─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Surbiton: 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 Surbiton-based service helps limited companies pull together the figures from their accounting records, review the tax adjustments that may be needed, and submit a complete CT600 to HMRC with confidence. It is important to understand that the CT600 is not the same as the statutory accounts you file with Companies House — the accounts and the Company Tax Return are separate obligations, even though they draw on much of the same information. Professional support means fewer loose ends, clearer records, and a filing process that fits around running your business, with clear, transparent pricing and no jargon.

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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 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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 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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 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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 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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 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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 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 Does the CT600 Mean for Micro-Entity Companies?

There is no separate official “micro-entity CT600”. The CT600 is simply the standard Company Tax Return form used to report a company’s Corporation Tax position to HMRC, and it applies to companies of all sizes — including those that meet the conditions to be treated as micro-entities for accounts purposes. A micro-entity company can still have Corporation Tax obligations, and where HMRC requires a Company Tax Return, one needs to be prepared and submitted. The CT600 is separate from the statutory accounts filed with Companies House, although the figures in those accounts, along with the underlying accounting records, usually form the starting point for the Corporation Tax calculation. From there, adjustments may be required, which means the company’s taxable profit can differ from the accounting profit shown in its accounts. Whether any Corporation Tax is actually payable depends on the company’s individual circumstances and taxable position — not every micro-entity will owe Corporation Tax. It is also worth noting that filing the CT600 and paying any Corporation Tax due are separate obligations with separate processes, so submitting the return does not in itself settle a 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.

Take the Fuss Out of CT600 Tax Return Filing in Surbiton

Preparing a Company Tax Return can quickly become complicated: pulling together the right figures, working through the tax adjustments that turn accounting profit into taxable profit, and keeping Corporation Tax records organised alongside everything else you file. Micro Entity Accounts helps Surbiton companies work through exactly that — from CT600 preparation and Corporation Tax computation to a review of the tax adjustments and submission of the return to HMRC. If you would rather spend your time on the business than on the paperwork, get in touch and we can talk through your CT600 Tax Return Filing requirements.

─── 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 sets out a company's Corporation Tax position for an accounting period, including the company's income, allowable deductions and the resulting Corporation Tax liability, along with other information HMRC requires such as the company's details and the accounting period covered. The CT600 is submitted to HMRC — not to Companies House — and it is normally filed alongside or supported by a Corporation Tax computation and a copy of the statutory accounts.

Who needs to file a CT600?

A company generally needs to file a Company Tax Return if HMRC has issued a notice to deliver one, and there are also circumstances in which a return is required even without a notice, such as when a company has Corporation Tax to pay or has received certain income. Whether a specific company must file for a given period depends on its own circumstances and tax position, so it is worth checking rather than assuming. If you are unsure whether a CT600 is required for your company, we can review your position and confirm what needs to be done.

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

Yes — they are two separate filings with two separate bodies. Statutory accounts are prepared under an accounting framework and filed with Companies House as part of the company's public reporting obligations. A CT600 is a tax return submitted to HMRC to report the company's Corporation Tax position. The accounts often provide the starting figures for the tax return, but they are not a substitute for it, and filing your accounts does not mean you have filed your Company Tax Return.

Is a CT600 different from a Corporation Tax computation?

They are related but not the same thing. The Corporation Tax computation is the working document that starts with the company's accounting profit, applies the relevant tax adjustments — such as disallowable expenses, capital allowances and other reliefs — and arrives at the taxable profit and the Corporation Tax figure. The CT600 is the return itself, which reports those results to HMRC. In practice the computation is usually prepared first and then used to complete the CT600, and both are generally submitted together.

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

Possibly, depending on its circumstances. Operating as a micro-entity affects how the company's accounts are prepared and what it files with Companies House — it does not remove Corporation Tax obligations or create a special version of the CT600. If HMRC requires a Company Tax Return, the company needs to prepare and submit one. Equally, being a micro-entity does not automatically mean Corporation Tax is payable; that depends on the company's taxable position for the period.

What information is needed to prepare a CT600 Tax Return Filing?

At a minimum, we usually need the company's accounting records and a set of accounts or draft accounts for the period, details of income and expenses, records of any fixed assets purchased or sold, information on any other income received, and confirmation of the accounting period being reported. It also helps to have details of any prior-period losses, earlier returns, and any HMRC correspondence. Having these organised in advance makes the CT600 Tax Return Filing process quicker and reduces the chance of queries later.

How is taxable profit calculated from accounting profit?

Taxable profit starts with the accounting profit shown in the company's accounts, but it is rarely the final figure. Adjustments are normally needed — for example, adding back expenses that are not allowable for tax, deducting capital allowances instead of depreciation, and accounting for any other reliefs or adjustments that apply. The result is the taxable profit used to determine the Corporation Tax liability. Because these adjustments depend on the company's specific transactions, the taxable profit can be higher or lower than the accounting profit.

Is filing a CT600 the same as paying Corporation Tax?

No — they are separate obligations. Filing the CT600 is about reporting the company's Corporation Tax position to HMRC; payment is about actually settling any liability that arises from that position. A company might file its return and have no tax to pay, or it might have a liability that is due under separate payment rules. It is important to keep track of both, as meeting the filing requirement does not automatically take care of any payment that is due.