─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Leighton Buzzard – Prepare and File Your Company Tax Return with HMRC

CT600 Tax Return Filing is the process of preparing and submitting a company’s Company Tax Return to HMRC so that its Corporation Tax position for an accounting period is reported correctly. Our service in Leighton Buzzard takes the paperwork off your desk: we review your accounting records, work through any tax adjustments needed to turn accounting profit into taxable profit, prepare the Corporation Tax computation and submit the CT600 to HMRC on the company’s behalf. It is important to understand that the CT600 is separate from the statutory accounts filed with Companies House — these are two different documents, sent to two different bodies, and one does not replace the other. Our aim is straightforward: accurate figures, clear explanations in plain English, and a filing process that fits around running your business. We offer fixed-fee options and transparent pricing, so you know where you stand before we begin.

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 
    
 
 
 
   
 
 
       Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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 .
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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 CT600 and How Does It Apply to Micro-Entity Companies in Leighton Buzzard?

There is no separate official form called a ‘micro-entity CT600’. There is simply the CT600, which is the Company Tax Return that a limited company uses to report its Corporation Tax position to HMRC — and micro-entity companies use exactly the same return as everyone else. Where micro-entities differ is in how their statutory accounts are prepared. A company that qualifies as a micro-entity may prepare and file simpler accounts, and it may apply a reduced disclosure framework such as FRS 105. That choice of accounting framework affects the accounts filed with Companies House; it does not by itself decide whether Corporation Tax is payable or how much is due. A micro-entity company still has Corporation Tax obligations where its circumstances mean it has a filing requirement, and in those cases it needs to submit a Company Tax Return (CT600) to HMRC. The accounting records and accounts form the starting point for the Corporation Tax calculation, but the taxable profit is not always the same as the accounting profit. The Corporation Tax computation may include adjustments — for example, adding back disallowable expenditure or deducting items treated differently for tax — before the taxable profit and any Corporation Tax liability are determined. Whether Corporation Tax is actually payable depends on the company’s own circumstances and taxable position, and filing the CT600 is a separate obligation from paying any Corporation Tax that is due.

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.

Make CT600 Tax Return Filing in Leighton Buzzard Simple and Stress-Free

Preparing a Company Tax Return is rarely anyone’s favourite job. The figures have to tie back to your accounting records, the tax adjustments have to be identified and explained, and the completed CT600 has to reach HMRC within the period it sets. Micro Entity Accounts works with companies across Leighton Buzzard to take that burden away, covering CT600 preparation, the Corporation Tax computation, a review of tax adjustments to your accounting profit, and submission of the return to HMRC. We keep your Corporation Tax records organised and explain the position clearly, so you understand what has been filed and why. Get in touch and let us handle the detail while you get on with running the business.

─── 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 used to submit a Company Tax Return to HMRC. It sets out a company's Corporation Tax position for an accounting period, including the figures from which taxable profit is calculated and the amount of Corporation Tax due (if any). In practice, the CT600 is the headline return, supported by a Corporation Tax computation and, in most cases, a copy of the statutory accounts. It is a tax filing made to HMRC, not a Companies House document.

Who needs to file a CT600 Tax Return with HMRC?

A UK limited company generally needs to file a Company Tax Return for each accounting period, unless HMRC has confirmed that no return is required. The same applies to many other entities that fall within the Corporation Tax system. Whether a specific company has a filing obligation — and for which periods — depends on its own circumstances, so it is always worth checking rather than assuming. Where a return is required, it must be submitted to HMRC by the deadline that applies to that company's accounting period.

Is a CT600 different from the statutory accounts filed with Companies House?

Yes — they are two separate documents with two separate purposes. Statutory accounts are prepared under an accounting framework and filed at Companies House, where they become publicly available. The CT600 is a tax return submitted to HMRC, reporting the company's Corporation Tax position. The accounts are usually attached to the Company Tax Return and used as the starting point for the tax calculation, but filing accounts does not discharge the CT600 obligation, and filing a CT600 does not discharge the accounts obligation.

Is a CT600 the same as a Corporation Tax computation?

No, though the two work together. The CT600 is the return form itself, containing boxes that report the key figures to HMRC. The Corporation Tax computation is the supporting working that shows how you got there — starting with accounting profit, applying the relevant tax adjustments, and arriving at taxable profit and the resulting liability. A well-prepared CT600 is effectively a summary of a computation that has been worked through properly.

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

A micro-entity company uses the same CT600 as any other company — there is no separate micro-entity version of the form. Whether it needs to file one depends on its Corporation Tax circumstances rather than its size or accounting framework. Preparing simpler statutory accounts under a reduced disclosure framework such as FRS 105 is an accounts decision; it does not automatically determine Corporation Tax liability or remove any filing requirement the company may have.

How is taxable profit calculated from accounting profit?

Accounting profit is the starting point. From there, the Corporation Tax computation may need to add back items that are not allowable for tax, deduct items that are treated differently under the tax rules, and account for reliefs or allowances the company can claim. Capital expenditure, for example, is usually dealt with through capital allowances rather than as an ordinary expense. The result is taxable profit, which may be higher or lower than the accounting profit. The specific adjustments depend on the company's transactions and circumstances.

Is filing a CT600 the same as paying Corporation Tax?

No — these are two distinct obligations. Filing the CT600 is about reporting the position to HMRC on time; paying Corporation Tax is about settling whatever liability the company owes, and the payment deadline is not necessarily the same as the filing deadline. A company can have a filing obligation even where no Corporation Tax is payable, and a company with tax to pay still needs to submit the return. It helps to treat the two as separate diary items.

What happens if a CT600 is filed late?

If a Company Tax Return is submitted after the deadline that applies to it, HMRC can charge penalties and interest, and the amounts depend on how late the return is and on HMRC's published rules rather than on anything we decide. Late filing can also delay certainty over the company's tax position. The practical answer is to get the figures ready early: keeping clean records through the year, and having a professional prepare and file the CT600 on the company's behalf, makes it far easier to meet the filing date without a last-minute scramble.