─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Kingston upon Thames: 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. If your company is based in Kingston upon Thames, professional support with CT600 Tax Return Filing can help you pull together the figures from your accounting records, review the tax adjustments needed to move from accounting profit to taxable profit, and submit the completed return to HMRC through the appropriate channel. It is important to understand that the CT600 is not the same as the statutory accounts you file with Companies House. Statutory accounts are a separate filing obligation and go to a different authority, even though the accounting figures behind them often feed into the Corporation Tax computation. Good CT600 Tax Return Filing brings accuracy, a clear audit trail and a welcome reduction in administrative pressure, so you can get on with running the business while the return is prepared correctly.

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.

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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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   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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 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 Is a Micro-Entity CT600? How CT600 Tax Return Filing Works for Smaller Companies

There is no separate official “micro-entity CT600” form. A CT600 is simply the Company Tax Return that companies use to report their Corporation Tax position to HMRC, and micro-entity companies use exactly the same return as any other company. What differs is the wider context: a micro-entity may prepare its statutory accounts under a simplified accounting framework, and those simpler accounts can still form the starting point for the tax calculation. Where a company has Corporation Tax obligations and HMRC has asked for a return, or the company otherwise needs to file one, a Company Tax Return (CT600) must be submitted to HMRC. This is a separate process from filing statutory accounts with Companies House, and it is also separate from paying any Corporation Tax that is due — filing and payment are distinct obligations with their own timelines. Expect the taxable profit shown in the return to differ from the accounting profit in the accounts, because the Corporation Tax computation can require adjustments: disallowable expenses may be added back, allowable deductions and reliefs may be claimed, and capital items may be treated under the capital allowances rules rather than as ordinary business costs. Not every micro-entity will owe Corporation Tax — whether any is payable depends on the company’s own circumstances and taxable position — but the reporting and record-keeping work still needs to be done properly. Accounting framework choices do not by themselves determine a company’s Corporation Tax liability; the tax computation does.

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 Take the Strain Out of Your CT600 Tax Return Filing

Preparing a Company Tax Return can quickly become complicated once you start adjusting your accounting profit for tax, tracking down allowable deductions and making sure nothing has been missed. Micro Entity Accounts is here to make that process straightforward for companies in Kingston upon Thames and beyond. We can handle CT600 preparation, build the Corporation Tax computation from your accounting records, review the tax adjustments needed to arrive at taxable profit, and manage the submission of your Corporation Tax Return to HMRC. Alongside that, we can help you keep your Corporation Tax records organised so the next filing is easier than the last. If you would rather spend your time on the business than on the tax return, get in touch and let us prepare and file your CT600.

─── 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 company submits to HMRC to report its Corporation Tax position for an accounting period. It sets out the company's taxable profit, the Corporation Tax calculated on it, and any reliefs or deductions being claimed. In practice, a CT600 is usually submitted electronically along with a Corporation Tax computation and, in many cases, a copy of the statutory accounts. It is a tax filing, not an accounts filing, and it is submitted to HMRC rather than to Companies House.

Is a CT600 the same as a Company Tax Return?

Yes. CT600 is simply the name of the form used for a Company Tax Return, so the two terms refer to the same filing. You will also hear it described as a Corporation Tax Return or Corporation Tax filing. Whichever term is used, the purpose is the same: reporting the company's taxable profit and Corporation Tax liability for an accounting period to HMRC. For our purposes, CT600 Tax Return Filing covers preparing that return, working out the figures behind it and submitting it to HMRC.

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

They are two distinct filings with two different authorities. Statutory accounts are prepared for Companies House and for the company's members, and they follow the applicable accounting framework. A CT600 is prepared for HMRC and reports the company's Corporation Tax position. The figures overlap, because the accounts are usually the starting point for the tax calculation, but the CT600 is not a copy of the accounts. It also includes tax-specific information such as adjustments to accounting profit and claims for reliefs, so the two documents can look quite different even when they describe the same year.

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

Some micro-entity companies do need to file a Company Tax Return, and others do not, depending on their circumstances and whether HMRC has issued a notice to file. There is no separate micro-entity version of the CT600 — the same return applies. It is also worth remembering that using simplified accounting rules for the statutory accounts does not automatically decide the Corporation Tax outcome; the tax computation does that. If you are unsure whether a return is required for your company, it is worth checking your position rather than assuming either way.

How is a CT600 different from a Corporation Tax computation?

The Corporation Tax computation is the working paper that takes your accounting profit and adjusts it to arrive at taxable profit. It deals with items such as expenses that are not allowable for tax, allowable deductions, and capital items handled under the capital allowances rules rather than as ordinary business costs. The CT600 is the return form itself, which reports the results of that computation to HMRC along with the Corporation Tax due. In short, the computation is the calculation and the CT600 is the filing. Both need to be prepared carefully, and the figures on the return should be supported by the computation.

How is taxable profit calculated from accounting profit?

Taxable profit starts with the profit shown in your accounts and is then adjusted for tax purposes. Typical adjustments include adding back expenditure that is not allowable for Corporation Tax, deducting items that are allowable but were not treated as expenses in the accounts, and replacing the accounting treatment of capital purchases with capital allowances. Other reliefs and deductions may also apply depending on the company's activities. Because these adjustments depend on the individual company's transactions, taxable profit often differs from accounting profit — and it is the taxable profit figure that drives the Corporation Tax liability reported on the CT600.

Is filing a CT600 the same as paying Corporation Tax?

No, they are separate obligations. Filing the CT600 is about reporting your company's taxable profit and Corporation Tax position to HMRC. Paying Corporation Tax is about settling the liability that arises from that calculation, and the payment deadline is not necessarily the same as the filing deadline. A company can submit its return on time and still have a payment obligation with its own due date, and in some cases there may be no Corporation Tax to pay at all while a return is still required. Keeping the two obligations distinct in your diary helps avoid unnecessary problems.

What happens if a company files its CT600 late?

If a Company Tax Return is filed after the due date, HMRC can apply penalties and may also charge interest on any Corporation Tax paid late. The amount depends on how late the return is and on the company's circumstances, and HMRC publishes the details of how penalties are calculated. Separately, filing a return that is incomplete or inaccurate can lead to HMRC asking questions or amending the return. The safest approach is to start the CT600 Tax Return Filing process early, with your accounting records and tax adjustments in order well ahead of the deadline.