TaxDigit

Author: Amir Rafiei

Thin capitalisation is a key concept in UK corporate tax, especially for groups that fund their operations through debt. It describes a situation where a company is financed with a relatively high level of debt compared to equity, often to take advantage of tax-deductible interest.

Thin capitalisation and intra-group debt tax advice from TaxDigit accountants

What Is Thin Capitalisation?

A company is said to be thinly capitalised when it carries more debt than it could realistically borrow on its own as an independent business. Because interest is generally deductible while dividends are not, groups can be tempted to load a UK company with intra-group debt to reduce taxable profits.

Why HMRC Takes an Interest

The UK’s transfer pricing rules require that intra-group borrowing reflects what would have been agreed between independent parties. Where a company is thinly capitalised, HMRC may disallow part of the interest deduction, treating the excess borrowing as something an unconnected lender would not have provided.

Managing the Risk

Groups can manage thin capitalisation risk by reviewing debt levels, interest rates and guarantees against arm’s length standards, and by keeping clear documentation. The Corporate Interest Restriction rules may also limit deductions separately, so both regimes need to be considered together.

How TaxDigit Can Help

Our Guildford-based team helps groups review intra-group financing and address thin capitalisation risk before it becomes a problem. Contact us to discuss your funding structure.

Thin Capitalisation: UK-Wide Corporate Tax Support

Thin capitalisation is a concern for groups across the United Kingdom, not just those near our Guildford head office. TaxDigit helps UK companies and international groups test whether their intra-group debt is at an arm’s length level and manage the transfer pricing risk that follows.

Our chartered certified accountants review your financing structure, model interest deductibility and help you document a defensible position before HMRC raises an enquiry. We act for clients UK-wide, remotely and on-site.

How we help with thin capitalisation

  • Assessing whether a UK company is thinly capitalised on arm’s length terms
  • Reviewing intra-group loan agreements and interest rates
  • Modelling the impact of the Corporate Interest Restriction
  • Preparing transfer pricing documentation to support interest deductions
  • Advising on debt-to-equity structuring for new UK investment

HMRC explains the rules in its International Manual: HMRC thin capitalisation legislation guidance (INTM413090).

Frequently Asked Questions

What is thin capitalisation?
A company is thinly capitalised when it carries more debt than it could have borrowed as an independent business, often to maximise tax-deductible interest. UK transfer pricing rules can deny the excess deduction.

Why does HMRC scrutinise thin capitalisation?
Because interest is deductible while dividends are not, groups can load a UK company with intra-group debt to reduce taxable profits, so HMRC tests whether the borrowing is at arm’s length.

Can TaxDigit help if I am not based in Guildford?
Yes. We advise on thin capitalisation for clients UK-wide, remotely and from our Guildford office.

The UK’s proposed Multinational and Domestic Top-Up Taxes mark one of the biggest shifts in international tax for years. They form the UK’s implementation of the OECD’s global minimum tax, designed to ensure large groups pay an effective rate of at least 15% wherever they operate.

Multinational and Domestic Top-Up Tax (Pillar Two) advice from TaxDigit

What Are Top-Up Taxes?

The Multinational Top-Up Tax applies to large groups whose profits in a particular jurisdiction are taxed below the 15% minimum, charging an additional ‘top-up’ to bring them up to that level. The Domestic Top-Up Tax applies a similar principle to UK profits, keeping the additional revenue in the UK.

Who Is Affected?

These rules are aimed at large multinational groups above a global revenue threshold. Smaller businesses are generally outside their scope, but affected groups face significant new calculation and reporting obligations.

Preparing for the Changes

Compliance with the multinational top-up tax requires detailed data on effective tax rates across every jurisdiction. Groups should review their structures early, identify low-taxed entities, and ensure the necessary information can be gathered accurately.

How TaxDigit Can Help

Our Guildford-based team helps multinational groups understand and prepare for the top-up tax rules. Get in touch to assess how these changes affect your business.

Top-Up Taxes: UK-Wide Pillar Two Support

The Multinational and Domestic Top-Up Taxes affect large groups based throughout the United Kingdom, not just those near our Guildford head office. TaxDigit helps in-scope groups understand their effective tax rate by jurisdiction and meet the UK’s Pillar Two registration and reporting obligations.

Our chartered certified accountants translate the global minimum tax into practical steps, helping you calculate any top-up charge and integrate it with existing compliance. We support clients UK-wide, remotely and on-site.

Because the regime introduces new concepts such as the GloBE rules, qualifying income and covered taxes, many finance teams are reviewing their data and systems for the first time. Early preparation makes a real difference: gathering jurisdiction-by-jurisdiction figures, agreeing accounting treatment and confirming registration deadlines all reduce the risk of a last-minute compliance scramble. TaxDigit works alongside your in-house team to build a repeatable Top-Up Taxes process rather than a one-off exercise.

It is also worth remembering that Top-Up Taxes interact with existing reliefs and incentives. A jurisdiction that looks low-taxed on paper may benefit from substance-based carve-outs, while generous local credits can affect the effective rate calculation. Getting these details right protects you from both over-paying and under-reporting, and it gives your board confidence that the group’s global minimum tax position is accurate, documented and ready for review.

How we help with Top-Up Taxes

  • Confirming whether your group is within scope of the 15% global minimum tax
  • Calculating the effective tax rate and any Multinational or Domestic Top-Up Tax
  • Registering and reporting Pillar Two top-up taxes with HMRC
  • Modelling the impact on group cash tax and forecasting
  • Coordinating Pillar Two with your wider corporation tax compliance

HMRC explains how to pay these taxes here: HMRC guidance on paying Pillar 2 Top-Up Taxes.

Frequently Asked Questions

What are the Multinational and Domestic Top-Up Taxes?
They are the UK’s implementation of the OECD global minimum tax, ensuring large groups pay an effective rate of at least 15%. The Multinational Top-Up Tax covers overseas profits taxed below 15%, while the Domestic Top-Up Tax keeps any UK top-up in the UK.

Which groups are affected?
The rules target large multinational groups above a global revenue threshold; smaller standalone businesses are generally outside scope.

Can TaxDigit help if I am not based in Guildford?
Yes. We support Pillar Two and Top-Up Tax compliance for clients UK-wide, remotely and from our Guildford office.

If you would like a clear, jargon-free assessment of how the Multinational and Domestic Top-Up Taxes apply to your group, our Guildford-based team is ready to help wherever you operate in the UK. We can scope the work, agree a timeline and keep you compliant year after year.

For company directors, the salary vs dividend decision is one of the most common tax planning questions. How you draw money from your company affects the tax and National Insurance you pay, so it is worth understanding the trade-offs before deciding on the right mix.

Salary vs dividend tax planning advice for company directors from TaxDigit

The Salary Route

A salary is a deductible expense for the company, reducing its corporation tax bill. However, salary is subject to income tax and National Insurance for both the employee and employer, which can make it a more expensive way to extract larger sums.

The Dividend Route

Dividends are paid from post-tax profits, so they are not deductible for the company and do not reduce corporation tax. They are not subject to National Insurance, though, and are taxed at lower dividend rates, which often makes them attractive once a modest salary is in place.

Finding the Right Balance

For many directors, the most efficient approach in the salary vs dividend debate is a blend: a salary up to a sensible threshold to preserve state benefits and use allowances, topped up with dividends. The ideal mix depends on profits, other income and personal circumstances.

How TaxDigit Can Help

Our Guildford-based team helps directors find the most tax-efficient salary vs dividend balance for their situation. Get in touch for tailored advice.

Salary vs Dividend: UK-Wide Advice for Directors

The salary vs dividend question matters to company directors right across the United Kingdom, not just those near our Guildford head office. TaxDigit helps owner-managers UK-wide find the most tax-efficient and compliant way to draw income from their company each year.

Our chartered certified accountants look at the full picture, including corporation tax, income tax, National Insurance, dividend allowances and your personal circumstances, so the mix you choose actually works for you. We support clients UK-wide, both remotely and from our Guildford office.

Getting the salary vs dividend balance right is rarely a one-size-fits-all answer. The optimal split changes with tax thresholds, the level of profit available, whether you want to make pension contributions, and whether you are claiming benefits or building a borrowing record. We review your position annually so your remuneration strategy keeps pace with changing rates and your own plans.

How we help with salary vs dividend planning

  • Modelling the most tax-efficient salary and dividend mix for your profit level
  • Factoring in the dividend allowance, personal allowance and National Insurance thresholds
  • Coordinating remuneration with pension contributions and other reliefs
  • Ensuring dividends are legally declared with proper paperwork
  • Reviewing your strategy each year as tax rates and your goals change

HMRC explains how dividends are taxed here: HMRC guidance on tax on dividends.

Frequently Asked Questions

Is it better to take salary or dividends?
For most directors a modest salary plus dividends is efficient, but the right salary vs dividend mix depends on your profit level, allowances and personal goals, so it is worth reviewing each year.

Are dividends taxed less than salary?
Dividends are paid from post-tax profits and are not subject to National Insurance, but they do not reduce corporation tax. Salary is deductible for the company but attracts income tax and National Insurance.

Can TaxDigit help if I am not based in Guildford?
Yes. We provide salary vs dividend planning to company directors UK-wide, remotely and from our Guildford office.