Corporation Tax Return Service for UK Businesses

Take the stress out of filing your company’s taxes. Pro-AccX provides expert, remote Corporation Tax Return filing support for UK small and medium-sized businesses (SMEs), including limited companies.

Our professional yet approachable team of CT600 accountants ensures your HMRC Company Tax Return is prepared accurately and submitted on time. Focus on running your business while we handle the complexities of your corporation tax compliance in plain English.

corporation tax return service

What Our Corporation Tax Return Service Includes?

Our CT600 filing support covers everything a busy company director needs for peace of mind. We handle all the details of your company tax return so you don’t have to, including:

Calculation of tax liabilities

We accurately compute your corporation tax bill, making sure you only pay what’s due and identifying any allowances or reliefs to minimise your costs.

Financial statements review

A detailed review of your accounts ensures full compliance with HMRC rules. We check that all income and expenses (including allowable expenses) are correctly accounted for, reducing the chance of errors.

CT600 preparation and documentation

Our experts complete the CT600 form (Company Tax Return) and compile all supporting documents (tax computations, notes, etc.) required by HMRC. Every figure is double-checked for accuracy.

Timely HMRC submission

We file your Corporation Tax Return online well before the deadline. We manage the electronic submission in the iXBRL format, so you avoid late filing penalties and get prompt confirmation from HMRC.

Common Corporation Tax Return Challenges for Businesses

Even seasoned business owners find corporation tax rules confusing. Here are some common pain points we help resolve:

  • Late filing penalties: Missing the filing deadline even by a day triggers an automatic £100 fine from HMRC, with penalties increasing for longer delays. Many small businesses get caught out by annual deadlines. Pro-AccX ensures your return is filed on time to avoid costly fines.
  • Confusion over allowable expenses: From travel costs to home office bills, figuring out which expenses are tax-deductible can be perplexing. Mistakes can mean paying too much tax or facing questions later. Our team guides you on what expenses your company can claim, so you never miss out on savings or misclaim by accident.
  • Stressful HMRC communication: Getting letters or queries from HMRC can be stress-inducing. The CT600 form and tax jargon are intimidating for many. We act as your agent, handling all HMRC correspondence on your behalf. If HMRC has questions about your Company Tax Return, we’ll deal with them directly, sparing you the stress and allowing you to focus on your business.

Benefits of Using Pro-AccX for Your Company Tax Return

Choosing Pro-AccX means you’re partnering with a dedicated team that understands the pressures on UK SMEs. Here are some key benefits our corporation tax return service provides to limited companies like yours:

  • Specialist expertise: Our accountants are experienced in UK corporation tax law and stay up-to-date with the latest HMRC regulations. With a Pro-AccX tax expert on your side, you can be confident your CT600 is correct and compliant, avoiding errors that could trigger HMRC scrutiny.
  • Time and stress savings: As a busy business owner, your time is precious. We handle the entire tax return filing process from start to finish – calculations, forms, submissions, and dealing with HMRC – so you save hours of paperwork and undue stress. No more last-minute scrambles or worrying whether you did it right.
  • Deadline compliance – no penalties: Never worry about missing HMRC deadlines again. We keep track of your filing due dates and ensure everything is submitted on schedule. By filing on time and accurately, we help you steer clear of late filing penalties and interest charges.
  • Remote convenience nationwide: Located in Guildford but with fully remote capabilities, Pro-AccX serves clients all over the UK. You get HMRC tax return help for your limited company without leaving your office. Communication is via phone, email, and video – whichever is easiest for you – and document exchange is handled online securely.
  • Personalised, proactive advice: We don’t just file and forget. Our service is tailored to your business. We’ll highlight tax-saving opportunities (like allowable expenses or reliefs you can claim) and remind you of upcoming obligations. By working closely with you year-round, we help you plan ahead and minimise your corporation tax bill legitimately.
  • Professional and approachable service: At Pro-AccX, we pride ourselves on being friendly and easy to talk to. You’ll get no confusing jargon – just clear, actionable advice. We aim to build a long-term partnership, supporting your business growth beyond just one tax return.
Industries experience

Industries

We enjoy working with a wide variety of service businesses.

We work with businesses in professional services, construction, e-commerce, tech, and more, providing financial clarity that supports smarter decisions and sustained growth.

How Our Remote Support For Corporation Tax Filing Works

One of the key benefits of Pro-AccX is that all our corporation tax support is available remotely. You get the help of a professional accountant for your CT600 without the need for in-person meetings, which is ideal for busy entrepreneurs across the UK.

Here’s how our remote process works:

  • Free initial consultation: Start with a free discovery call (phone or video). We’ll discuss your business, financial year-end, and any concerns or special circumstances. This helps us understand your needs and how we can help.
  • Secure document sharing: You can securely send us your financial records – annual accounts, trial balance, expense details, etc. – through our encrypted client portal or via secure email. (If you use cloud accounting software like Xero or QuickBooks, we can work with that too.)
  • Expert preparation & review: Our qualified accountants analyse your numbers and prepare the corporation tax computations and CT600 form. We’ll then review the prepared return with you remotely, explaining everything in plain English. You’ll know exactly how your tax is calculated, with no jargon.
  • Filing & confirmation: Once you’re happy, we file the Company Tax Return electronically to HMRC on your behalf. We confirm the submission and the amount of tax to pay (and payment deadline). With our remote tax return support, geography is no barrier – you receive prompt, professional service whether you’re in Guildford or anywhere in the UK.

Ready to File Your Corporation Tax Return Stress-Free?

Take the hassle out of HMRC compliance with Pro-AccX. If you’re ready to save time, avoid penalties, and maximise your tax savings, let’s chat! Book a free consultation with our team today, or contact us to discuss your corporation tax needs. We’ll provide a no-obligation review and show you how our CT600 filing support can benefit your business.

Let Pro-AccX handle your Company Tax Return so you can focus on what you do best – growing your business.

Discover Our Accountancy Services

From day-to-day bookkeeping and payroll to VAT returns, tax compliance, and detailed management reporting, Pro-AccX offers a complete range of accountancy services tailored to the needs of small businesses across the UK.

Management Accounts

Accurate financial reporting is essential to making informed decisions in your business.

Statuatory Accounts

Ensure your business stays compliant with expertly prepared statutory accounts.

VAT Returns

We help you navigate the regulations and complexities of VAT

Payroll

Take the hassle out of payroll processing with our reliable and compliant payroll service.

Need a personalised solution?

At Pro-AccX, we offer tailored accountancy services designed to meet your unique needs, ensuring you receive the support that fits your business perfectly.

A CT600 is the UK Company Tax Return form that all active limited companies must file with HMRC. It declares your company’s taxable profits and the Corporation Tax due. In short, if you run a limited company (no matter how small or if it made a loss), you are required to file a CT600 annually to stay compliant.

The filing deadline for your CT600 is 12 months after the end of your company’s accounting period. (For example, if your financial year ends on 31 December 2024, the return is due by 31 December 2025.) Important: the tax owed is payable sooner – typically within 9 months and 1 day after your year-end. Pro-AccX will keep you aware of all deadlines and usually prepares your return well in advance, so there’s no last-minute rush.

Yes. Even if your company made zero profit or was dormant, you may still need to file a nil Company Tax Return (to tell HMRC no corporation tax is due). HMRC sends a “Notice to deliver a tax return” to limited companies, and you must comply with it. We can advise if your company is exempt in any year, but generally an active company should file a CT600 every year.

Absolutely. If you’re nearing the deadline, contact us immediately – we specialize in fast turnaround for late or overdue returns. Our team will work quickly to prepare and submit your CT600 as soon as possible to minimise penalties. If you’ve already incurred a late filing penalty, we can guide you on next steps and, if applicable, help communicate with HMRC. The sooner you get up to date, the better – and we’re here to make that process smooth.

We make it easy through our secure digital channels. After your initial consultation, we’ll let you know what documents are needed (usually your finalized accounts, trial balance, and details of any adjustments or reliefs). You can upload scans or files via our encrypted client portal or send them via secure email. If you use online accounting software, we can often directly collaborate through that platform. Throughout the process, we’re available by phone or email for any questions. Our remote support approach means you get the same personal service as an in-person meeting, but without the time and travel hassle.

Yes – we’re a full-service accountancy firm. Alongside Corporation Tax returns, we offer annual accounts preparation, bookkeeping, VAT returns, personal tax (Self Assessment), payroll, and more. Many of our clients take advantage of our comprehensive financial services so that all their accounting and tax compliance is handled under one roof. If you have additional needs, just ask during your consultation and we’ll be happy to help or advise.

Get a personal consultation.

Office

Pro-AccX

58 Applegarth Avenue
GU2 8LY
Guildford

Contact

h.kulinska@pro-accx.co.uk

Open Hours

Monday – Friday: 8 am – 8 pm
Saturday: 9 am – 1 pm