK trusts to improve transparency and support anti-money laundering checks. We explain what this means in plain terms and why every trustee should take it seriously.

How TRS supports anti-money laundering compliance

TRS is the government’s online register for express trusts in the UK. Following the 5th Money Laundering Directive, virtually all UK express trusts — including bare trusts — must be registered. The register helps banks, solicitors and other regulated firms confirm who controls a trust’s assets before they enter into a business relationship.

This reduces the risk of trusts being used to conceal ownership and makes routine due diligence checks faster. It is not just an accountant’s concern; it directly affects everyday dealings with banks, conveyancers and investment providers. Importantly, the TRS register is not publicly accessible (unlike Companies House), so your trust’s details remain private from general public view.

Outcomes: URN for non-taxable trusts or UTR for taxable trusts

After you complete the registration, HMRC issues a reference number. Non-taxable trusts receive a Unique Reference Number (URN). Taxable trusts receive a Unique Taxpayer Reference (UTR) that links the trust to the Self Assessment system. These usually arrive within 15 working days.

Treat either number like sensitive paperwork. It links the trust to all official correspondence, your Government Gateway account and any future tax filings.

What “managing your trust’s details” means in practice

“Manage Your Trust’s Details” is the online portal that lets you view and update trustees, beneficiaries, settlors and trust assets. You can also download proof of registration to share with banks, solicitors or financial advisers.

Keeping this information current avoids delays whenever a new bank, conveyancer or solicitor asks for evidence of the trust’s registration — something that happens routinely during property transactions and account openings.

Do you need to register your trust with HMRC?

The core rule is straightforward: most UK express trusts must be registered on the TRS, even when no tax is due. The registration requirement exists for transparency, not just taxation.

UK express trusts that must register even with no tax liability

Since the implementation of the 5th Money Laundering Directive, the vast majority of UK express trusts are in scope for TRS registration unless a specific exclusion under Schedule 3A applies. An express trust is a trust — a legal arrangement — created deliberately by a settlor, typically by a trust deed or by the terms of a will, as opposed to a trust that arises by operation of law (such as a resulting or constructive trust). This includes discretionary trusts, bare trusts, interest in possession trusts, and most family trusts used for inheritance tax planning.

Non-UK express trusts: UK property and UK business relationships

Non-UK trusts must register on the TRS if they acquire UK land or property, or if they have at least one UK-resident trustee and the trust enters a business relationship with a UK-based regulated firm. Practical examples include a family trust established overseas that buys a UK holiday let, or an offshore trust that opens an investment account with a UK platform provider.

When a trust becomes registerable because it’s liable to tax

Even if a trust was previously exempt from registration, it must be registered once it becomes liable to UK tax. Common triggers include Income Tax on trust income, Capital Gains Tax on asset disposals, Inheritance Tax charges (such as the 10-year periodic charge on discretionary trusts), Stamp Duty Land Tax (SDLT), Stamp Duty Reserve Tax (SDRT), Land and Buildings Transaction Tax (LBTT) in Scotland, or Land Transaction Tax (LTT) in Wales. Trustees should review the trust deed and asset records regularly to identify these triggers early.

What to do next: review the trust deed, list all trust assets and their locations, and follow the decision path below — or seek specialist advice if the position is unclear.

Schedule 3A excluded express trusts and other common exemptions

Not every express trust needs to be registered. We walk through the main exclusions under Schedule 3A so you can check whether your trust falls outside the registration requirement.

Will trusts closed within two years

Will trusts — trusts that come into existence under the terms of a deceased person’s will — are usually exempt from TRS registration provided they are fully wound up within two years of the death. This gives executors and trustees breathing room to administer the estate and distribute assets to beneficiaries without the additional step of registering the trust on the TRS.

Pension scheme and life policy trusts

Trusts holding assets solely for a UK registered pension scheme are excluded from registration, provided they hold only pension fund assets.

Life insurance policies written in trust that pay out only on death, terminal illness or disability are normally exempt too. This is relevant for families who have placed life cover into trust to keep the payout outside their estate for inheritance tax (IHT) purposes — a common and sensible planning step. A life insurance trust typically costs nothing to set up and can prevent a 40% IHT charge on the proceeds, so it is one of the simplest and most effective forms of estate planning available.

Co-ownership trusts for tenants in common and pilot trusts

Co-ownership arrangements where property is held on trust purely to reflect the ownership shares between tenants in common are exempt, provided the trust does nothing beyond recording who owns what share of the property. This is the typical arrangement when a couple owns a property as tenants in common — a structure often used in estate planning to protect each partner’s share and prevent sideways disinheritance.

Pilot trusts created before 6 October 2020 with assets of £100 or less are also excluded, unless a UK tax liability subsequently arises.

Keep this in mind: an exemption can fall away if the trust later acquires a UK tax liability. Keep clear records showing why you relied on an exclusion, so you can demonstrate your reasoning if HMRC ever queries it. For practical help when an agent handles registration on your behalf, see our agent guide.

Deadlines and timing rules trustees need to follow in the UK

Timing matters for every trustee. Different deadlines apply depending on when the trust was created and whether it has a UK tax liability. We set out the rules clearly so you can act with confidence.

Registering non-taxable trusts within 90 days

Non-taxable trusts created on or after 6 October 2020 must be registered on the TRS within 90 days of creation. If an existing trust later comes into scope (for example, because an exemption ceases to apply), the 90-day clock starts from the date it becomes registerable. That means you should act promptly once the trust deed is executed and the trust is established.

Taxable trusts: how deadlines vary by creation date

For taxable trusts, the deadline depends on when the trust was created and when the tax liability first arose. Trusts created on or after 6 April 2021 normally need to be registered within 90 days of becoming liable to UK tax.

If the trust was established before 6 April 2021, older deadlines may apply. These include 5 October following the end of the tax year in which a first-time Income Tax or Capital Gains Tax liability arose, or 31 January for later liabilities or other taxes. These deadlines tie into the broader Self Assessment cycle.

Key cut-offs trustees commonly miss

Trustees often miss registration deadlines because they assume “no tax due” means “no action required,” or because they wait for probate to conclude before taking any steps. If two deadlines could apply, always meet the earlier one to stay on the safe side.

“Register promptly, gather the required information, and seek specialist advice if you think penalties may follow. Plan, don’t panic.”

What to do if you’re late: collect the required information, complete the registration without further delay and consider getting professional help to reduce penalty risk. HMRC takes a more favourable view of trustees who correct errors voluntarily.

Information you must gather before registering a trust

We recommend preparing a short checklist before you log in to the TRS. Having everything to hand saves time and prevents errors that cause delays or HMRC queries.

Core trust details you will need include the trust name (as stated in the trust deed), the date the trust was created, and confirmation that it is an express trust. Keep the trust deed itself to hand so the name and date match exactly what you enter.

Lead trustee details should include their full legal name, date of birth, National Insurance number (for UK nationals) or passport details (for non-UK nationals), current residential address, telephone number, country of residence and nationality. The lead trustee is the person who becomes the main point of contact for HMRC correspondence.

For all settlors, trustees and beneficiaries, gather full name, date of birth, country of residence and nationality. Where requested, have National Insurance numbers or passport details ready. Even small mismatches — such as a missing middle name or a slightly different address format — can trigger queries and delay registration.

UK property details must include full addresses or Land Registry title numbers and the current estimated value. This matters whenever property forms part of the trust’s assets — which it will for most family trusts, given that the average home in England is now worth around £290,000.

For taxable trusts, also prepare totals for money held, company shares (company name, number of shares, share class and value), business interests (business name, description, address and value) and any other assets (description and estimated value).

Finally, store copies of the trust deed, identity documents and asset schedules in a secure folder so all trustees can access the information when needed — both for registration and for ongoing administration.

Government Gateway setup for trustees using the TRS

Start calmly: set up your Government Gateway account, note the access code rules and store your login details securely.

We walk you through the steps in plain language so you do not feel rushed. To access the TRS you must create Government Gateway sign-in credentials using an email address. An access code is sent to that email and expires after 30 minutes — so start when you can give it your full attention. You then receive a 12-digit Government Gateway ID. Keep this safe — it is the key to your trust’s online account for the long term.

Choose an “organisation” account when you are acting for a trust, even if you are an individual trustee working from your kitchen table. Remember, a trust in English law is not a separate legal entity — it is a legal arrangement where the trustees are the legal owners of the trust assets. However, HMRC’s system requires the “organisation” account type for trust registration. Choosing “individual” instead will prevent you from accessing the TRS properly and cause problems later.

Set up two-factor authentication by text message or phone call. Make sure your mobile number can receive verification codes. Enter your personal details carefully — spelling, dates of birth and National Insurance numbers must match HMRC’s records exactly. Three incorrect attempts will lock the system for 30 minutes.

• Have your National Insurance number ready in case the system asks for identity-matching data.
• Store the Gateway ID and the email address used to sign up in a secure folder accessible to all trustees.
• If locked out, wait 30 minutes then retry with the exact details from your records.

Need more help? See our clear guide to unlock wider benefits here: unlock the benefits of a UK trust.

Registration of a trust hmrc: step-by-step on the Trust Registration Service

Begin on GOV.UK. Choose the correct trust type at the very start so you do not need to redo entries later. We guide you through each page and the small checks that make all the difference.

Starting the online service via GOV.UK and selecting the right trust type

Open the TRS registration path on GOV.UK and select the trust category that matches your trust deed. Common types include discretionary trusts, bare trusts, interest in possession trusts and will trusts. The online route is relatively straightforward, but your selection must accurately reflect the terms of your trust deed — choosing the wrong type will cause problems later.

Entering lead trustee details accurately, including National Insurance number

Enter the lead trustee’s full legal name, date of birth and National Insurance number where asked. Spelling and dates must match the trustee’s official identification exactly. Even minor discrepancies — a middle name on a passport but not entered on the TRS — can trigger identity-matching failures and delay registration.

Adding settlors, trustees and beneficiaries (including classes of beneficiaries)

Add all individuals connected to the trust: settlors, trustees and beneficiaries. Where the trust deed defines beneficiaries by class rather than by name (which is standard in discretionary trusts), you can enter class descriptions such as “children and remoter issue of the settlor” or “such persons as the trustees shall determine.” This is one of the advantages of a discretionary trust — the flexibility means individual beneficiaries do not need to be named, which preserves privacy and simplifies registration.

Declaring UK tax liabilities that trigger registration

Declare any UK tax liabilities, including Income Tax (trust rate currently 45% for non-dividend income, 39.35% for dividends), Capital Gains Tax (currently 24% for residential property disposals, 20% for other assets held by trustees) and any IHT charges. This step links the trust’s TRS record to HMRC’s tax systems and triggers the issue of a UTR for Self Assessment filing.

Submitting the declaration and what to save for your records

Before you submit, double-check all fields carefully. Save screenshots, download any PDFs and note the reference number shown on the confirmation screen. If the trust is taxable, you will receive a UTR for Self Assessment purposes, and the trustees will need to file an SA900 (Trust and Estate Tax Return) annually. Keep all evidence in your secure trust administration folder.

“Check names, National Insurance numbers and dates twice before you click submit. Small mistakes cause disproportionate delays.”

After registration: claiming the trust and using your URN or UTR

Once the TRS shows the trust as registered, claiming it ties the lead trustee to future HMRC correspondence and gives you control over the trust’s online record.

Who can claim the record

Only the lead trustee named during registration can claim the trust on the TRS. This person becomes the main point of contact for HMRC, even though all trustees share equal legal responsibility for the trust’s administration. If you have multiple trustees (and you should — a minimum of two is required), make sure the lead trustee keeps the other trustees informed of all correspondence.

What the HMRC letter looks like and why the number matters

HMRC will send a postal letter to the lead trustee’s registered address containing either a 15-character URN (for non-taxable trusts) or a 10-digit UTR (for taxable trusts). Treat that number as highly sensitive — it is the trust’s equivalent of a National Insurance number. Store a scanned copy in a password-protected folder and share it securely only with your solicitor, accountant or financial adviser as needed.

Accessing and using “Manage Your Trust’s Details”

To claim the trust, you will need the lead trustee’s contact details plus the URN or UTR from the HMRC letter. Log in with your Government Gateway credentials to access “Manage Your Trust’s Details,” where you can review what appears on the register, update information and download proof of registration.

• Check that names and dates match the original registration entry before claiming.
• Keep the URN or UTR readily accessible for future correspondence, bank requests and online updates.
• If an agent acts on the trustees’ behalf, they use separate authorisation — but the lead trustee’s Government Gateway account remains the primary access point.

For step-by-step guidance on claiming the trust record and using the service, see the GOV.UK guide on registering as a trustee.

Keeping the trust register up to date and meeting ongoing duties

A tidy, up-to-date TRS record helps trustees avoid penalties and reduces friction whenever you deal with banks, solicitors or HMRC. Keeping details current is an ongoing duty, not a one-off task. Even small changes need to be reported.

What counts as a change you must report

You must report changes to trustees (appointments and retirements), beneficiaries (new births, deaths, or changes to named individuals), addresses and any updates to the trust’s assets or tax position. This includes new property acquisitions, changes in shareholdings, additions of cash or other investments, and any change to the lead trustee’s contact details.

The 90-day update rule and risks if you miss it

Update the TRS within 90 days whenever any registerable details change. Missing this deadline can lead to queries from banks and regulated firms who rely on the register for their own compliance, and it increases the risk of HMRC penalties.

If you delay beyond 90 days, you may face fines and additional difficulty when trying to prove the trust’s details to third parties — for example, during a property sale or when opening a new bank account.

Annual declaration and the 31 January deadline

For taxable trusts, trustees must file a yearly declaration by 31 January following the end of the tax year. You must do this even when nothing has changed — it confirms the trust’s details remain accurate. This is separate from any tax return obligation.

When SA900 may also be needed

If the trust is liable to Income Tax or Capital Gains Tax, the trustees will also need to file the Self Assessment Trust and Estate Tax Return (SA900). The trust income tax rate is currently 45% for non-dividend income and 39.35% for dividends, with the first £1,000 taxed at the basic rate. The annual CGT exempt amount for trusts is currently half the individual level. TRS updates do not replace tax returns — they are two separate obligations.

Penalties and a simple maintenance routine

HMRC can charge penalties of up to £5,000 for failures to register or keep information up to date. That makes regular checks well worth the small effort involved. A simple maintenance routine will keep you on track:

• Carry out a quarterly review of trust details, trustee information and asset values.
• Set a calendar reminder for the 31 January annual declaration deadline.
• Keep scanned evidence, valuations and correspondence in one secure, well-organised folder that all trustees can access.

“Keep details current. Routine checks avoid costly surprises and speed up dealings with banks, solicitors and advisers.”

Special situations: agents, proof of registration and risk of harm reporting

When trustees are busy or the paperwork is complex, an experienced solicitor or tax agent can step in and handle the TRS registration and updates on your behalf. This is particularly useful for trustees who are not confident with online systems.

What agent authorisation covers (and what it doesn’t)

Agents may register trusts on your behalf using the TRS service and can download evidence of registration for banks, solicitors or other regulated firms.

Important: agent authorisation for TRS purposes does not automatically allow the agent to file tax returns or act in Self Assessment on behalf of the trust. Separate authorisation (usually a 64-8 form) is required before an agent can speak to HMRC about the trust’s tax affairs or submit the SA900.

Downloading proof for new business relationships

You can download a PDF titled “Get evidence of the trust’s registration” from the TRS online service. Banks, mortgage lenders, conveyancers and investment providers routinely ask for this document when establishing a new business relationship with the trust.

Keep a current copy in your secure trust folder. Having it readily available often removes practical hold-ups during property sales, remortgages or transfers of trust assets. Since trust assets bypass probate entirely — trustees can act immediately without waiting for a Grant of Probate — having your TRS proof to hand means transactions can proceed without the delays that affect non-trust assets, where sole-name bank accounts, property and investments are frozen until the Grant is issued.

Beneficial owners at risk: how to alert HMRC quickly

If a person named on the trust’s TRS record faces a disproportionate risk of harm from their details being disclosed, you can email trs.riskofharm@hmrc.gov.uk. Use the subject line: “Beneficial owners at risk of harm”.

• Include the trust’s URN or UTR and the trust name.
• Give the lead trustee’s name and identify which beneficial owners are at risk.
• Describe the nature of the risk (fraud, kidnapping, blackmail, extortion, harassment, violence or intimidation), explain the reasons and estimate how long the risk may last.

HMRC reviews requests and replies in writing. If they accept the case, protective measures last for 12 months. You must renew the application between months 11 and 12 if the risk continues.

“If safety is at stake, act promptly and include full details in your email so HMRC can respond without delay.”

For step-by-step help when using an agent, see the GOV.UK guide to register your client’s trust.

Closing a trust on the TRS when assets have been distributed

Closing the TRS record marks the end of the trust’s administration once all assets have been distributed to beneficiaries and nothing remains under trusteeship. This is an important final step that confirms the trustees’ duties are complete.

Choosing the correct closure date and ensuring details are up to date

Log in to the TRS, complete the security checks and select “Close the Trust…” within the service. Enter the closure date as the day on which the final asset was appointed out to beneficiaries or physically transferred.

Examples: the date a property transfer completed at the Land Registry, or the date the final bank funds left the trust’s account. Make sure all names, addresses and asset entries are current and accurate before you close the record — HMRC expects the register to be correct at the point of closure.

Completing the declaration and saving evidence of deregistration

Complete the final declaration on the TRS, then print or save the confirmation PDF. That document is proof the trust’s record was closed and should be filed alongside the final trust accounts in your secure trust administration folder. Retain these records — there is no fixed period after which HMRC cannot enquire, so keeping clear evidence indefinitely is sensible practice.

Closing the record yourself vs authorising a solicitor to act on your behalf

Trustees can close the TRS record themselves using their Government Gateway login. Alternatively, you can authorise a solicitor or agent via the agent link to close it on your behalf.

When to use a solicitor: if asset transfers were complex (for example, involving property transfers, holdover relief claims or distributions to multiple beneficiaries), or if you prefer a professional to handle the final paperwork and maintain a tidy file for the family.

• Confirm no assets remain in the trust — every item must have been appointed out or distributed.
• Check all beneficiaries have received their entitlements.
• Ensure TRS details match your final trust accounts and transfer documentation.
• Save the final declaration and retain all records for the trust’s entire lifetime.

“Close the record only once you can demonstrate that all assets have been properly dealt with and you have saved the closing evidence.”

Conclusion

In short, getting your TRS registration right from the start protects your family’s trust assets and avoids unnecessary penalties.

Check whether your trust must be on the TRS and, where an exemption may apply under Schedule 3A, keep clear notes to show why you relied on it.

The practical flow is straightforward: gather the information you need, set up your Government Gateway account (choosing “organisation”), use the TRS registration path, then claim and maintain the record over the trust’s lifetime.

Remember the key distinction: non-taxable trusts receive a URN for identification; taxable trusts receive a UTR and bring ongoing duties such as the 31 January annual declaration and potentially the SA900 tax return.

Keep secure files, share key details with your co-trustees, and set diary reminders for 90-day update deadlines. Seek specialist advice for complex beneficiary classes, overseas elements or unclear tax triggers. As Mike Pugh says, “the law — like medicine — is broad. You wouldn’t want your GP doing surgery” — so use a specialist when the situation demands it.

Work step by step. It saves stress and keeps your family’s plans firmly on track.