─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Kilmarnock — Company Tax Return Preparation and HMRC Submission

Every UK company that HMRC requires to file a Company Tax Return needs a CT600 prepared and submitted, supported by a Corporation Tax computation that explains how the figures were reached. Our CT600 Tax Return Filing service in Kilmarnock is built around exactly that: we work through your accounting records, review the numbers for the tax adjustments that may be needed, set out the resulting taxable profit and Corporation Tax position, and file the return with HMRC. It is worth being clear about one thing from the outset — a CT600 is not the same as the statutory accounts filed with Companies House. They are separate obligations with separate audiences, and filing one does not discharge the other. We help you keep both in order, explain what is being reported and why, and take the administrative weight off your desk so you can get on with running the business. Whether your company has straightforward, single-director affairs or something more involved, the aim is the same: accurate figures, a properly prepared Company Tax Return, and a filing process you can actually follow.

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.
  
 
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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 .
  
 
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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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   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.
  
 
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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.
  
 
      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 CT600 Tax Return for a Micro-Entity Company?

There is no separate micro-entity CT600. There is one Company Tax Return — the CT600 — used by companies generally, whatever their size, including companies that prepare their statutory accounts under a micro-entity accounting framework. What changes with size is the level of detail in the accounts and the complexity of the tax work standing behind the return, not the form itself. Where HMRC requires your company to file a Company Tax Return, you will complete a CT600 reporting the company’s income, deductions and resulting Corporation Tax position. The accounts you prepare feed into the Corporation Tax computation, but they do not by themselves determine the tax liability. Taxable profit can be different from accounting profit, because the computation may need adjustments — for example for expenses that are not allowable for tax, capital allowances, non-taxable income, or timing differences. Not every micro-entity will owe Corporation Tax; whether anything is payable depends on the company’s own taxable position and circumstances. It is also important to separate the two obligations: submitting the CT600 to HMRC and paying any Corporation Tax that falls due are distinct, each with its own timing. Our CT600 Tax Return Filing service supports companies in Kilmarnock and further afield, and we are always happy to explain how the process applies to your particular company.

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 the CT600 Tax Return Filing — So Your Corporation Tax Reporting Is Done Properly

Preparing a Company Tax Return can feel like a lot when you are also trying to run the business — untangling disallowable expenses, dealing with capital allowances, reconciling accounting profit to taxable profit, and making sure every figure ties back to your records. That is the part we take on. Micro Entity Accounts prepares the CT600, builds the Corporation Tax computation, reviews the tax adjustments with you so you understand what has changed and why, and submits the Company Tax Return to HMRC on your behalf. If you would like clear, transparent pricing and a straight answer on what your company actually needs to file, get in touch with our team and we will take it from there.

─── 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 used to submit a Company Tax Return to HMRC. It reports the company's income, deductions and resulting Corporation Tax position for the accounting period, and it is normally filed alongside a Corporation Tax computation and a copy of the statutory accounts. It is a return to HMRC, not an accounts filing to Companies House, so it sits alongside your other filing obligations rather than replacing any of them.

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

Yes, they are separate obligations. Statutory accounts are prepared under an accounting framework and filed with Companies House; the CT600 is filed with HMRC. The two draw on the same underlying records, and the accounts figures usually form the starting point for the tax computation, but they serve different purposes, are prepared under different rules in places, and follow their own filing arrangements. Completing one does not satisfy the other.

Is a CT600 different from a Corporation Tax computation?

They are connected but not the same thing. The computation is the working document that begins with your accounting profit, applies the tax adjustments required, and arrives at the taxable profit and the Corporation Tax figure. The CT600 is the return form on which those results are reported to HMRC. You need the computation in order to complete the CT600 accurately, but the calculation and the return itself are prepared as separate pieces of work.

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

It depends on whether HMRC requires your company to file a Company Tax Return. There is no separate micro-entity CT600 form — a company that is required to file uses the standard CT600, and many smaller companies find the process relatively straightforward. The size of the company affects how the statutory accounts are prepared, not which tax return form is used. If you are unsure whether your company has been asked to file, we can check the position for you.

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

Typically we would need the company's accounting records and draft or final accounts, details of income and expenses, fixed asset and capital allowance information, any brought-forward losses, details of loans or other transactions that may need reporting, and the company's registration details for HMRC. Gaps and loose ends in the records are common in practice, and working through them is part of what we do — you do not need everything perfectly tidy before speaking to us.

How is taxable profit calculated from accounting profit?

The starting point is usually the accounting profit shown in the accounts. From there the computation adds back expenses that are not allowable for tax, deducts items that are not taxable or that qualify for relief, replaces depreciation with capital allowances, and reflects any other adjustments relevant to the company's circumstances. The end result is the taxable profit on which Corporation Tax is calculated, and it will often differ from the accounting profit reported in the accounts.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the return is how the company reports its position to HMRC; paying Corporation Tax is a separate obligation, and the payment can fall due at a different point from the filing. Completing the CT600 will normally establish what is owed, but submitting the return does not itself settle the liability — the two need to be tracked independently.

Can someone prepare and file a CT600 on behalf of a company?

Yes. A company can appoint an agent to prepare and file its Company Tax Return, and we do exactly that as part of our CT600 Tax Return Filing service for companies in Kilmarnock and beyond. You remain responsible for the accuracy of the information supplied and for making sure any tax is paid, but the preparation, the Corporation Tax computation and the HMRC submission can all be handled on your behalf.