─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Kings Langley – Prepare and File Your Company Tax Return with HMRC

If your limited company needs to report its Corporation Tax position to HMRC, CT600 Tax Return Filing is the step that turns your accounting records into a submitted Company Tax Return. At Micro Entity Accounts, we help companies in Kings Langley and across the UK prepare their CT600, review the figures behind it, and file the return with HMRC accurately and on time. A CT600 is not the same thing as the statutory accounts you file with Companies House — those are a separate obligation with a separate purpose. The CT600 is the Corporation Tax Return itself, and it reports your company’s taxable profit and the resulting Corporation Tax position after any required tax adjustments. Professional support means your accounting profit is properly reviewed, the adjustments needed to arrive at taxable profit are considered, and the completed return reflects your company’s circumstances rather than a guess. Whether you are a director handling your first Company Tax Return or you simply want the filing taken off your desk, we combine clear, transparent pricing with a straightforward process and a real person to speak to about your Corporation Tax filing.

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.
  
 
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   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 for a Micro-Entity Company?

There is no separate official “micro-entity CT600” form — there is one Company Tax Return, the CT600, and it applies across company sizes. The confusion usually comes from the fact that a micro-entity company prepares its statutory accounts under a simplified accounting framework, and it is easy to assume that the same simplified approach carries straight across to tax. It does not. Accounts preparation and Corporation Tax filing are related but separate processes. A company that meets the micro-entity criteria may still have Corporation Tax obligations, and where HMRC requires a Company Tax Return, that company will need to submit a CT600 reporting its Corporation Tax position for the accounting period. Your accounting records and the accounts you prepare are the starting point for that calculation, but the CT600 does not simply repeat them. Taxable profit can differ from accounting profit, because the Corporation Tax computation may involve adjustments — for example, adding back disallowable expenditure or accounting for items treated differently for tax purposes. Equally, not every micro-entity owes Corporation Tax; whether any Corporation Tax is payable depends on the company’s own taxable position and circumstances. It is also worth keeping the two obligations separate in your mind: filing the CT600 and paying any Corporation Tax that is due are distinct requirements, and meeting one does not automatically satisfy the other. If you are unsure what applies to your company, getting the position reviewed before you file is far easier than correcting it afterwards.

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 Kings Langley

Preparing a Company Tax Return often looks simple until you reach the tax adjustments. Reconciling accounting profit to taxable profit, deciding what needs adding back or deducting, and keeping Corporation Tax records organised enough to support the figures can quickly become the most time-consuming part of a director’s year — and it sits on top of the accounts, the Confirmation Statement and everything else your company has to file. Micro Entity Accounts can take that work off your hands. Our CT600 Tax Return Filing service covers CT600 preparation, the Corporation Tax computation, a review of the tax adjustments behind your taxable profit, and submission of the Company Tax Return to HMRC on your behalf. You get a clear, straightforward process, transparent pricing, and someone who understands the difference between your statutory accounts and your Corporation Tax filing. Get in touch to talk through your company’s Corporation Tax position and let us prepare and file your CT600.

─── 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 Tax Return. It reports a company's income, gains, deductions and reliefs for an accounting period, along with the resulting Corporation Tax position. It is submitted to HMRC rather than to Companies House, and it is the formal way a company tells HMRC how much Corporation Tax it believes is due for that period — or explains why no Corporation Tax is payable.

Is a CT600 the same as a Company Tax Return?

Yes. A Company Tax Return is normally submitted using the CT600 form, so the two terms describe the same filing. Alongside the CT600, HMRC may require supporting information such as a Corporation Tax computation and, in many cases, a copy of the statutory accounts. What HMRC requires depends on the size and circumstances of the company.

Who needs to file a CT600?

A company normally needs to file a Company Tax Return if HMRC has issued a notice to deliver one, or if the company has taxable income, profits or gains for the period. That covers most active limited companies, but the position is not identical for every company — dormant companies, companies with no taxable activity, and certain other cases may be treated differently. If you are unsure whether a return is required for a particular accounting period, it is worth checking rather than assuming.

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

Yes, they are separate documents with separate audiences. Statutory accounts are filed at Companies House and cover the company's financial statements for the period. The CT600 is filed with HMRC and reports the Corporation Tax position. The accounts are usually an important input into the tax calculation, but filing your accounts does not file your Company Tax Return, and filing your CT600 does not file your accounts.

Is a CT600 different from the Corporation Tax computation?

They are related but not the same thing. The Corporation Tax computation is the working that starts with your accounting profit and applies the tax adjustments needed to arrive at taxable profit and the Corporation Tax liability. The CT600 is the return form that reports those figures to HMRC. In practice the two are prepared together, and HMRC will normally expect the computation to support the numbers entered on the CT600.

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

It may well need to, because the requirement to file a Company Tax Return is driven by the company's Corporation Tax position and by whether HMRC has issued a notice to deliver a return — not by the accounting framework used to prepare the accounts. Micro-entity companies can still have taxable profits and Corporation Tax obligations. Equally, not every micro-entity owes Corporation Tax. What is prepared for the statutory accounts under a simplified framework does not automatically decide the Corporation Tax outcome.

How is taxable profit calculated from accounting profit?

The starting point is normally the company's accounting profit for the period. The Corporation Tax computation then adjusts that figure for items treated differently for tax purposes — for example expenditure that is not allowable for tax, income that is treated differently, or capital allowances and other reliefs that reduce taxable profit. The result is the taxable profit on which Corporation Tax is calculated. Because the adjustments depend on the company's own transactions, two companies with identical accounting profits can have quite different taxable profits.

Is filing a CT600 the same as paying Corporation Tax?

No. The CT600 is the filing obligation, and paying any Corporation Tax due is a separate obligation with separate HMRC deadlines. Submitting the return does not itself pay the tax, and paying an amount does not remove the need to file. It is important to keep both in view, and to check whether instalment payments or other arrangements apply to your company based on its circumstances.

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

Yes. A company can appoint an agent to prepare and submit its Company Tax Return to HMRC, provided the necessary authorisation is in place. Many directors choose this route so that the Corporation Tax computation, the tax adjustments and the filing itself are handled by someone who works with CT600s regularly, leaving the director to review and approve the figures.