─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Kilwinning — Prepare and File Your Company Tax Return with HMRC

If your company has been issued with a notice to deliver a Company Tax Return, professional CT600 Tax Return Filing in Kilwinning helps you report your Corporation Tax position accurately and submit the CT600 to HMRC with confidence. We work through your accounting records, review the figures that feed into your Corporation Tax computation, and handle the filing itself, so the numbers reported to HMRC reflect your company’s actual trading position rather than a rushed estimate. It is important to remember that the CT600 is not the same thing as your statutory accounts: the CT600 is a tax return submitted to HMRC, while statutory accounts are filed separately with Companies House. Our role is to keep the two clearly separated, explain what is needed from you, and manage the filing process efficiently. The result is accurate Corporation Tax reporting, clearer record keeping, and less of the administrative burden falling on you. We offer clear, transparent pricing so you know what you are paying for before 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 300 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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 .
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   3rd Hub 
 
 
 
 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.
  
 
      Posted on Google  
   
   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.
  
 
      Posted on Google  
   
   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 Is a Micro-Entity CT600? How Company Tax Returns Work for Smaller Companies

There is no separate, official “micro-entity CT600” form. A CT600 is simply the name of the Company Tax Return that a UK company submits to HMRC, and it is the same form used regardless of how large or small the company is. What varies is the level of detail a company needs to report and the accounting framework it applies. If your company qualifies as a micro-entity, that affects how your statutory accounts are prepared and filed with Companies House — for example, under a simplified framework such as FRS 105 — but it does not remove your Corporation Tax obligations. Where HMRC requires a return, a micro-entity company may still need to submit a CT600, and the figures from its accounting records and accounts are typically used as the starting point for the Corporation Tax calculation. It is worth being clear that not every micro-entity will owe Corporation Tax; whether tax is payable depends on the company’s own taxable position and circumstances. Equally, preparing accounts under a micro-entity framework does not automatically determine the tax liability. Taxable profit can differ from accounting profit because the Corporation Tax computation may require adjustments — for instance, disallowable expenses or different treatment of certain items — before the taxable profit and any Corporation Tax due are established. Filing the CT600 and paying any Corporation Tax are also separate obligations: one is a reporting duty to HMRC, the other is the payment itself, and both need to be managed on their own terms.

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 in Kilwinning

Preparing a Company Tax Return can quickly become complicated once you start working through tax adjustments, disallowable expenses, capital allowances and the difference between accounting profit and taxable profit — and all of it has to be presented to HMRC in a form that stands up to scrutiny. Micro Entity Accounts works with companies in Kilwinning and across the UK to take that burden off your desk. We can help with CT600 preparation, building the Corporation Tax computation from your accounts, reviewing the tax adjustments required, and submitting your Company Tax Return to HMRC on your behalf. We will also help you keep your Corporation Tax records organised so that nothing is left to guesswork at the last minute. Whether you are filing for the first time or simply want a second pair of eyes on the numbers, get in touch with Micro Entity Accounts to discuss your CT600 Tax Return Filing — we will explain exactly what is involved and what we need from you.

─── 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 formal Company Tax Return that a UK company files with HMRC to report its Corporation Tax position for an accounting period. It sets out the company's income, allowable deductions, taxable profit and the resulting Corporation Tax calculation, along with supporting information HMRC expects to see. The CT600 is submitted electronically to HMRC and is a tax document — it is not the same as the statutory accounts a company files at Companies House, even though the two are closely related in terms of the underlying figures.

Who needs to file a CT600?

A company generally needs to file a Company Tax Return when HMRC has issued it with a notice to deliver one. That notice is what triggers the obligation, rather than the company simply making a profit or having Corporation Tax to pay. Because the requirement depends on whether HMRC has issued a notice and on the company's own circumstances, it is worth checking your position rather than assuming either way. Dormant or non-trading companies can also fall within the filing requirements in certain situations, so the safest approach is to confirm what has been issued to your company before deciding whether a return is expected.

Is a CT600 different from statutory accounts?

Yes — they are two separate filings with two different bodies. Statutory accounts are prepared under an accounting framework and filed at Companies House, and they focus on presenting the company's financial position and performance. A CT600 is a tax return submitted to HMRC that reports the company's Corporation Tax position. The accounts often provide the starting point for the tax calculation, but they are not a substitute for the return, and filing one does not satisfy the other. In practice, most companies need to deal with both obligations, although the content and purpose of each document are distinct.

Is a CT600 different from a Corporation Tax computation?

They are related but not the same thing. The Corporation Tax computation is the working calculation that starts with the company's accounting profit and adjusts it to arrive at taxable profit — for example by adding back disallowable expenditure or applying capital allowances. The CT600 is the return itself, in which the results of that computation and the resulting Corporation Tax position are reported to HMRC. In other words, the computation is the calculation behind the numbers, while the CT600 is the document that reports them.

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

Possibly, depending on the company's circumstances. Being a micro-entity affects how your statutory accounts are prepared and what they are required to disclose, but it does not create a separate or simplified tax return for HMRC purposes. If HMRC has issued your company with a notice to deliver a Company Tax Return, a return will normally be required, and the company's accounting records and accounts will usually be used as the basis for the Corporation Tax calculation. Whether any Corporation Tax is actually payable is a separate question that depends on the company's taxable profit and its own tax position.

How is taxable profit calculated, and why can it differ from accounting profit?

Taxable profit starts with the profit shown in your accounts and is then adjusted through the Corporation Tax computation. Some expenses that reduce accounting profit are not allowable for tax and must be added back, while other items — such as capital allowances instead of depreciation — may be deducted. Income treated in a particular way in the accounts may also be taxed differently. The result is that taxable profit can be higher or lower than accounting profit, which is why reviewing the adjustments carefully matters. A company's accounting framework does not by itself determine the tax liability; the computation is what establishes the taxable figure.

Is filing a CT600 the same as paying Corporation Tax?

No — they are separate obligations. Filing the CT600 is a reporting duty: it tells HMRC what the company's taxable profit and Corporation Tax liability are for the period. Paying Corporation Tax is the settlement of whatever liability the computation shows to be due. Submitting the return does not automatically settle the tax, and payment does not replace the need to file. Companies need to manage both, which is why it is helpful to know your Corporation Tax position early rather than only at the point the return is due.

Can someone prepare and file a CT600 on a company's behalf?

Yes. A company can appoint an agent, such as an accountant or tax adviser, to prepare the Corporation Tax computation and file the CT600 with HMRC on its behalf. This is common practice, particularly where there are tax adjustments, capital allowances or multiple income streams to work through. The company remains responsible for the accuracy of what is submitted, so any professional preparing the return will need complete and timely information — bank records, sales and expense detail, payroll information and asset purchases — to build a reliable computation and keep the filing process on track.