─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Ipswich: Prepare and File Your Company Tax Return with HMRC

Professional CT600 Tax Return Filing in Ipswich helps your company pull together its Corporation Tax position and submit a Company Tax Return to HMRC with confidence. We work through your accounts and records, identify the tax adjustments that may be needed to arrive at taxable profit, and prepare the CT600 for submission. It is important to be clear that a CT600 is not the same as the statutory accounts your company files with Companies House, and it is not a Confirmation Statement, a VAT Return or a Self Assessment return — it is the specific Corporation Tax return submitted to HMRC. With clear, transparent pricing and a straightforward process, you get accuracy, clarity and the convenience of letting an experienced team handle the detail while you get on with running the business in Ipswich.

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 the CT600 for a Micro-Entity Company?

There is no separate official “micro-entity CT600” form — the CT600 is the same Company Tax Return used by companies generally, and it is submitted to HMRC to report a company’s Corporation Tax position. A company that meets the micro-entity criteria is simply a smaller company for accounts purposes; if it is within the scope of Corporation Tax and has been asked to file, it will still need to complete and submit a Company Tax Return in the normal way. The CT600 is separate from the statutory accounts that are filed with Companies House, although those accounts and the underlying accounting records often provide the starting point for the Corporation Tax calculation. That calculation is not automatic: taxable profit can differ from accounting profit because adjustments may be required — for example, for disallowable expenditure, capital allowances or other tax-specific treatments. That is also why filing a CT600 is not the same as paying Corporation Tax, and whether any Corporation Tax is actually payable depends on the company’s own circumstances and taxable position. Choosing a simpler accounting framework such as FRS 105 affects how the accounts are prepared, but it does not by itself determine the company’s Corporation Tax liability.

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 Admin Out of Your CT600 Tax Return Filing in Ipswich

Preparing a Company Tax Return can quickly become complicated: accounting profit has to be reviewed, potential tax adjustments identified, records kept organised, and the CT600 submitted to HMRC on time. Micro Entity Accounts can take that workload off your desk, handling CT600 preparation, the Corporation Tax computation, a review of tax adjustments, and the HMRC filing so that your return reflects your company’s position clearly and consistently with the accounts you have prepared. If you would rather not spend your evenings cross-referencing ledgers and tax rules, get in touch with our Ipswich team and let us handle your CT600 Tax Return Filing from start to finish.

─── 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 form used to submit a Company Tax Return to HMRC. It sets out the company's details, the period the return covers, and the figures that support its Corporation Tax position, including the taxable profit figure and the resulting Corporation Tax liability (or the reason none arises). It is a tax return, not a set of accounts, and it is submitted to HMRC rather than to Companies House. In most cases the CT600 is filed electronically, and supporting computations and accounts are submitted alongside it.

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

Yes — they are two separate filing obligations with two different recipients. Statutory accounts are prepared under an accounting framework and filed at Companies House, where they become part of the public record. The CT600 is the Company Tax Return submitted to HMRC for Corporation Tax purposes. The two are related, because the figures in your accounts usually form the starting point for the tax calculation, but they are not the same document and filing one does not satisfy the other. A company generally needs to consider both, along with its Confirmation Statement and any VAT Returns that apply to it.

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

Possibly, but it depends on the company's circumstances. Being a micro-entity is an accounting classification based on size thresholds for accounts purposes — it does not switch Corporation Tax obligations on or off, and it does not create a special version of the CT600. Whether a return is required can depend on factors such as whether the company has received a notice to file from HMRC, whether it is dormant, and whether any exemption applies to it. If a return is required, the company needs to submit a Company Tax Return even if no Corporation Tax ends up being payable.

Is a CT600 different from a Corporation Tax computation?

Yes, and the two work together rather than replacing each other. The Corporation Tax computation is the working paper that starts with your accounting profit, applies the tax adjustments needed for Corporation Tax purposes, and arrives at the taxable profit and the tax due. The CT600 is the return form on which those results are reported to HMRC. In practice you prepare the computation first, then enter the resulting figures into the CT600 and submit both. That is why a CT600 cannot simply be copied from the accounts without some tax analysis in between.

How is taxable profit calculated from accounting profit?

The starting point is normally the profit shown in your accounts. From there, adjustments may be required to reach taxable profit: expenditure that is not allowable for tax purposes may be added back, income that is treated differently for tax may be adjusted, and reliefs or allowances such as capital allowances may be deducted. The exact adjustments depend entirely on the company's transactions and circumstances, which is why accounting profit and taxable profit often differ. Because the adjustments vary from company to company, a review of the ledgers and records is usually needed before the CT600 figures can be finalised.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing is the reporting step — you tell HMRC what the company's position is by submitting the Company Tax Return. Payment is a separate obligation, with its own timeline, and it can fall due before or after the return is filed depending on the company's circumstances. Submitting a CT600 showing a liability does not settle it, and paying an amount does not remove the need to file. Keeping the two clearly separated in your records helps avoid confusion, particularly where a company's taxable position changes during the year.

What information do I need to prepare a CT600?

In broad terms you will need the company's accounting records and either the final accounts or a trial balance for the period, details of fixed asset purchases and disposals, information on any income treated differently for tax, and records of expenses that may need to be added back, such as certain entertaining or non-business costs. Company details, the accounting period dates, and any previous returns or losses carried forward are also relevant. If you are unsure what applies to your company, we can work through it with you and confirm what is needed before preparation begins.

What happens if a company files its CT600 late?

Filing after the due date can lead to HMRC penalties and interest, and the position generally worsens the longer a return remains outstanding. The exact consequences depend on the company's circumstances and HMRC's own rules, so we would not treat any outcome as fixed. The practical point is that late filing is avoidable in most cases by working to a clear schedule. If you are already behind, or you are unsure whether a return was required, it is worth getting advice promptly rather than waiting.