─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Theale: 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 is reported accurately. For companies based in Theale, professional support with CT600 Tax Return Filing means the figures behind your tax return are checked, the tax adjustments that bridge accounting profit to taxable profit are considered, and the return is filed with HMRC in the right format at the right time. It is important to be clear that a CT600 is not the same as statutory accounts filed with Companies House. Statutory accounts are a separate filing obligation prepared under an applicable accounting framework, while the CT600 reports the company’s Corporation Tax position to HMRC. Many companies also file a Confirmation Statement and, where registered, VAT Returns — each of these is a distinct requirement with its own purpose. Our role is to take the administrative weight off your shoulders, work through your records, explain what is needed in plain English, and give you a clear, transparent view of the cost of CT600 Tax Return Filing before any work begins.

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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 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. 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.

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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 a CT600 Mean for a Micro-Entity Company?

There is no separate official form known as a micro-entity CT600. The CT600 is HMRC’s Company Tax Return, and it is used by companies generally — including those that meet the size criteria to be treated as micro-entities for accounts purposes. Being a micro-entity affects how your statutory accounts are prepared and the accounting framework you may choose to adopt, but it does not remove the need to consider Corporation Tax. Where HMRC requires a Company Tax Return to be filed, a micro-entity company must submit a CT600 covering the relevant accounting period. The CT600 is separate from the statutory accounts: the accounts are filed with Companies House, while the Company Tax Return goes to HMRC. That said, the two are connected, because the figures in your accounting records and accounts are usually the starting point for the Corporation Tax calculation. Accounting profit is not automatically the same as taxable profit. The Corporation Tax computation may require adjustments — for example, adding back disallowable expenditure or claiming allowable deductions and reliefs — before taxable profit and any resulting Corporation Tax liability are established. Equally, filing the CT600 and paying any Corporation Tax due are separate obligations; a return may be filed even where no tax is payable, depending on the company’s 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.

Take the Pressure Out of CT600 Tax Return Filing

Preparing a Company Tax Return can quickly become complicated once you move from your bookkeeping figures to the tax adjustments that shape taxable profit, and it is easy to lose track of what HMRC expects and when. Micro Entity Accounts works with companies in Theale and the surrounding area to make CT600 Tax Return Filing straightforward, covering CT600 preparation, the Corporation Tax computation, a review of the adjustments linking accounting profit to taxable profit, and submission of the return to HMRC. We keep the process organised, ask for what we need in a clear sequence, and explain each stage in plain English so you always know where things stand. Whether you are filing for the first time, catching up on an outstanding return, or simply want your Corporation Tax reporting handled properly, get in touch and let us take it from here.

─── 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 name of the form HMRC uses for a Company Tax Return. It is the formal way a company reports its Corporation Tax position for an accounting period, setting out details such as the period covered, the company's income and expenditure as they relate to tax, and the resulting tax position. It is submitted to HMRC, not to Companies House, and it sits alongside — rather than replaces — the statutory accounts a company files separately.

Who needs to file a CT600?

A company needs to file a Company Tax Return where HMRC has issued a notice to deliver one, or where a return is otherwise required for that accounting period. This applies to limited companies and other bodies within the scope of Corporation Tax, and it is not limited to companies that expect to pay tax. Because the obligation depends on the company's specific circumstances — including whether it is active, dormant, or newly incorporated — it is worth checking your position rather than assuming a return is or is not required. If you are unsure whether a CT600 is due, we can review your situation and confirm what needs to be done.

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

Yes, and the distinction matters. Statutory accounts are prepared under an applicable accounting framework and filed with Companies House as part of the public record. The CT600 is a tax return filed with HMRC. The two are prepared for different purposes, go to different bodies, and are subject to different rules. In practice, the accounts and accounting records usually provide the starting figures for the Corporation Tax work, but the CT600 itself is not a copy of the accounts, and filing accounts does not discharge any CT600 obligation.

Is a CT600 the same as a Corporation Tax computation?

No. The Corporation Tax computation is the working paper that starts with accounting profit and applies the adjustments needed to arrive at taxable profit — for example, adding back expenditure that is not allowable for tax and deducting items that are. The CT600 is the return form on which the resulting figures and the company's tax position are reported to HMRC. In practice the two are prepared together, because the figures on the CT600 need to be supported by a computation that explains how they were arrived at.

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

Possibly, depending on its circumstances. A company that meets the size criteria for micro-entity treatment still has Corporation Tax obligations where HMRC requires a Company Tax Return to be delivered. Being a micro-entity affects the accounting framework and the way the statutory accounts are prepared; it does not create a separate or simplified HMRC tax return. Importantly, a micro-entity company is not automatically liable to pay Corporation Tax — whether tax is payable depends on its taxable position. Filing the return and paying any tax due are separate steps.

Can a CT600 be filed without the statutory accounts being filed?

The two filings are separate obligations, and one does not depend on the other being completed first. Statutory accounts go to Companies House, while the CT600 goes to HMRC. That said, the accounting figures usually feed into the Corporation Tax calculation, so in practice the accounts are often finalised or substantially prepared before the CT600 is completed. If your accounts are not yet ready, we can still advise on the sequencing and what information is needed to move both filings forward.

How is taxable profit calculated from accounting profit?

Taxable profit is not simply the profit shown in the accounts. The Corporation Tax computation begins with accounting profit and then applies tax adjustments. These can include adding back expenditure that is not allowable for tax purposes, deducting items that are allowable but treated differently in the accounts, and reflecting available reliefs and allowances where the conditions are met. Capital items may be dealt with differently from revenue items, and income recognised in the accounts may not always be taxable in the same period. The exact adjustments depend on the company's activities and transactions, which is why a considered review of the figures matters.

Is filing a CT600 the same as paying Corporation Tax?

No — they are two distinct obligations. Submitting the CT600 is about reporting the company's Corporation Tax position to HMRC. Paying Corporation Tax is about settling any liability that arises. A company can file a return where no tax is payable, and equally, the date by which tax must be paid is not the same concept as the filing of the return. Keeping records organised throughout the year makes both easier, and it helps to know well in advance what the likely position will be rather than discovering it at the point of filing.