Expert Tax Planning, Filing, and Compliance Solutions Tailored to Your Company’s Structure, Stage, and Strategy.

UK corporation tax is one of the most critical financial responsibilities for limited companies, yet it’s more than just crunching numbers for HMRC. It involves managing risks, comprehending available reliefs, interpreting changing laws, and matching your tax position with your business plan.

By offering proactive, strategic, and completely customized UK Corporation Tax solutions for startups, SMEs, and large enterprises, we go above and beyond the requirements of filing. With our assistance, you will not only fulfill HMRC regulations but also obtain clarity, save money, and maintain your focus on growing your business.

What Is Corporation Tax and Why Is It Important?

Limited companies in the United Kingdom are required to pay corporation tax on their taxable profits. Profits from investments, trading, and chargeable gains (such as asset sales) are all included in this. Limited companies are legally obligated to compute, report, and pay UK corporation tax annually; sole proprietors and partnerships are exempt from this requirement.

Businesses must determine and file a corporation tax return annually using the CT600 form. However, many people lose out on chances to lower liabilities or run the risk of fines because of mistakes, inaccurate filings, or inadequate planning. Corporation tax is an important component of your financial and operational strategy that goes beyond simple compliance. It affects:

• Cash flow and reinvestment decisions

       • Distributions of dividends

       • Planning for capital

       • Strategies for business exits

       • Shareholder remuneration

You can transform corporation tax from a regulatory burden into a competitive advantage with the right guidance.

Who Pays Corporation Tax?

In the UK, the following businesses must register and pay corporation tax:

    •     Limited Companies (LTDs)

    •    Foreign companies operating through a UK branch

    •    Clubs, societies, and non-charitable associations

    •    Co-operatives and community interest companies (CICs)

    •    Some housing associations

    •       Social enterprises engaged in commercial activities

Partnerships and sole proprietorships are exempt from corporation tax, but as soon as your company is incorporated, you must start paying it.

Rates of Corporation Tax as of 2025

Rates of Corporation Tax as of 2025

In April 2023, the Corporation Tax rates were modified and are now applied gradually:

        •  Main Rate: 25% for profits over £250,000 that are taxable

       •  Rate of Small Profits: 19% for businesses making up to £50,000

       •  Marginal Relief: Provides a tapered rate between 19% and 25% for businesses with profits between £50,000 and £250,000.

The thresholds may be lowered for group companies or companies with related businesses. For a corporation tax return to be in compliance, the appropriate rate must be correctly identified and applied.

Key Corporation Tax Deadlines

         Timelines for filing and payment are crucial:

      •    Within 12 months following the conclusion of the business’s accounting period, the Corporation Tax Return (CT600) is due.

      •    Within nine months and one day following the conclusion of the accounting period, taxes must be paid.

     •   Accounts must be filed with Companies House nine months following the end of the fiscal year (private companies only).

There are automatic penalties, interest charges, and possible audits for missing these deadlines.

Our Complete Corporation Tax Services: How We Help

Depending on the industry, organizational structure, and growth stage of your business, we offer a comprehensive range of corporate tax services. Among our offerings are

1. Accurate Corporation Tax Calculation & HMRC Filing

After carefully calculating your taxable profits and applying all relevant deductions, we file your CT600 return. Our work is consistently supported by comprehensive internal checks and documentation.

We offer the following services:

  • Getting ready to calculate corporation tax

  • Filling out and sending in the corporation tax return (CT600)

  • Determining capital allowances and allowable expenses

  • Capital gains and asset sales reporting

  • Including dividends, directors’ compensation, and associated tax implications

  • Sending out reminders for payments to adhere to deadlines

To guarantee accurate, digital submissions, we collaborate with industry-leading tools like Xero, QuickBooks, and TaxCalc.

2. Strategic Corporation Tax Planning

In addition to submitting numbers, we offer year-round assistance in managing and reducing your tax obligation. We offer the following planning services:

  • Making your company tax-efficient

  • Timing income and expenses as efficiently as possible

  • Giving advice on pre-year-end planning and tax-deductible purchases

  • Planning for compensation (salary vs. dividends)

  • Intragroup reliefs and group structuring

  • Giving advice on director loans, bonuses, and pension contributions

  • Tax effectiveness when purchasing or disposing of stocks, companies, or real estate

3. Assistance for New and Startup Businesses

Just getting started? We offer every support that is required:

  • Setting up your business to pay corporation tax to HMRC

  • Configuring digital tools for tracking taxes and accounting

  • Outlining due dates, roles, and maintaining financial records

  • Getting your first CT600 return ready and filing it

  • Giving advice on dividends and director compensation from the beginning

We streamline the procedure so you can focus on starting your company without worrying about taxes.

4. Ongoing Compliance & Corporate Tax Health Checks

To make sure your business maintains compliance and takes advantage of all available tax-saving options, we provide routine reviews. These consist of:

  • Examining the accuracy of bookkeeping and accounting

  • Verifying any overlooked deductions and allowances

  • Evaluating capital assets, R&D eligibility, and company vehicle policies

  • Examining carry-forward plans and trading losses

  • Observing modifications to laws and HMRC policies

  • Analyzing intercompany loans or related party deals

5. HMRC Investigations, Audits, and Conflict Settlement

Are you dealing with a Corporation Tax review or inquiry? As your first line of defense, we are:

  • Speaking to HMRC on your behalf

  • Answering inquiries and requests for information regarding CT600

  • Assisting you with compliance checks and investigations

  • Defending your interests in appeals, penalties, and disputes

  • Voluntary corrections and disclosures to preserve your compliance record

Our objectives are to reduce risk or cost to your business and to promptly resolve conflicts.

Who Needs Corporation Tax Help?

Compliance with corporation tax can be challenging, particularly for:

• New Business Owners

It can be very difficult to navigate your first year of trading. From the start, we’ll make sure your taxes are calculated correctly and walk you through your responsibilities.

• SMEs

Our professional advice, strategic planning, and outsourced support are beneficial to small and medium businesses that have limited in-house finance teams.

• High-Growth Startups

Businesses that are scaling frequently experience quick changes in their revenue, investments, and structure. We make sure that as you grow, you continue to fulfill your responsibilities.

• Tech, eCommerce, and Digital Firms

You need professional Corporation Tax advice if you work in the digital sector because of R&D reliefs, IP income, and international transactions.

• Investment Firms

If you receive income from capital gains, dividends, or rentals, we assist you in properly declaring your income and applying for reliefs like rollover or indexation.

• Contractors & Personal Service Companies (PSCs)

In order to maintain compliance and efficiency, we assist you with IR35, salary/dividend structures, and low-admin CT600 submissions.

What Sets Artifin Accountants Apart?

We combine extensive knowledge, tailored service, and proactive compliance. Here’s what sets us apart:

  •   Experts in Corporation Taxation
Our years of experience in a variety of industries have given us the ability to manage intricate reliefs, structures, and planning techniques.

  •   Tailored Assistance for Each Company
We customize our service to fit your objectives, size, and industry, whether you are a growing group business or a sole proprietor.

  •   Advice in Real Time & Digital Resources
Through the use of programs like Xero, QuickBooks, and TaxCalc, we expedite tax preparation and guarantee accurate, timely filing.

  •   No Hidden Costs
We are completely open about our prices. From the beginning, you are aware of what is and is not included, as well as the total cost.

  •   Comprehensive Tax Assistance
We handle every step of your tax journey under one roof, from incorporation to capital gains and exit planning.

Common Tax Errors in Corporations That We Help You Avoid

  •   Missing Deadlines: Penalties and interest are incurred for late filing or payment. We handle submissions and provide you with timely reminders.

  •   Ignoring Deductions: A lot of businesses fail to claim capital allowances or legitimate expenses. We assist you in maximizing each return.

  •   Income Misclassification: Errors may arise from a lack of clarity regarding trading income, capital gains, and investment income. We keep it clear.

  •   Inadequate Director Tax Planning: If you take dividends without budgeting for your salary or loans, you may end up with unforeseen liabilities. We align your compensation in a tax-efficient manner.

  •   Poor Documentation: HMRC demands evidence. We assist you in keeping your books clean by integrating cloud software.

  •   Ignoring R&D or AIA Reliefs: We assist you in claiming valuable reliefs that you may be eligible for if you are investing or innovating.

How It Operates—Our Comprehensive Procedure

1. Consultation for Free
   We understand your business, structure, and Corporation Tax history.
2. Tax Health Check or Configuration
   We examine your financial records or register your new business with HMRC for CT.
3. Strategy & Computation
   We determine your obligations, apply for all reliefs that are available, and make efficient plans for the future.
4. Submission to HMRC
   Together with all necessary supporting documentation, we promptly and digitally file your CT600 return.
5. Continuous Assistance
   For questions, reviews, or upcoming returns, we are available all year long.

Is Corporation Tax Holding You Back?

We are here to make UK corporation tax easier for you, whether you are starting a new company, growing your operations, or dealing with complicated compliance requirements. Give the numbers, deadlines, and strategy to our professionals so you can concentrate on what really counts: expanding your company.

Have a question? Do you need advice? Simply complete the form on this page, and we will contact you to set up your free consultation. We give your business the clarity, assurance, and compliance it needs for everything from first-year filings to long-term tax planning.

Corporation Tax Made Clear, Compliant, and Stress-Free

Start Your Corporation Tax Journey With Confidence

Simplify your corporation tax responsibilities in the UK with professional assistance tailored to your company. To learn how our comprehensive Corporation Tax solutions can position your business for success, get in contact for a free consultation.