─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Redbourn — 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, setting out the company’s Corporation Tax position for the period. In Redbourn, companies of all sizes use professional support to pull together the figures from their accounting records, work through the tax adjustments that turn accounting profit into taxable profit, and submit an accurate CT600 on time. It is important to be clear about what a CT600 is not: it is a separate obligation from the statutory accounts filed with Companies House, and separate again from a Confirmation Statement or a VAT Return. A CT600 reports the Corporation Tax position to HMRC, while statutory accounts are the formal year-end accounts filed at Companies House. Professional CT600 Tax Return Filing brings clarity and convenience to that process — the records are reviewed, the Corporation Tax computation is prepared, the return is checked before submission, and the filing is handled with HMRC so you can get on with running the business.

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 302 reviews 
    
 
 
 
   
 
 
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   Ayotunde Rufai 
 
 
 
 Trustindex verifies that the original source of the review is Google. Best accountants we've ever had. Umer is ace, and makes everything easy and transparent.
  
 
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   Sofia 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a really positive experience with Muhammad. He was incredibly quick to action everything and made the whole process straightforward and stress-free. He took care of everything promptly and kept me informed throughout, which was greatly appreciated.

Muhammad was professional, responsive and genuinely helpful from start to finish. It was clear that he cared about providing a great service and making sure everything was handled properly. I would definitely recommend him to anyone looking for someone reliable, efficient and professional.
  
 
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   Zest For Life 
 
 
 
 Trustindex verifies that the original source of the review is Google. I worked with Accotx on a HMRC reclaim and overall, they did ultimately deliver on their promise, which I appreciate. The process did take longer than any of us expected, partly due to external delays with the tax authorities, and partly because there were some hiccups in communication and follow-up. However, despite those challenges, they stayed professional and stuck to the original agreed terms. If you’re considering using them, be prepared to stay in regular contact to keep things moving along. They are absolutely capable, have the expertise and willing to work with you, and overall  improving their services over time. I would certainly return for any future needs.
  
 
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 Trustindex verifies that the original source of the review is Google. Sterling work. Many thanks to Muhammad and the team for all their help and expertise
  
 
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   Hansen Personal Training 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have been a client for years - very quick responsive and personalised service
  
 
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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 .

What Is a Micro-Entity CT600, and How Does It Relate to Corporation Tax?

There is no separate HMRC form called a “micro-entity CT600”. The CT600 is simply the Company Tax Return that a company submits to HMRC to report its Corporation Tax position, and the same form is used whatever the size of the company, including those that prepare accounts under the micro-entity regime. A micro-entity company can still have Corporation Tax obligations, and where HMRC has issued a notice to deliver a Company Tax Return, or the company otherwise needs to file one, that return is submitted on form CT600. The CT600 itself is distinct from the statutory accounts filed with Companies House, even though the two are prepared from the same underlying accounting records. The company’s accounts, bookkeeping and supporting records typically form the starting point for the Corporation Tax calculation, but the figures used for Corporation Tax are not automatically the same as the accounting figures. Taxable profit can differ from accounting profit because the Corporation Tax computation may require adjustments — for example, items that are allowable for accounting purposes but treated differently for tax, or income and expenditure that fall into a different period for tax. It is also worth separating three things that are often confused: filing the CT600, calculating the Corporation Tax liability, and paying any Corporation Tax that is due. These are related but distinct steps, and whether a micro-entity company actually owes Corporation Tax depends on its own circumstances and taxable position, not simply on its size or accounting framework.

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 Your CT600 Tax Return Filing Be Handled Properly, From Computation to HMRC Submission

Preparing a Company Tax Return is rarely just a matter of copying figures across. The accounting profit in your accounts has to be reviewed, tax adjustments considered, a Corporation Tax computation prepared, and the CT600 completed accurately before it goes to HMRC — all while keeping your Corporation Tax records organised and the filing on track. That is where Micro Entity Accounts can take the weight off. We support companies in Redbourn and beyond with CT600 preparation, Corporation Tax computation work, tax adjustment review, and submission of the Company Tax Return to HMRC, keeping the process clear and the pricing transparent. Whether you are filing for the first time or simply want the paperwork handled by someone who does it regularly, get in touch and let us take your CT600 Tax Return Filing from your records to HMRC.

─── 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 company's details, the period covered, the figures from the Corporation Tax computation and the resulting Corporation Tax liability, together with other information HMRC requires as part of the return. It is an HMRC document and is not the same as the annual accounts filed with Companies House.

Who needs to file a CT600 Company Tax Return?

A company generally needs to file a Company Tax Return where HMRC has issued a notice to deliver one, and there are other circumstances in which a return may be required. Most active limited companies with Corporation Tax obligations will file a CT600 covering their accounting period. If a company is dormant or has not been trading, its position can differ, so it is worth checking the specific circumstances rather than assuming either way.

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

Yes — they are separate documents with separate purposes and separate recipients. Statutory accounts are the formal year-end accounts, prepared under the applicable accounting framework and filed at Companies House. A CT600 is a Company Tax Return submitted to HMRC to report the Corporation Tax position. The two are usually prepared from the same accounting records, which is why they are often dealt with together, but filing one does not satisfy the obligation to file the other.

What is the difference between a CT600 and a Corporation Tax computation?

The Corporation Tax computation is the working paper that starts with the company's accounting profit and applies the tax adjustments needed to arrive at the taxable profit and the resulting Corporation Tax liability. The CT600 is the return form on which those figures are reported to HMRC. In practice the computation is the thinking and the CT600 is the filing, so a well-prepared return depends on a properly prepared computation behind it.

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

Possibly — it depends on the company's circumstances rather than its size. There is no separate “micro-entity CT600u201d; a micro-entity company that is required to file a Company Tax Return uses the same CT600 form as any other company. Preparing micro-entity accounts does not by itself settle the Corporation Tax position, and it does not automatically determine the company's Corporation Tax liability or mean that no return is needed.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the return and paying any Corporation Tax due are separate obligations. The CT600 reports the company's position to HMRC, while payment is a separate transaction. A company can file its return and owe nothing, or owe Corporation Tax and still need to submit the return — and the timing of filing and the timing of payment do not necessarily align. It is worth keeping both in view so neither is overlooked.

What information is needed to prepare a CT600?

Typically you will need the company's accounting records and finalised figures for the period, the statutory accounts or draft accounts, details of income and allowable expenditure, capital allowances information, and any other items that affect the tax position, such as disallowable expenses or untaxed income. Details of any earlier losses, group matters or reliefs claimed may also be relevant. Because taxable profit can differ from accounting profit, the quality of the underlying records has a direct bearing on how straightforward the CT600 is to prepare.

What happens if a company files its CT600 late?

Filing after the due date can lead to penalties and interest from HMRC, and the amount usually depends on how late the return is and the company's circumstances. Rather than relying on general assumptions, it is better to check the specific position and, if a return is already overdue, to deal with it promptly and consider whether any reasonable excuse applies. Getting the return prepared and submitted as early as the figures allow reduces the risk of the deadline becoming a problem.