─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Irvine — 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, reporting the company’s Corporation Tax position for an accounting period. If your company is based in Irvine or anywhere across the UK, professional support can help you pull the relevant figures together from your accounting records, review the tax adjustments needed to arrive at taxable profit, and submit an accurate CT600 within the applicable HMRC timeframe. It is important to understand that the CT600 is a separate filing from your statutory accounts, which are prepared under an accounting framework and filed with Companies House. The two processes are related — the accounts and records often form the starting point for the Corporation Tax computation — but they serve different purposes and go to different bodies. Working with an experienced team means your CT600 Tax Return Filing is handled methodically, your Corporation Tax records stay organised, and you have a clear point of contact if HMRC raises questions about the return.

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  
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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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 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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 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 Does the CT600 Mean for a Micro-Entity Company?

There is no separate official “micro-entity CT600” form. The CT600 is the standard Company Tax Return used to report a company’s Corporation Tax position to HMRC, and a company that qualifies and chooses to prepare its accounts as a micro-entity may still need to complete and submit one. Being a micro-entity affects how your statutory accounts are prepared and what is filed at Companies House — it does not, by itself, remove a Corporation Tax filing obligation, and it does not automatically determine how much Corporation Tax is due. Where a Company Tax Return is required, the figures in your accounting records and accounts usually feed into the Corporation Tax computation, but they are rarely the final answer. Taxable profit can differ from accounting profit because the calculation may require adjustments, for example to add back disallowable expenditure, account for capital allowances, or treat certain income differently for tax purposes. Similarly, submitting a CT600 and paying any Corporation Tax due are separate obligations: filing the return reports the position, while payment is handled through HMRC’s payment arrangements. Whether a micro-entity company owes Corporation Tax, and how much, depends on its own circumstances and taxable position, so it is worth reviewing each accounting period on its own facts.

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

Preparing a Company Tax Return can quickly become complicated — reconciling your accounts to taxable profit, identifying the right tax adjustments, keeping Corporation Tax records in order, and making sure the CT600 itself is complete before it reaches HMRC. That is where Micro Entity Accounts can help. We support companies in Irvine and across the UK with CT600 preparation, Corporation Tax computation work, review of the adjustments between accounting profit and taxable profit, and submission of the Company Tax Return to HMRC, so you can get on with running the business. If you would like your CT600 Tax Return Filing handled accurately and with clear, transparent pricing, get in touch with our team to discuss your company’s accounting period and next steps.

─── 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?

The CT600 is the form HMRC uses for a Company Tax Return. It is the mechanism through which a company reports its Corporation Tax position for an accounting period, including the figures from its Corporation Tax computation and the resulting tax liability, and it is submitted electronically to HMRC. The CT600 is a tax filing, not an accounting document, and it is separate from any accounts filed at Companies House.

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, or if the company has Corporation Tax obligations for the period. That can include companies that are dormant for Corporation Tax purposes only in certain circumstances, and companies that are trading but whose taxable profit results in no tax being payable. Whether your particular company must file depends on its circumstances and on any notice received, so it is worth confirming your position rather than assuming.

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

Yes, they are two distinct filings. Statutory accounts are prepared under an accounting framework and, depending on the company's size and circumstances, filed at Companies House. A CT600 is submitted to HMRC to report the company's Corporation Tax position. The accounts often provide the starting figures for the Corporation Tax computation, but the two documents serve different purposes and are filed with different bodies, on different timescales.

Is a CT600 the same as a Corporation Tax computation?

No. The Corporation Tax computation is the working document that starts with accounting profit and applies the relevant tax adjustments to arrive at taxable profit and the Corporation Tax due. The CT600 is the return that reports those outcomes to HMRC. In practice, the computation sits behind the return and supports the figures entered on it, which is why accurate computation work matters as much as the filing itself.

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

Possibly — it depends on the company's circumstances, not simply on its size or accounting framework. Preparing micro-entity accounts under a framework such as FRS 105 is an accounting decision; it does not by itself settle whether a Company Tax Return is required or what the Corporation Tax outcome will be. If HMRC has issued a notice to deliver a return, or the company has Corporation Tax obligations, a CT600 may be needed. Not every micro-entity will owe Corporation Tax, and filing a return is not the same as making a payment.

Can a company file its CT600 without filing its accounts?

The accounts and the tax return are separate obligations with separate recipients, so the filing processes are not interchangeable. However, the CT600 relies on figures derived from the company's accounting records and computation, so the accounts normally need to be prepared — and, where required, filed at Companies House — as part of getting the tax position right. Trying to file a return without properly prepared accounts tends to create avoidable risk of errors and follow-up queries.

How is taxable profit calculated from accounting profit?

Taxable profit starts with the profit shown in the accounts but is not necessarily the same figure. The Corporation Tax computation may add back expenditure that is not allowable for tax, deduct or adjust for items treated differently for tax purposes, and account for reliefs such as capital allowances in place of depreciation. The result is the taxable profit on which Corporation Tax is calculated. The adjustments required vary from company to company, which is why the computation is prepared on the facts of each period.

Is filing a CT600 the same as paying Corporation Tax?

No — filing and payment are separate obligations. Submitting the CT600 reports the company's position and the tax due, while payment must be made to HMRC through the appropriate payment channel. It is possible to have filed a return and still owe tax, just as it is possible for a filed return to show no Corporation Tax payable. Keeping the two in view helps avoid unnecessary correspondence.