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Helping family or friends with their tax

Need to help a relative or friend with tax? HMRC’s Trusted Helper service makes it quick and easy to support someone online. Whether it is checking Income Tax, updating their personal details or reviewing taxable benefits like company cars or medical insurance, you can do it all with their permission. After registering as a trusted helper, your friend or family member simply needs to approve your access. You can help up to five people, but remember, they remain responsible for their own tax affairs.

This online option allows you to support someone, such as a friend or relative with key tax tasks, such as checking their Income Tax, updating their personal tax account or reviewing their taxable benefits (limited to company cars and medical insurance).

To get started, you must register online as a trusted helper. Once you have signed up, the person you are helping will need to log in and approve your request. If they cannot go online, you can call HMRC on their behalf, but they must be physically present with you during the call. HMRC will confirm their identity and their consent before proceeding. You will also need their National Insurance or tax reference number.

You can help up to five people using this service. While you can assist with their tax matters the person you are helping remains legally responsible for their own tax affairs. You must sign in using your Government Gateway details, and you may be asked to verify your identity using photo ID such as a passport or driving licence.

HMRC also offers this service in Welsh and provides additional support for those with disabilities or non-English speakers.

Applying for a National Insurance number

Working or claiming benefits in the UK? You may need to apply for a National Insurance number first. If you do not already have one, your NI number is essential for tracking tax, National Insurance contributions and accessing certain government services. While most UK residents receive their number at age 16, newcomers or those starting work later in life may need to apply. It takes around four weeks to process after proving your identity, but you can still start work or claim some benefits while you wait.

According to HMRC guidance, you can apply for a National Insurance number if you:

  • live in the UK,
  • have the legal right to work in the UK, and
  • are working, looking for work, or have a job offer.

You can still start work without an NI number, as long as you can prove your right to work in the UK. Similarly, you can apply for benefits or a student loan without an NI number, though you may be asked to provide one later if required.

Most teenagers living in the UK receive a letter shortly before their 16th birthday confirming their NI number. This letter is important and should be kept safe. Your NI number is unique and stays the same for life, even if your name, address or nationality changes. If you lose your NI number, you can find it on official documents like payslips, P60s or via your personal tax account.

New requirements for Overseas Entities

Overseas property owners must now report earlier ownership changes or risk penalties from 31 July 2025. Under new rules introduced by the Economic Crime and Corporate Transparency Act 2023, entities that registered on the UK’s Register of Overseas Entities must disclose any changes in beneficial ownership that occurred during their pre-registration period. This adds to the annual update requirements already in place and supports HMRC’s efforts to combat offshore tax non-compliance. Missing a deadline or failing to register can result in fines, and can make it impossible to sell or mortgage the property.

The Register of Overseas Entities came into force in the UK on 1 August 2022. The register is held by Companies House and requires overseas entities that own land or property in the UK to declare their beneficial owners and / or managing officers.

From 31 July 2025, overseas entities must report any beneficial ownership changes that occurred during the pre-registration period when filing an updated statement with Companies House. This is a new measure that was introduced under the Economic Crime and Corporate Transparency Act 2023.

The pre-registration period is different for every overseas entity. It’s between 28 February 2022 and either:

  • the end of the transition period (31 January 2023); and
  • the entity’s registration date, if it registered before 31 January 2023.

There is an annual filing requirement for the register of overseas entities. This means that registered entities must file an overseas entity update statement one year after the overseas entity was registered, and every year after that. This is required in order to inform Companies House of any changes, or to confirm that the information they hold is still correct.

Information on the register is available to HMRC and is used to help identify offshore tax non-compliance of:

  • overseas legal entities
  • overseas legal arrangements
  • beneficial owners (including settlors, beneficiaries etc).

There are financial penalties for entities that have failed to comply with the rules. As well as financial penalties, overseas entities which fail to register will find it difficult to sell, lease or raise charges over their land.  

Double Tax Conventions and IHT

Double tax on estates can still hit families hard, even with treaties in place. When someone dies with ties to more than one country, their estate may face inheritance tax in both jurisdictions. Fortunately, the UK has Double Taxation Conventions with several countries to help reduce or eliminate this burden. Understanding how these treaties work, and what happens when no agreement exists, can make a big difference when dealing with international assets and long-term UK residents treated as UK domiciled.

Under these agreements, the country where the deceased was domiciled (or treated as domiciled) has primary taxing rights over all assets. The other country may only tax specific assets located in its own territory, such as land or buildings. Since 6 April 2025, long-term UK residents are treated as deemed UK domiciled for Inheritance Tax (IHT) purposes.

If double taxation still occurs, the DTC determines which country gives credit for the tax paid to the other. Relief is generally given in the UK through a credit for the overseas tax paid against the IHT due in the UK on the same assets already taxed.

The UK has current double taxation agreements that apply to IHT with countries including the USA, Ireland, South Africa, Sweden, Switzerland and the Netherlands. Older treaties exist with France, Italy, India and Pakistan but follow different rules and don’t have a provision for deemed domicile.

If no DTC exists, Unilateral Relief may be available. HMRC may still give credit for foreign tax on overseas assets, using a set formula to calculate proportional relief.

Choosing the right KPI’s for your business

Key Performance Indicators (KPIs) are not just numbers on a dashboard; they are tools to help business owners make better decisions. But with so many metrics available, how do you know which ones matter most for your business?

The answer is simple: start with your goal. KPIs should always support what you are trying to achieve, whether that is growth, efficiency, stability or profitability.

If your goal is overall financial health, net profit margin is a great place to begin. It tells you what percentage of each pound earned is actually kept after all costs. It cuts through the noise and helps business owners see whether they are making money in a sustainable way.

Focusing on cash flow? Track operating cash flow or free cash flow. Profit does not always equal cash in the bank, and many profitable businesses have come unstuck by running out of working capital. Cash flow KPIs show whether your business model is viable on a day-to-day basis.

Want to improve marketing results? Look at customer acquisition cost and customer lifetime value. These two KPIs help you measure whether your marketing spend is delivering a return and how valuable your average client really is.

If your focus is customer loyalty, then client retention rate is key. High retention usually points to satisfied clients, a strong service offering, and predictable revenue. Low retention can indicate pricing issues, poor communication or service problems.

Looking to grow your team or expand services? Keep an eye on revenue per employee or gross profit per fee earner. These metrics highlight how productive your people are, and whether adding more staff will drive profit or just increase overheads.

There is no universal KPI that works for everyone. The best approach is to pick a small set of KPIs (three to five), review them regularly, and use them to shape decisions.

KPIs turn a report into a roadmap, which provides informed and actionable to-do’s.