─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Rainham: 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 so that your Corporation Tax position is reported accurately and on time. Our service in Rainham supports directors and business owners through the whole process: reviewing your accounting records, preparing the Corporation Tax computation, identifying the tax adjustments that turn accounting profit into taxable profit, and filing the CT600 electronically with HMRC. It is important to remember that a CT600 is separate from the statutory accounts you file with Companies House, and separate again from your Confirmation Statement and any VAT Returns. We help you keep those obligations clearly distinguished, so the figures reported to each authority are consistent, well supported and easy to understand.

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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   Pete Wrist 
 
 
 
 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 Fit With Corporation Tax?

There is no separate official “micro-entity CT600” form. The CT600 is HMRC’s Company Tax Return, and it is used by companies of all sizes — including those that meet the micro-entity criteria for accounting purposes. If your company is a micro-entity, you may be able to prepare and file simpler statutory accounts with Companies House under a reduced disclosure framework, but that accounting choice does not remove your Corporation Tax obligations. Where HMRC requires a Company Tax Return, the company still needs to report its Corporation Tax position on a CT600. The accounts you prepare are often the starting point for that work, but they are not the end of it: accounting profit is calculated under accounting rules, while taxable profit is calculated under tax rules, so the Corporation Tax computation may require adjustments — for example, for disallowable expenditure, capital allowances or income treated differently for tax purposes. Filing the CT600 and paying any Corporation Tax due are also separate obligations: the return reports the position, while payment settles the liability. Whether your micro-entity company actually owes Corporation Tax depends on its own circumstances and taxable position.

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 Take the Pressure Out of Your CT600 Tax Return Filing in Rainham

Preparing a Company Tax Return can quickly become complicated once you move from your bookkeeping figures to a taxable profit calculation, with adjustments, allowances and supporting records to keep in order. Micro Entity Accounts works with companies in Rainham and across the UK to make that process straightforward: we handle CT600 preparation, build the Corporation Tax computation from your accounts, review the tax adjustments that affect your taxable profit, and submit your Company Tax Return to HMRC on your behalf. If you would rather spend your time running the business than working through tax legislation, get in touch and let us look after the numbers and the filing.

─── 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 is where a company reports its Corporation Tax position for an accounting period, including the figures behind its taxable profit and the resulting Corporation Tax liability or repayment position, along with the supporting information HMRC requires. It is submitted to HMRC, not to Companies House, and it forms part of the company's Corporation Tax filing obligations.

Who needs to file a CT600?

Whether a company needs to file a Company Tax Return depends on its circumstances. In general, a company that is within the charge to Corporation Tax will need to notify HMRC and, where required, submit a CT600 for each accounting period. Some companies that are dormant or inactive may not need to file a return, but it is important to confirm the position rather than assume. Because the rules depend on the company's own activity and status, it is worth checking your specific situation — and most companies ask their accountant to prepare and file the CT600 on their behalf using the company's records and authority to act.

Is a CT600 different from statutory accounts?

Yes, they are two separate filings with two separate purposes. Statutory accounts are prepared for the company's members and filed at Companies House under company law, showing the financial position and performance for the period. A CT600 is a tax filing submitted to HMRC, reporting the Corporation Tax position. The accounts often provide the starting point for the tax figures, but the CT600 itself is not the same document and it is not filed with the same authority. Many companies also have other separate obligations, such as a Confirmation Statement or VAT Returns, which are unconnected to the CT600.

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

Being a micro-entity affects how you may prepare and file your statutory accounts; it does not create a special tax return and it does not automatically remove Corporation Tax obligations. If HMRC requires your company to submit a Company Tax Return for an accounting period, you will need to file a CT600 for that period, whatever your size. Similarly, the accounting framework used for the accounts — such as FRS 105 — does not by itself determine the Corporation Tax liability. Whether Corporation Tax is actually payable depends on the company's taxable profit and its individual circumstances.

Is a CT600 different from a Corporation Tax computation?

They are closely connected but not the same thing. The Corporation Tax computation is the working document that takes your accounting profit, applies the relevant tax adjustments, and arrives at the taxable profit and the Corporation Tax figure. The CT600 is the form on which those results are reported and submitted to HMRC. In practice they are prepared together, which is why an accurate computation matters: if the underlying figures are wrong or unsupported, the return built on them will be too.

How is taxable profit calculated from accounting profit?

Taxable profit starts with the profit shown in your accounts and is then adjusted for tax purposes. Typical adjustments include adding back expenditure that is not allowable for tax, deducting items that are treated differently for tax, and accounting for capital allowances rather than accounting depreciation on qualifying assets. Income that is treated differently under tax rules may also need to be reflected. The result is the taxable profit used to work out Corporation Tax. Because these adjustments depend on the company's specific transactions and records, the computation should be prepared carefully and supported by the underlying paperwork.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the CT600 is the reporting step — it tells HMRC what the company's Corporation Tax position is for the period. Paying Corporation Tax is a separate obligation, and the date by which payment is due can differ from the date the return is submitted. A company can therefore have filed its return while still owing Corporation Tax, or it may file to confirm a nil or repayment position. It is worth keeping both dates in view so that neither is missed.

What happens if a company files its CT600 late?

If a Company Tax Return is filed after the date HMRC expects it, the company may face penalties and, where tax is outstanding, interest on late payment. The exact consequences depend on how late the return is, whether any tax was paid on time, and the company's history, so the position is best confirmed against current HMRC guidance for your circumstances. The practical priority is to get the return completed and submitted as soon as possible, with accurate figures, and to bring any outstanding records up to date.