─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in High Wycombe – Prepare and File Your Company Tax Return with HMRC

CT600 Tax Return Filing is the process of preparing and submitting your company’s Company Tax Return to HMRC, reporting the company’s Corporation Tax position for the relevant accounting period. Professional support in High Wycombe can help you pull together the figures, work through the tax adjustments that turn accounting profit into taxable profit, and submit an accurate CT600 on time. It is important to understand that the CT600 is not the same thing as your statutory accounts: statutory accounts are filed separately with Companies House, while the CT600 goes to HMRC and deals specifically with Corporation Tax. Good CT600 Tax Return Filing brings accuracy, clarity and convenience – your records are reviewed, the tax computation is prepared with care, and the filing itself is handled so you are not left wrestling with unfamiliar forms.

CT600 TAX RETURN FILING

(Turnover up to £100K)

£499.00

+vat

CT600 Return Preparation
Corporation Tax Computation
Tax Adjustment Review
Allowable Expenses Review
HMRC CT600 Filing
Filing Deadline Support

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Trusted by Micro-Entity Businesses Across the UK

From newly incorporated companies to established owner-managed businesses, our clients trust us to prepare their accounts accurately and handle their annual filing requirements.

      EXCELLENT  
   Based on 300 reviews 
    
 
 
 
   
 
 
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   Jamie Fletcher 
 
 
 
 Trustindex verifies that the original source of the review is Google. It was a pleasure working with Anum on our accounts. The whole process was swift and effortless, and it was one less thing to worry about. I'd highly recommend them.
  
 
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   Mansur Liman 
 
 
 
 Trustindex verifies that the original source of the review is Google. Accotax have been our accountants for many years now. We maintained them, because of their professionalism. In the last coiple of years, i have working with Imran, who has been very professional and helpful in guiding us through the whole process explaining and clarifying every aspect of it. Very prompt in responding to questions and patient with us even when we seem to be slow. I really enjoy working with him. Thank you
  
 
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   Muna Mohamoud 
 
 
 
 Trustindex verifies that the original source of the review is Google. I highly recommend Imran to anyone looking for a reliable and knowledgeable accountant. He helped me sort out a very complicated backlog of accounts and prepared my overdue tax returns with professionalism and attention to detail. Throughout the process, he was incredibly patient, took the time to answer all of my questions, and explained everything clearly. He guided me through each step and helped rectify issues that had built up over time, making what felt like an overwhelming situation much more manageable. I'm very pleased with the service I've received and truly appreciate his support. If you need help with your accounts or taxes, I would highly recommend Imran.
  
 
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   Sergey M 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a positive experience with Accotax. The work was completed promptly, my tax return was successfully filed, and I received a refund of overpaid tax. I found the cooperation efficient and helpful. Special thanks to Muhammad Saifullah for his assistance.
  
 
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   Ebba Qureshi 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fabulous team at ACCOTAX - very efficient and good response time . Honest and professional with their work. I would highly recommend them even if you’re a young start up - or a large business they have it covered .
  
 
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   Mael Leboucher 
 
 
 
 Trustindex verifies that the original source of the review is Google. We worked with a few different accountants before finally settling with Accotax, and we’re really glad we did. Their team is great. Abdul is responsive and easy to reach whenever I have a question, which makes a big difference. They take the time to understand how our business works and what our needs are. They are very knowledgeable, and when they don’t have the answer straight away, they take the time to look into it and get back to us quickly. Anum, who looks after our account on a day-to-day basis, including reconciling invoices and preparing the annual accounts, is amazing. She is professional, efficient, and follows the processes we have put in place together. She's also very quickin getting back to us whenever needed. We’re very happy to work with her and hope to continue doing so for as long as possible. Overall, Accotax has made our accounting experience much smoother and easier. We see them as a long-term partner as our business continues to grow. I would 100% recommend them.
  
 
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   3rd Hub 
 
 
 
 Trustindex verifies that the original source of the review is Google. Imran provides a very dependable and straightforward accounting service. He is always responsive and professional when managing our accounts. Excellent support.
  
 
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   Martin Tyrrell 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have really impressed to date with all dealings with Accotax highly enough. From day one, they've made what can often be a complicated and stressful part of running a business feel straightforward and hassle-free. A special mention has to go to Anum, who has been friendly, incredibly responsive, and genuinely cares about providing the best possible service. No question is ever too much trouble, and she consistently goes above and beyond to make sure everything is dealt with efficiently. I wouldn't hesitate to recommend you to anyone looking for an accountant they can genuinely trust.
  
 
      Posted on Google  
   
   Matthew Lyon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great speedy service and very personable. Anum dealt with my income certificate and did everything quickly and helped me out massively. Very happy with the service provided.

What Is a Micro-Entity CT600? Understanding CT600 Tax Return Filing for Small Companies

There is no separate official HMRC form called a ‘micro-entity CT600’ – the CT600 is the standard Company Tax Return used by companies to report their Corporation Tax position, and companies that operate as micro-entities use the same form as everyone else. Where a micro-entity company is within the scope of Corporation Tax, it may need to prepare and submit a Company Tax Return to HMRC, and the accounting records and accounts it prepares can form the starting point for the Corporation Tax calculation. This is where the distinction between accounts and tax matters: the profit shown in your accounts is your accounting profit, but the Corporation Tax computation may need adjustments – for example, adding back disallowable expenditure or deducting items treated differently for tax – before taxable profit and any Corporation Tax liability are worked out. Whether a particular micro-entity company owes Corporation Tax, and whether a return is required, depends entirely on its own circumstances and taxable position, so it is worth checking rather than assuming. It is also worth remembering that filing the CT600 and paying any Corporation Tax due are two separate obligations: submitting the return does not itself settle the tax, and payment is handled separately from the filing. Bear in mind too that a company’s accounting framework, such as FRS 105, affects how the accounts are prepared – it does not by itself determine the Corporation Tax liability.

What a Complete CT600 Submission Includes

The CT600 Form

Company details, accounting period, turnover, profit and the tax calculation.

Tax Computations

A working showing how accounting profit is adjusted into taxable profit.

iXBRL Accounts

Your statutory micro-entity accounts, machine-tagged to HMRC's taxonomy.

Supporting Schedules

Capital allowances, losses, directors' loans and any claims or reliefs.

─── OUR CT600 SERVICE

What's Included in Our CT600 Preparation Service?

Our fixed-fee service covers everything a qualifying micro-entity company needs to complete and file its Corporation Tax Return correctly and on time.

CT600 Return Preparation

Preparation of your Company Tax Return (CT600) from your bookkeeping records, ready for HMRC submission.

Corporation Tax Computations

Full tax computations showing how your taxable profit and Corporation Tax liability have been calculated.

Accounts & Tax Computation Support

Micro-entity accounts tagged in iXBRL format and attached to your CT600 as HMRC requires.

Allowances & Reliefs Review

We check capital allowances, allowable expenses and available reliefs so nothing is claimed twice or missed.

HMRC Filing & Deadline Tracking

Online submission to HMRC plus reminders for your payment and filing deadlines.

─── How It Works

How Our CT600 Tax Return Filing Service Works

Share Your Company Records

Provide the accounting records and relevant company information required to prepare the return.

Review Your Accounting Figures

Review the financial information and identify relevant Corporation Tax adjustments.

Prepare the CT600

Prepare the Company Tax Return and supporting tax computation based on the company's circumstances.

Prepare the CT600

Prepare the Company Tax Return and supporting tax computation based on the company's circumstances.

Review & Approve

You review the information and confirm the return before submission.

File With HMRC

Submit the Company Tax Return through the appropriate HMRC filing process.

─── WHY CHOOSE US

Why Choose Our CT600 Tax Return Filing Service?

We keep Corporation Tax simple, transparent and predictable for busy company directors, with fixed fees agreed before any work begins.

Micro-Entity Expertise

We work exclusively with small limited companies filing under FRS 105, so the CT600 is routine work for us.

Accurate Accounts Preparation

Every adjustment, disallowed expense and capital allowance claim is documented and explained in plain English.

Tax & Filing Support

Missed a deadline? We prepare overdue CT600 returns quickly to limit penalties and interest building up.

Clear Fixed-Fee Pricing

One transparent fee covers preparation, iXBRL tagging and HMRC submission of your Corporation Tax Return.

───WHO WE HELP

CT600 Support for Micro-Entities Across the UK

We support qualifying micro-entity companies across London and the UK, from one-director businesses to consultants and online companies.

One-Director Companies

Straightforward CT600 preparation for owner-managed limited companies with simple salary and dividend structures.

Limited Companies Run by Freelancers & Contractors

Corporation Tax returns for contractors trading through qualifying micro-entity limited companies.

Startups & Small Companies

First-year and dormant-to-trading CT600 filings for newly incorporated and growing micro companies.

CT600 Deadlines and Late Filing Penalties

Corporation Tax has two separate deadlines, and HMRC charges penalties that increase the longer a return stays outstanding.

How late the CT600 is	HMRC penalty
1 day late	£100
3 months late	A further £100
6 months late	HMRC estimates your tax bill and adds 10% of the unpaid tax
12 months late	A further 10% of any unpaid tax

Penalty levels are set by Companies House and may change. Separate HMRC penalties and interest apply to a late Corporation Tax return and unpaid tax. Check the updated guide here.

Let Us Handle Your CT600 Tax Return Filing in High Wycombe

Filling in a Company Tax Return can quickly become complicated: the form asks for figures that do not always match your accounts, the tax adjustments need careful thought, and the records behind the numbers have to hold together if HMRC asks questions later. Micro Entity Accounts helps companies in High Wycombe and beyond take the strain out of CT600 Tax Return Filing, with support covering CT600 preparation, the Corporation Tax computation, a review of the tax adjustments that bridge accounting profit and taxable profit, and submission of the Company Tax Return to HMRC. We keep the process clear and straightforward, with transparent, fixed-fee options so you know where you stand before work begins. If your accounting period has ended and your Company Tax Return is on your mind, get in touch with Micro Entity Accounts and let us take your CT600 Tax Return Filing from first figures to final submission.

─── FAQs

Micro-Entity CT600 FAQs

Still unsure where you stand? Reach out to our UK team at info@microentityaccounts.co.uk and we will review your filing history with you.

What is a CT600?

A CT600 is the form HMRC uses for a company's Company Tax Return. It is the document through which a company reports its Corporation Tax position for an accounting period – setting out figures such as turnover, trading profits, allowable deductions and any tax already paid – and it is submitted to HMRC rather than to Companies House. The CT600 is usually supported by a Corporation Tax computation and, in many cases, a copy of the statutory accounts.

Is a CT600 different from statutory accounts?

Yes – they are two separate filings with two separate bodies. Statutory accounts are prepared under an accounting framework and filed with Companies House, while the CT600 is a tax return submitted to HMRC that reports the company's Corporation Tax position. Although the accounts are normally prepared first and often submitted alongside the CT600, the figures in a tax return may differ from the accounts because tax rules are not identical to accounting rules.

Does a micro-entity company need to file a CT600?

It depends on the company's circumstances. A company that operates as a micro-entity is not automatically exempt from Corporation Tax, and where HMRC has issued a notice to file a Company Tax Return, the company is expected to complete and submit one. Equally, not every micro-entity will owe Corporation Tax – whether tax is payable depends on the company's taxable profit and its own tax position. If you are unsure whether a return is required, it is worth checking with an accountant rather than assuming either way.

How is taxable profit calculated from accounting profit?

The process normally starts with the accounting profit shown in the company's accounts and then adjusts it for tax purposes. Some expenses allowed in the accounts may be disallowed for tax, some income may be treated differently, and capital allowances or other reliefs may apply in place of accounting depreciation. The result of those adjustments is the taxable profit, which is then used to work out the Corporation Tax liability. That final computation is what feeds the figures reported on the CT600.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the CT600 and paying any Corporation Tax that is due are separate obligations with separate processes. Submitting a Company Tax Return to HMRC reports the company's position; it does not itself transfer money to HMRC. A company may file its return and still need to make a payment separately, and the amount payable depends on the taxable profit and any reliefs, credits or payments already made.

Can someone prepare and file a CT600 on behalf of a company?

Yes. Company directors remain responsible for the accuracy of what is submitted, but the preparation and filing work is commonly carried out by an accountant or tax agent acting on the company's behalf. That typically involves gathering the accounting records, preparing the Corporation Tax computation, reviewing the tax adjustments, and submitting the Company Tax Return to HMRC using the appropriate agent arrangements.

What information is needed to prepare a CT600?

Typically the accountant will need the company's accounting records for the period – bookkeeping or management figures, bank statements, sales and purchase records, payroll information and details of any assets purchased or sold. It also helps to have the previous year's Company Tax Return and computation, details of any payments already made towards Corporation Tax, and information about any income or expenses that need special tax treatment. The more complete the records, the smoother the CT600 Tax Return Filing process tends to be.

Can a company file its CT600 without filing its accounts?

The two are linked but not identical obligations. The Corporation Tax computation that supports a CT600 is normally built from the company's accounts, so the accounts usually need to have been prepared – or at least finalised – before the return can be completed accurately. Filing statutory accounts with Companies House is a separate requirement, and the deadlines and processes for the two filings are not the same. Where a company is unsure how the two fit together, professional guidance can help clarify the order of events.

What happens if a company files its CT600 late?

If a Company Tax Return is submitted after the date HMRC expects it, HMRC may apply penalties and interest, and the amount can depend on how late the return is and on the company's circumstances. Filing late does not change the underlying Corporation Tax position, and a return will still normally need to be submitted. If you are concerned that a deadline has been missed, the practical step is to get the return prepared and filed as soon as possible and to take advice on the position.