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What are Corporation Tax Marginal Rates?

Updated: Apr 5

Introduction to Corporation Tax Marginal Rates in the UK (2024)

Corporation Tax Marginal Rates in the UK refer to the variable rates of tax imposed on the taxable profits of companies operating within the United Kingdom, particularly when those profits fall within certain thresholds that do not align with the main rate of Corporation Tax. Unlike a flat tax system, where a single rate is applied uniformly across all profit levels, a system with marginal rates applies different rates to different portions of a company's profit, depending on the amount. The Corporation Tax Marginal Rate system does not operate in the UK. The UK had moved towards a simpler Corporation Tax structure, where all taxable profits from companies are charged at a single Corporation Tax rate, without the application of marginal rates or marginal relief.

The UK's Corporation Tax system has undergone significant changes as of April 2023, introducing a tiered rate structure to replace the previous flat rate. This part of the article explores the basics of Corporation Tax marginal rates, how they are applied, and what businesses need to know to navigate these changes effectively.

What are Corporation Tax Marginal Rates

Understanding Corporation Tax Marginal Rates

From April 2023, the UK government implemented a two-tier Corporation Tax system. Companies now face a 19% tax rate on profits up to £50,000, known as the small profits rate. For profits exceeding £250,000, a main rate of 25% is applied. Between these two thresholds, a marginal rate is introduced, allowing for a gradual increase in the tax rate from 19% to 25%, intended to moderate the impact on growing businesses.

Eligibility for Marginal Relief

Marginal Relief is available to companies with taxable profits between £50,000 and £250,000, offering a bridge between the small profits rate and the main rate. The relief aims to prevent a sudden jump in taxation for businesses as they grow. However, the eligibility for this relief is contingent upon not having associated companies that push the combined profits above the £250,000 threshold, not being a non-UK resident company, and not operating as a close investment holding company.

Calculating Marginal Relief

The Marginal Relief formula, though seemingly complex, essentially provides a deduction from the calculated tax, based on the difference between the upper limit (£250,000) and a company's actual profits. For example, for taxable profits of £75,000, Marginal Relief can significantly reduce the effective tax rate, underscoring the importance of this provision for medium-sized businesses.

Corporation Tax Marginal Rates

Note: This table is a simplified representation and includes hypothetical categories and rates to illustrate how different factors might impact the Corporation Tax rates applicable to a business. Always consult the latest UK government or professional accounting advice to get accurate and current tax rate information.

Corporation Tax Calculator

Note: This calculator provides a basic framework for a Corporation Tax calculator. Real-world tax calculations could be significantly more complex, considering various deductions, reliefs, and specific conditions applicable to different types of businesses. Always consult with a tax professional for accurate tax advice and calculations.

Adjustments for Associated Companies

For businesses with associated companies, the thresholds for both the small profits rate and the main rate are divided by the total number of associated companies, thus altering the eligibility criteria for Marginal Relief. This division aims to ensure fairness and prevent tax avoidance by distributing profits across multiple entities.

Implications and Strategic Considerations

The introduction of the tiered Corporation Tax rates necessitates careful tax planning. Strategies may include revisiting decisions on profit retention versus distribution, investment in R&D or capital assets, and the timing of income and expenditures to optimize tax positions.

As we delve deeper into the nuances of the UK's Corporation Tax system in the following sections, businesses must remain vigilant and possibly seek professional advice to navigate these changes effectively, ensuring compliance while optimizing their tax liabilities.

Implications for Various Business Scenarios

As the UK transitions into the tiered Corporation Tax system in 2024, its effects ripple through various business operations, from research and development (R&D) initiatives to capital investments. This section delves into the specific consequences of these tax rate changes for different business scenarios, underscoring the importance of strategic financial planning.

Impact on Research and Development (R&D)

For companies engaging in R&D, understanding the implications of the new tax rates is critical. Companies previously surrendering losses for tax credits through the R&D scheme must reassess their strategy in light of the corporation tax rate increase from 19% to 25%. An amendment within two years of the period end to reverse the claim allows these losses to save tax at the higher rate. However, companies need to consider the repayment of any previously received credits and the interest on underpayment of tax.

Strategic Tax Planning for Income and Expenditure

The new tax regime necessitates a revisit to year-end tax planning strategies. With the 25% tax rate kicking in for periods ending March 2024 onwards, businesses might need to adjust their income and expenditure strategies. Previously, deferring income and accelerating expenditures were standard practices to leverage lower tax rates. However, with the introduction of the 25% tax rate, these strategies may need to be reevaluated to optimize tax liabilities.

Capital Allowances and Investments

Despite the changes in Corporation Tax rates, the Annual Investment Allowance (AIA) remains at £1 million, and the full expensing regime for new and unused main rate plant and machinery expenditure continues. These allowances offer significant tax relief and should influence investment timing decisions. Strategic planning around capital expenditures, especially when considering the purchase of used assets or those qualifying under special rate expenditures, can lead to substantial tax savings.

Dividends and Profit Distribution

The increase in Corporation Tax rates has direct implications for dividend distribution. With higher taxes on profits, there's less available for distribution to shareholders. This shift might alter company strategies on profit retention versus distribution, especially considering the personal tax implications for shareholders.

Navigating Tax Liabilities with the Marginal Rate

The introduction of a Marginal Rate for profits between £50,000 and £250,000 offers a buffer against the steep jump to the 25% tax rate. This transitional relief necessitates a new approach to tax calculations and financial projections. Companies need to closely monitor their profit levels and make informed decisions to optimize their tax liabilities​.

Considerations for Associated Companies

For businesses with associated companies, the adjusted thresholds for tax rates introduce added complexity. The division of thresholds based on the number of associated entities requires careful profit allocation and tax planning to avoid inadvertently pushing profits into a higher tax bracket.

In this evolving tax landscape, businesses face both challenges and opportunities. Strategic planning, informed by a thorough understanding of the new Corporation Tax rates and their implications, is paramount. Adapting to these changes while optimizing tax liabilities will be crucial for businesses aiming to thrive in 2024 and beyond.

Navigating the New Corporation Tax Landscape

As UK businesses adjust to the tiered Corporation Tax rates introduced in April 2023, navigating this new landscape requires a comprehensive understanding of compliance requirements, strategic tax planning, and the benefits of professional advice. This final section provides insights into these aspects, offering a roadmap for businesses to manage their tax liabilities effectively.

Compliance and Record-Keeping

The transition to a tiered tax rate system underscores the importance of diligent compliance and record-keeping. Businesses must accurately track their profits and associated companies to determine their correct Corporation Tax rate. With the Marginal Relief calculator provided by HMRC, companies can estimate their tax liabilities more accurately. However, the complexity of these calculations necessitates a robust system for record-keeping and financial management.

Strategic Tax Planning: A Forward-Looking Approach

In this new tax era, strategic planning becomes even more critical. Companies should consider long-term strategies, such as investment in qualifying R&D activities or capital assets, which can offer tax advantages. Understanding the nuances of Marginal Relief and how to maximize its benefits will be essential for businesses operating in the profit range of £50,000 to £250,000.

Businesses must also reassess their approach to profit distribution, considering the higher tax rates on profits over £250,000. Decisions around dividend payments, reinvestment in the business, or other forms of profit allocation should be made with both current tax liabilities and future growth prospects in mind.

The Role of Professional Advice

The complexity of the new Corporation Tax rates, combined with the nuanced benefits of Marginal Relief, underscores the value of professional tax advice. Tax accountants and advisors play a critical role in navigating these changes, offering insights into compliance, strategic planning, and optimization of tax liabilities. Their expertise can help businesses understand which tax bracket they fall into, calculate exact liabilities, and plan for future profitability within the context of the new tax regime.

For companies with specific circumstances, such as those involved in oil extraction or operating in Freeports, specialized tax advice becomes even more crucial. These businesses face unique tax considerations and can benefit significantly from tailored advice that addresses their specific needs and opportunities.

The introduction of tiered Corporation Tax rates in the UK marks a significant shift in the tax landscape, presenting both challenges and opportunities for businesses. Adapting to this new regime requires a comprehensive approach, incorporating diligent compliance, strategic planning, and, where necessary, professional advice. By taking proactive steps to understand and leverage the new tax rates and reliefs, businesses can position themselves for sustainable growth and success in the years ahead.

Navigating the complexities of the new tax environment will be paramount for businesses aiming to optimize their tax position while continuing to innovate and expand. The strategic decisions made today will influence the financial health and competitiveness of businesses well into the future.

How to Calculate Marginal Rate Tax Calculation for Corporation Tax

Navigating the Corporation Tax Marginal Rates in the UK requires an understanding of the specific thresholds and rates applied to different levels of profit. With the introduction of the tiered tax system, businesses need to calculate their tax liabilities accurately, taking into account the available Marginal Relief. This guide simplifies the calculation process for businesses to understand their Corporation Tax obligations better.

Understanding the Basics

The UK's Corporation Tax structure includes a small profits rate of 19% for profits up to £50,000 and a main rate of 25% for profits over £250,000. Profits that fall between these two figures are eligible for Marginal Relief, which provides a gradual increase in the tax rate, preventing a sharp jump in tax liability.

Step-by-Step Calculation

  1. Identify Your Taxable Profits: Start by determining your company's taxable profits for the year. This will dictate which tax rate applies and whether Marginal Relief is relevant.

  2. Apply the Small Profits Rate: If your profits are £50,000 or below, apply the 19% rate directly to calculate your Corporation Tax.

  3. Calculate the Main Rate for Higher Profits: For profits above £250,000, apply the 25% rate to calculate your Corporation Tax.

  4. Determine Eligibility for Marginal Relief: If your profits fall between £50,000 and £250,000, you're eligible for Marginal Relief. This relief aims to smooth the transition between the small profits rate and the main rate.

  5. Calculating Marginal Relief: Use the formula: (3/200) x (Upper limit - Taxable Profits). This calculation will give you the amount of relief you can deduct from your calculated tax liability at the main rate.

  6. Final Tax Liability: Subtract the Marginal Relief from the tax calculated at the main rate to find your final Corporation Tax liability.


Let's assume your company has taxable profits of £175,000. Here's a quick run-through:

  • Your profits are between £50,000 and £250,000, so Marginal Relief applies.

  • Calculate the initial tax at the main rate: £175,000 at 25% = £43,750.

  • Calculate Marginal Relief: (3/200) x (£250,000 - £175,000) = £1,125.

  • Deduct the Marginal Relief from the initial tax calculation: £43,750 - £1,125 = £42,625.

  • Your final Corporation Tax liability would be £42,625.

This simplified guide aims to help businesses calculate their Corporation Tax under the UK's tiered system. However, tax laws can be complex, and it's always recommended to consult with a tax professional to ensure accuracy and compliance.

A Hypothetical Real-Life Case Study of Paying Corporation Tax With Marginal Rates

A Hypothetical Real-Life Case Study of Paying Corporation Tax With Marginal Rates

In exploring a hypothetical scenario of a UK-based company grappling with the complexities of Corporation Tax and Marginal Relief, let's delve into a real-life inspired case study. This company, let's call it "Tech Innovate Ltd.," operates in the technology sector and has recently experienced a surge in profits due to successful product launches and strategic market expansions.


Tech Innovate Ltd. is a standalone entity without any associated companies. Its accounting year aligns with the fiscal year, running from April 1st, 2023, to March 31st, 2024. For this fiscal year, Tech Innovate Ltd. reports taxable profits of £175,000. The company is exploring how the new Corporation Tax rates and Marginal Relief could affect its tax liabilities.

Understanding the New Corporation Tax Rates

With the introduction of the tiered Corporation Tax system effective from April 2023, UK companies now navigate through a structured tax regime:

  • Profits up to £50,000 are taxed at the small profits rate of 19%.

  • Profits over £250,000 are subjected to the main rate of 25%.

  • For profits between these thresholds, Marginal Relief applies to taper the tax rate effectively.

Calculating Corporation Tax and Marginal Relief for Tech Innovate Ltd.

Tech Innovate Ltd. finds itself within the Marginal Relief bracket with its £175,000 taxable profit. The calculation of its Corporation Tax liability involves several steps:

  1. Basic Tax Liability Without Relief:

  • Without considering Marginal Relief, the part of the profits above £50,000 would be taxed ostensibly at the main rate. However, due to Marginal Relief, an effective rate will be applied.

  1. Determining Marginal Relief:

  • Marginal Relief formula: (3/200) x (Upper limit - Taxable Profits)​.

  • In Tech Innovate Ltd.'s case: (3/200) x (£250,000 - £175,000) = 0.015 x £75,000 = £1,125.

  1. Effective Corporation Tax Calculation:

  • The company's total tax liability before Marginal Relief would be at 25% of £175,000 (assuming all profits above £50,000 are taxed at the main rate for simplicity) = £43,750.

  • Applying Marginal Relief: £43,750 - £1,125 = £42,625.

However, to refine this further, considering the detailed structure would require applying the 19% rate to the first £50,000 and calculating the specific marginal rate effect on the remaining £125,000, incorporating the relief calculated.

Final Tax Liability with Marginal Rate Application

After applying the Marginal Relief, the effective tax rate on Tech Innovate Ltd.'s profits would be calculated as follows, acknowledging that a portion of the profits falls under the 19% small profits rate and the remainder benefits from Marginal Relief against the 25% rate:

  • First £50,000 at 19%: £9,500.

  • Remaining £125,000 at an effective marginal rate considering Marginal Relief.

Given the complexity of Marginal Relief calculations, businesses often use HMRC's online Marginal Relief calculator to ascertain the precise amount of relief and, by extension, their exact Corporation Tax liability.

Strategic Implications

For Tech Innovate Ltd., understanding the nuances of Marginal Relief allows for more informed financial planning and tax strategy. The ability to accurately forecast tax liabilities under the new tiered Corporation Tax system can influence decisions on profit reinvestment, dividend distribution, and operational budgeting.

Moreover, the case of Tech Innovate Ltd. highlights the importance of diligent financial management and the potential benefits of seeking professional tax advice. As businesses navigate the changing tax landscape, strategic planning becomes crucial in optimizing tax liabilities and supporting sustainable growth.

Tech Innovate Ltd.'s scenario illustrates the practical implications of the UK's new Corporation Tax rates and Marginal Relief for businesses operating within the intermediary profit range. By meticulously calculating their tax liabilities and understanding the available reliefs, UK companies can better navigate the complexities of the tax system, ensuring compliance while optimizing their financial outcomes.

How Can a Tax Accountant Help You With Marginal Rate Corporation Tax

Navigating the complexities of Corporation Tax, especially concerning the Marginal Rate in the UK, is a daunting task for many businesses. The intricacies of tax laws and the ever-evolving financial landscape make it imperative for companies to seek specialized guidance. This is where a tax accountant comes into play, offering indispensable expertise to ensure that businesses not only comply with tax regulations but also optimize their tax liabilities. Here’s an in-depth look at how a tax accountant can assist businesses with Marginal Rate Corporation Tax in the UK.

Understanding the Marginal Rate Corporation Tax

Before delving into the role of a tax accountant, it's crucial to grasp what Marginal Rate Corporation Tax entails. In April 2023, the UK introduced a tiered Corporation Tax system, replacing the flat rate previously in place. This new system imposes a 19% tax on profits up to £50,000 (the small profits rate) and a 25% tax on profits over £250,000 (the main rate). Profits falling between these thresholds are eligible for Marginal Relief, which provides a gradual increase in the tax rate, preventing a sudden leap from 19% to 25%. The calculation of this relief and its application requires precise knowledge of tax laws, highlighting the need for professional assistance.

Strategic Planning and Compliance

A tax accountant plays a critical role in helping businesses navigate these changes. They offer strategic advice on how to structure transactions and operations to minimize tax liabilities within the legal framework. This involves:

  • Analyzing Profit Margins: A tax accountant can help businesses understand their current and projected profit margins, advising on the best strategies to manage their tax rates effectively.

  • Optimizing Tax Liabilities: By understanding the nuances of Marginal Relief, a tax accountant can guide businesses in making informed decisions that optimize their tax liabilities, such as timing of asset purchases or adjustments in business operations.

Calculation and Claiming of Marginal Relief

The calculation of Marginal Relief is complex and requires a detailed understanding of tax laws. Tax accountants are adept at accurately calculating this relief, ensuring businesses pay the correct amount of tax. They can navigate the specifics of the relief calculation, taking into account the taxable profits and any associated companies that might affect eligibility.

Compliance and Reporting

Tax accountants ensure that businesses comply with all tax reporting requirements, mitigating the risk of penalties for non-compliance. They assist in preparing and filing tax returns, ensuring that all necessary disclosures are made and that the calculation of taxes due, including Marginal Relief, is accurate.

Advisory on Tax-efficient Structures

Businesses often need to make strategic decisions about their structure and operations to manage their tax liabilities effectively. Tax accountants provide advice on tax-efficient structuring, including the formation of subsidiaries or restructuring of business activities, to leverage the best possible tax rates under the current legislation.

Navigating Changes in Legislation

Tax laws are subject to change, and staying abreast of these changes is crucial for businesses to maintain compliance and optimize their tax positions. Tax accountants monitor legislative developments, providing timely updates to their clients on any changes that may affect their tax liabilities, including those related to Marginal Rate Corporation Tax.

Audits and Queries from HMRC

Should businesses face audits or queries from HM Revenue and Customs (HMRC), having a tax accountant is invaluable. They can represent the business, providing clear, concise, and accurate information to HMRC, and advocating on the business’s behalf.

Future Planning and Projections

Tax planning is not only about complying with current laws but also preparing for future tax liabilities. Tax accountants assist businesses in forecasting their future profits, tax liabilities, and potential Marginal Relief. This forward-looking approach enables businesses to make strategic decisions today that will benefit their tax positions in the future.

In the intricate landscape of UK Corporation Tax, the guidance of a tax accountant is indispensable for businesses aiming to navigate the complexities of Marginal Rate Corporation Tax. From ensuring compliance and optimizing tax liabilities to strategic planning and handling HMRC audits, tax accountants offer a comprehensive suite of services that support businesses in achieving their financial objectives while adhering to tax laws. Their expertise not only safeguards businesses against the pitfalls of non-compliance but also positions them to take full advantage of the available tax reliefs and incentives, ultimately enhancing their profitability and growth potential.


Q1: What triggers the requirement to start paying Corporation Tax in the UK?

A: A company or organization becomes liable for Corporation Tax from the day it starts doing business, which could include trading, investment activities, or receiving income.

Q2: How do I register my company for Corporation Tax in the UK?

A: You must register your company with HMRC for Corporation Tax within 3 months of starting business activities.

Q3: Are there any exceptions to the Corporation Tax rates for specific industries?

A: Yes, there are special rates and rules for companies involved in oil extraction or oil rights in the UK or UK continental shelf, known as 'Ring Fence' companies.

Q4: How is the taxable profit for Corporation Tax calculated?

A: Taxable profit for Corporation Tax is calculated as your company's or association's income minus deductible expenses and allowances.

Q5: Can charitable organizations in the UK be exempt from Corporation Tax?

A: Yes, charitable organizations may not have to pay Corporation Tax on certain types of income, provided they are used for charitable purposes.

Q6: How does Corporation Tax apply to foreign companies operating in the UK?

A: Foreign companies with a UK branch or office might need to pay Corporation Tax on profits arising from their UK activities.

Q7: What happens if I fail to pay Corporation Tax on time?

A: Late payment of Corporation Tax can result in interest charges and penalties.

Q8: Can I reduce my Corporation Tax bill legally?

A: Yes, there are several ways to reduce your Corporation Tax bill legally, including claiming allowable business expenses, capital allowances, and reliefs for things like research and development.

Q9: How does Marginal Relief affect the Corporation Tax of companies with fluctuating profits?

A: Marginal Relief smooths out the Corporation Tax liability for companies with profits between the lower and upper limits, making it less of a financial burden as profits approach the main rate threshold.

Q10: Is it possible to carry back losses to reduce Corporation Tax?

A: Yes, you can carry back losses to a previous tax year and offset them against profits for Corporation Tax purposes.

Q11: How do associated companies affect Corporation Tax rates?

A: The thresholds for the small profits rate and Marginal Relief are divided by the number of associated companies, potentially increasing the Corporation Tax rate.

Q12: What documentation do I need to provide to HMRC for Corporation Tax?

A: Companies are required to file a Company Tax Return (CT600), including full financial accounts and computations that show how the tax was calculated.

Q13: Can I dispute HMRC's assessment of my Corporation Tax?

A: Yes, if you disagree with HMRC's assessment, you can appeal against it.

Q14: What is the deadline for paying Corporation Tax?

A: The payment deadline for Corporation Tax is nine months and one day after the end of your accounting period for your previous financial year.

Q15: Are there any digital services available to help manage Corporation Tax?

A: HMRC offers digital services, including online registration, tax calculation tools, and electronic filing of returns.

Q16: How are dividends taxed in relation to Corporation Tax?

A: Dividends are paid out of profits after Corporation Tax has been deducted, and they are subject to different tax rates at the individual shareholder level.

Q17: What are the consequences of inaccurately reporting for Corporation Tax?

A: Inaccurate reporting can lead to investigations by HMRC, potential penalties, and charges of tax evasion in severe cases.

Q18: Can I claim relief for environmentally friendly investments?

A: Yes, there are reliefs available for certain environmentally friendly investments and practices.

Q19: What is the role of accounting periods in calculating Corporation Tax?

A: Your accounting period determines which financial year your profits will be taxed in and the applicable tax rates.

Q20: Are there any special considerations for Corporation Tax in Freeports?

A: Yes, companies operating in Freeports may be eligible for special tax reliefs, including enhanced capital allowances.

Q21: Can startup companies benefit from any specific Corporation Tax reliefs in the UK?

A: Yes, startup companies may be eligible for various tax reliefs such as the Seed Enterprise Investment Scheme (SEIS), Research and Development (R&D) tax credits, and the Employment Allowance which can reduce their Corporation Tax liabilities.

Q22: How does the UK's Corporation Tax compare with other countries?

A: The UK's Corporation Tax rates are designed to be competitive to attract business investment. Rates can vary significantly from country to country, with some offering lower rates for certain activities or industries to encourage growth.

Q23: Are there any deadlines for filing Corporation Tax returns?

A: Yes, Corporation Tax returns must be filed within 12 months after the end of the accounting period it covers. However, the tax itself must be paid before the filing deadline, typically nine months and one day after the end of the accounting period.

Q24: What is the penalty for late filing of Corporation Tax returns?

A: Late filing of Corporation Tax returns can result in penalties starting from £100 for being one day late, increasing the longer the delay. Continued failure to file can lead to higher penalties and interest charges on unpaid tax.

Q25: Can I amend a Corporation Tax return once it's been filed?

A: Yes, amendments to Corporation Tax returns can be made within 12 months of the statutory filing date. It's important to correct inaccuracies to avoid potential penalties.

Q26: How do loss-making companies deal with Corporation Tax?

A: Loss-making companies can carry forward their losses to offset against future profits, reducing their Corporation Tax liabilities once they return to profitability. In some cases, losses can be carried back to previous years to reclaim tax paid.

Q27: What are the implications of Brexit on Corporation Tax for UK companies?

A: Brexit has led to changes in how UK companies trade with EU countries, but the fundamental principles of Corporation Tax remain unchanged. Companies should be aware of the impact on import/export duties and VAT.

Q28: Can companies claim relief for environmentally friendly practices?

A: Yes, companies investing in environmentally friendly practices and equipment can claim Enhanced Capital Allowances (ECAs), offering 100% tax relief in the year of purchase.

Q29: How does Corporation Tax apply to dividends received by a company?

A: Dividends received by UK companies from other UK companies are generally not subject to Corporation Tax. However, rules can be different for dividends from foreign companies, depending on various factors including double taxation agreements.

Q30: Are government grants subject to Corporation Tax?

A: Yes, government grants are generally considered taxable income and must be included when calculating your Corporation Tax liabilities.

Q31: How do transfer pricing rules affect Corporation Tax?

A: Transfer pricing rules ensure that transactions between connected companies are conducted at arm's length, affecting how profits are calculated and taxed to prevent tax avoidance.

Q32: What is the Patent Box regime?

A: The Patent Box regime allows companies to apply a lower Corporation Tax rate to profits earned from patented inventions, encouraging innovation and development within the UK.

Q33: Can charitable donations reduce Corporation Tax?

A: Yes, charitable donations made by companies are deductible from total profits, reducing the amount of Corporation Tax owed.

Q34: How does Corporation Tax affect mergers and acquisitions?

A: Corporation Tax considerations are crucial in mergers and acquisitions, impacting the valuation of assets, structuring of the deal, and the overall tax strategy post-merger or acquisition.

Q35: Is there a threshold for small companies' Corporation Tax rate?

A: Yes, the small profits rate applies to companies with profits of £50,000 or less, where a lower Corporation Tax rate of 19% is applied.

Q36: Can a company claim relief for bad debts?

A: Yes, companies can claim relief for bad debts that are recognized as irrecoverable, reducing their taxable profits.

Q37: What constitutes an associated company for Corporation Tax purposes?

A: An associated company is typically one that is controlled by the same person or group that controls another company, influencing the calculation of the small profits rate and Marginal Relief thresholds.

Q38: How are foreign profits taxed under Corporation Tax?

A: Foreign profits of a UK company are generally subject to UK Corporation Tax, with relief for any foreign tax paid to avoid double taxation.

Q39: Can I use accounting software to calculate and file Corporation Tax?

A: Yes, many accounting software solutions are designed to calculate Corporation Tax and can file returns directly with HMRC. However, professional advice can ensure accuracy and compliance.

Q40: What is 'group relief' for Corporation Tax?

A: 'Group relief' allows a company to surrender its losses to other companies within the same group, reducing the overall Corporation Tax liability for the group. This can be particularly useful in strategic financial planning, enabling more efficient use of losses to offset profits elsewhere within the group.



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