─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Ullapool — Prepare and Submit Your Company Tax Return to HMRC

CT600 Tax Return Filing is about getting your company’s Corporation Tax position properly prepared and reported to HMRC. It starts with your accounting records and year-end figures, then moves through the tax adjustments that turn accounting profit into taxable profit, before the resulting figures are entered into the CT600 and submitted as your Company Tax Return. This is a separate exercise from the statutory accounts you file with Companies House, even though both draw on the same underlying bookkeeping. For company directors in Ullapool and across the surrounding area, professional support with CT600 Tax Return Filing means the numbers are checked carefully, the computation is set out clearly, and the return is submitted to HMRC without you having to wrestle with the form yourself. We work with limited companies of all sizes, including small and micro-entity companies that may have simpler accounts but still face genuine Corporation Tax reporting questions.

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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   Ayotunde Rufai 
 
 
 
 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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   Zest For Life 
 
 
 
 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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   Hansen Personal Training 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have been a client for years - very quick responsive and personalised service
  
 
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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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   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 .

What Is a Micro-Entity CT600 and How Does It Relate to Your Company Tax Return?

There is no separate official form called a “micro-entity CT600” — all UK limited companies use the same CT600 to report their Corporation Tax position to HMRC. The distinction that matters is not the form but the company’s size and circumstances. A company that qualifies as a micro-entity under the relevant accounting thresholds may prepare simpler statutory accounts, often under FRS 105, but that accounting framework does not by itself determine what Corporation Tax is due. Where HMRC requires a Company Tax Return, the company still needs to submit a CT600, and the figures used in it come from the company’s accounting records, adjusted where necessary. Accounting profit is not automatically the same as taxable profit: the Corporation Tax computation may add back disallowable expenditure, adjust for capital allowances instead of depreciation, and account for other timing or relief differences. Once those adjustments are made, the taxable profit and any resulting Corporation Tax liability can be determined. It is also worth being clear that not every micro-entity will owe Corporation Tax — that depends on the company’s own taxable position and circumstances — and that filing the CT600 and paying any Corporation Tax due are two separate obligations with separate timelines. Preparing the accounts and completing the CT600 are related but distinct processes, which is why many directors choose to have both handled together by someone who understands how the two fit together.

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 CT600 Tax Return Filing Off Your Desk

If your year end has passed and the Company Tax Return is still sitting on your to-do list, you are not alone — working out taxable profit from accounting profit, remembering which costs can be deducted, and keeping Corporation Tax records in a fit state to support the figures is genuinely time-consuming. Micro Entity Accounts can help with CT600 preparation, the Corporation Tax computation, a review of the tax adjustments behind your figures, and submission of the return to HMRC, so the reporting side of your year end is handled properly and on time. Get in touch to talk through your company’s position and find out how we can support your CT600 Tax Return Filing.

─── 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 exactly is a CT600?

A CT600 is the form HMRC uses for a Company Tax Return. It sets out the company's Corporation Tax position for an accounting period, including the figures from the Corporation Tax computation, the resulting taxable profit, and the tax due or repayable. It is submitted to HMRC rather than to Companies House, and it applies to companies generally — there is no separate version reserved for micro-entities.

Is a CT600 the same thing as statutory accounts?

No, they are two different documents with two different audiences. Statutory accounts are the annual accounts a company files with Companies House under the Companies Act requirements that apply to it. A CT600 is the Company Tax Return filed with HMRC. The two are linked because the accounts usually provide the starting figures for the tax computation, but filing one does not satisfy the obligation to file the other, and the formats and disclosure requirements are not the same.

Does my company need to file a CT600?

Whether a return is required depends on your company's circumstances and on notices issued by HMRC. Most active limited companies with a Corporation Tax liability need to submit a Company Tax Return, and HMRC may require a return even where no tax ends up being payable. Dormant or non-trading companies may have different obligations. Because the position varies, it is worth checking your company's specific situation rather than assuming either that a return is always needed or that it never is.

Is a CT600 different from a Corporation Tax computation?

Yes. The Corporation Tax computation is the working paper that starts with your accounting profit, makes the necessary tax adjustments — such as adding back disallowable expenses or replacing depreciation with capital allowances — and arrives at the taxable profit and the tax charge. The CT600 is the return that reports the outcome of that computation to HMRC. The computation supports the return; it is not the same document.

Why is taxable profit different from the profit in my accounts?

Tax rules and accounting rules do not treat every item the same way. Some costs that reduce accounting profit are not deductible for tax, certain income may be treated differently for tax, and capital expenditure is generally dealt with through capital allowances rather than depreciation. There can also be timing differences that shift when an item affects taxable profit. Adjusting for these items is what turns accounting profit into taxable profit, and the result may be higher or lower than the figure in the accounts.

Can a micro-entity company file its CT600 without filing accounts?

The CT600 is a tax filing and the accounts are a separate company filing, so the two obligations stand independently. A company that qualifies as a micro-entity may prepare simpler accounts, but where HMRC requires a Company Tax Return it still needs to be submitted, and the figures behind it need to be supported by proper accounting records. You can have the accounts prepared and the CT600 filed as part of the same piece of work, but they are not the same filing.

What information do you need to prepare a CT600?

Typically we would look for the company's accounting records or draft accounts for the period, details of income and expenditure, information on any fixed asset purchases or disposals, notes on items such as director's loans or expenses that may need adjustment, and the accounting period start and end dates. Anything you have from HMRC relating to the company, such as a notice to deliver a return, is also useful. The more complete the records, the smoother the CT600 Tax Return Filing process tends to be.

Does filing a CT600 also pay the Corporation Tax?

No. Submitting the Company Tax Return and paying any Corporation Tax due are separate obligations, with separate dates attached to them. The return reports the liability; the payment settles it. It is possible to have filed on time and still owe tax, or to have no tax to pay and still be required to file. Best practice is to treat the filing and the payment as two items on your year-end checklist and diarise both.